Desktop app

Saanora for Windows

The full Mark experience — answers, research with cited sources, writing, and code — one Alt+Space away from anything you're doing.

Get it fromMicrosoft Store

Free · Verified by Microsoft · Windows 10/11

macOS coming soon

Saanora for Windows

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Q3 board deck — the narrative

Today(4)

Postgres slow query — 40M rows

Why is our Docker build 8 minutes?

Reply to Sarah about the vendor contract

Is cereal a soup?

Yesterday(2)

Kafka consumer groups, explained simply

16-week half marathon plan

Previous 7 days(2)

Counteroffer — how hard can I push?

Sourdough starter won't rise

JJames CarterSpark

Mark1x

Morning — do you have time for a Postgres problem?

Always. Give me the symptom and the table size and we’ll work backwards from there.

It’s the analytics dashboard — the per-tenant timeline widget.

Timeline widgets almost always sort by created_at inside one tenant, which is exactly where this tends to go wrong.

Our orders table hit 40M rows and one dashboard query went from 40ms to 9s.

Thought for 8sclick to expand

Find the bottleneck

Run EXPLAIN (ANALYZE, BUFFERS)first. It’s almost always one of three shapes:

Seq Scan on orders — no usable index, so all 40M rows get read.
Rows Removed by Filter in the thousands — the index is too broad.
Sort with disk in the method — you outgrew work_mem.

The fix that usually holds

A composite index in selectivity order, built without blocking writes:

CREATE INDEX CONCURRENTLY idx_orders_tenant_created
  ON orders (tenant_id, created_at DESC)
  INCLUDE (status, total_cents);

That turns the Seq Scan into an Index Only Scan. Run ANALYZE orders after.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Q3 board deck — the narrative

Today(4)

Postgres slow query — 40M rows

Why is our Docker build 8 minutes?

Reply to Sarah about the vendor contract

Is cereal a soup?

Yesterday(2)

Kafka consumer groups, explained simply

16-week half marathon plan

Previous 7 days(2)

Counteroffer — how hard can I push?

Sourdough starter won't rise

JJames CarterSpark

Mark1x

Morning — do you have time for a Postgres problem?

Always. Give me the symptom and the table size and we’ll work backwards from there.

It’s the analytics dashboard — the per-tenant timeline widget.

Timeline widgets almost always sort by created_at inside one tenant, which is exactly where this tends to go wrong.

Our orders table hit 40M rows and one dashboard query went from 40ms to 9s.

Thought for 8sclick to expand

Find the bottleneck

Run EXPLAIN (ANALYZE, BUFFERS)first. It’s almost always one of three shapes:

Seq Scan on orders — no usable index, so all 40M rows get read.
Rows Removed by Filter in the thousands — the index is too broad.
Sort with disk in the method — you outgrew work_mem.

The fix that usually holds

A composite index in selectivity order, built without blocking writes:

CREATE INDEX CONCURRENTLY idx_orders_tenant_created
  ON orders (tenant_id, created_at DESC)
  INCLUDE (status, total_cents);

That turns the Seq Scan into an Index Only Scan. Run ANALYZE orders after.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Q3 board deck — the narrative

Today(4)

Postgres slow query — 40M rows

Why is our Docker build 8 minutes?

Reply to Sarah about the vendor contract

Is cereal a soup?

Yesterday(2)

Kafka consumer groups, explained simply

16-week half marathon plan

Previous 7 days(2)

Counteroffer — how hard can I push?

Sourdough starter won't rise

JJames CarterSpark

Mark1x

Morning — do you have time for a Postgres problem?

Always. Give me the symptom and the table size and we’ll work backwards from there.

It’s the analytics dashboard — the per-tenant timeline widget.

Timeline widgets almost always sort by created_at inside one tenant, which is exactly where this tends to go wrong.

Our orders table hit 40M rows and one dashboard query went from 40ms to 9s.

Thought for 8sclick to expand

Find the bottleneck

Run EXPLAIN (ANALYZE, BUFFERS)first. It’s almost always one of three shapes:

Seq Scan on orders — no usable index, so all 40M rows get read.
Rows Removed by Filter in the thousands — the index is too broad.
Sort with disk in the method — you outgrew work_mem.

The fix that usually holds

A composite index in selectivity order, built without blocking writes:

CREATE INDEX CONCURRENTLY idx_orders_tenant_created
  ON orders (tenant_id, created_at DESC)
  INCLUDE (status, total_cents);

That turns the Seq Scan into an Index Only Scan. Run ANALYZE orders after.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Q3 board deck — the narrative

Today(4)

Postgres slow query — 40M rows

Why is our Docker build 8 minutes?

Reply to Sarah about the vendor contract

Is cereal a soup?

Yesterday(2)

Kafka consumer groups, explained simply

16-week half marathon plan

Previous 7 days(2)

Counteroffer — how hard can I push?

Sourdough starter won't rise

JJames CarterSpark

Mark1x

Morning — do you have time for a Postgres problem?

Always. Give me the symptom and the table size and we’ll work backwards from there.

It’s the analytics dashboard — the per-tenant timeline widget.

Timeline widgets almost always sort by created_at inside one tenant, which is exactly where this tends to go wrong.

Our orders table hit 40M rows and one dashboard query went from 40ms to 9s.

Thought for 8sclick to expand

Find the bottleneck

Run EXPLAIN (ANALYZE, BUFFERS)first. It’s almost always one of three shapes:

Seq Scan on orders — no usable index, so all 40M rows get read.
Rows Removed by Filter in the thousands — the index is too broad.
Sort with disk in the method — you outgrew work_mem.

The fix that usually holds

A composite index in selectivity order, built without blocking writes:

CREATE INDEX CONCURRENTLY idx_orders_tenant_created
  ON orders (tenant_id, created_at DESC)
  INCLUDE (status, total_cents);

That turns the Seq Scan into an Index Only Scan. Run ANALYZE orders after.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

The shortcut

Alt+Space

Mark, over anything.

No window to find, no tab to hunt for. Press it over your editor, a spreadsheet, a PDF or a game — Mark appears on top, answers, and gets out of the way. Press it again and it's gone.

Alt+SpaceSummon MarkCtrl+KSearch chatsCtrl+NNew chat?Shortcuts sheetCtrl+RReload

What it does

Not a chatbot in a box. A place to think.

01Research

Answers with receipts

Switch on Research and Mark searches the live web before it answers — then shows you every source behind every claim, so you can check the work instead of taking it on faith.

Research

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Energy transition — running notes

Today(3)

Solar's share of global electricity

Grid storage economics in 2025

Draft the LP update

Yesterday(2)

Summarise the IEA outlook for Monday's memo

EU carbon border tariff, in one page

Previous 7 days(3)

Who actually owns the grid?

Nuclear SMR timelines — realistic?

Prep questions for the developer call

SSarah MitchellSpark

Mark1x

I’m writing the energy section of the LP update.

Then anchor it on generation share rather than installed capacity — capacity flatters solar, and your LPs will know it.

How much of the world’s electricity came from solar in 2024?

Research

9 sources cited

Copy

The short answer

Solar supplied about 6.9% of global electricity in 2024 — 2,131 TWh, up from 5.5% — and was the largest source of new generation for the third year running.

How fast it’s moving

Output grew 29% year on year — about 474 TWh of new generation.
China installed 277 GW, over half of everything added worldwide.
Wind and solar together crossed 15% of world electricity.
Installed PV capacity passed 2 TW — the second terawatt took two years.

The IEA expects solar PV to deliver ~80% of renewable capacity growth to 2030.

123Show 9 sources

Message Mark...

Research

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Energy transition — running notes

Today(3)

Solar's share of global electricity

Grid storage economics in 2025

Draft the LP update

Yesterday(2)

Summarise the IEA outlook for Monday's memo

EU carbon border tariff, in one page

Previous 7 days(3)

Who actually owns the grid?

Nuclear SMR timelines — realistic?

Prep questions for the developer call

SSarah MitchellSpark

Mark1x

I’m writing the energy section of the LP update.

Then anchor it on generation share rather than installed capacity — capacity flatters solar, and your LPs will know it.

How much of the world’s electricity came from solar in 2024?

Research

9 sources cited

Copy

The short answer

Solar supplied about 6.9% of global electricity in 2024 — 2,131 TWh, up from 5.5% — and was the largest source of new generation for the third year running.

How fast it’s moving

Output grew 29% year on year — about 474 TWh of new generation.
China installed 277 GW, over half of everything added worldwide.
Wind and solar together crossed 15% of world electricity.
Installed PV capacity passed 2 TW — the second terawatt took two years.

The IEA expects solar PV to deliver ~80% of renewable capacity growth to 2030.

123Show 9 sources

Message Mark...

Research

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Energy transition — running notes

Today(3)

Solar's share of global electricity

Grid storage economics in 2025

Draft the LP update

Yesterday(2)

Summarise the IEA outlook for Monday's memo

EU carbon border tariff, in one page

Previous 7 days(3)

Who actually owns the grid?

Nuclear SMR timelines — realistic?

Prep questions for the developer call

SSarah MitchellSpark

Mark1x

I’m writing the energy section of the LP update.

Then anchor it on generation share rather than installed capacity — capacity flatters solar, and your LPs will know it.

How much of the world’s electricity came from solar in 2024?

Research

9 sources cited

Copy

The short answer

Solar supplied about 6.9% of global electricity in 2024 — 2,131 TWh, up from 5.5% — and was the largest source of new generation for the third year running.

How fast it’s moving

Output grew 29% year on year — about 474 TWh of new generation.
China installed 277 GW, over half of everything added worldwide.
Wind and solar together crossed 15% of world electricity.
Installed PV capacity passed 2 TW — the second terawatt took two years.

The IEA expects solar PV to deliver ~80% of renewable capacity growth to 2030.

123Show 9 sources

Message Mark...

Research

Mark can make mistakes. Verify important info.

02Interactive

See it, don't just read it

Molecules, orbits, functions and diagrams render as real objects inside the conversation. Drag to rotate, hover to label, change a parameter and watch it respond.

Interactive

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Orbital mechanics problem set

Today(3)

Inner solar system, to scale

Explain eigenvectors like I'm 12

Cheap eats near campus

Yesterday(3)

Lab report — measuring g with a pendulum

Why is the sky red at sunset?

Build me a DNA double helix

Previous 7 days(2)

Study plan for finals week

Is a double major actually worth it?

EEmma WalshLite

Mark1x

Why do the outer planets take so much longer to orbit?

Kepler’s third law: orbital period grows with the 3/2 power of the radius, so distance costs time faster than it costs space.

Show me the inner solar system with the orbits actually to scale.

Orbital radii are true to scale; the bodies are enlarged ~2,000× or Mercury would be a single pixel.

Inner solar system — orbits to scale

hover to label · drag to orbit · Ctrl+scroll to zoomSave

Mercury sits at 0.39 AU, Earth at 1.0, Mars at 1.52 — the gaps widen fast, which is why a Mars transfer window only opens every 26 months.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Orbital mechanics problem set

Today(3)

Inner solar system, to scale

Explain eigenvectors like I'm 12

Cheap eats near campus

Yesterday(3)

Lab report — measuring g with a pendulum

Why is the sky red at sunset?

Build me a DNA double helix

Previous 7 days(2)

Study plan for finals week

Is a double major actually worth it?

EEmma WalshLite

Mark1x

Why do the outer planets take so much longer to orbit?

Kepler’s third law: orbital period grows with the 3/2 power of the radius, so distance costs time faster than it costs space.

Show me the inner solar system with the orbits actually to scale.

Orbital radii are true to scale; the bodies are enlarged ~2,000× or Mercury would be a single pixel.

Inner solar system — orbits to scale

hover to label · drag to orbit · Ctrl+scroll to zoomSave

Mercury sits at 0.39 AU, Earth at 1.0, Mars at 1.52 — the gaps widen fast, which is why a Mars transfer window only opens every 26 months.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Orbital mechanics problem set

Today(3)

Inner solar system, to scale

Explain eigenvectors like I'm 12

Cheap eats near campus

Yesterday(3)

Lab report — measuring g with a pendulum

Why is the sky red at sunset?

Build me a DNA double helix

Previous 7 days(2)

Study plan for finals week

Is a double major actually worth it?

EEmma WalshLite

Mark1x

Why do the outer planets take so much longer to orbit?

Kepler’s third law: orbital period grows with the 3/2 power of the radius, so distance costs time faster than it costs space.

Show me the inner solar system with the orbits actually to scale.

Orbital radii are true to scale; the bodies are enlarged ~2,000× or Mercury would be a single pixel.

Inner solar system — orbits to scale

hover to label · drag to orbit · Ctrl+scroll to zoomSave

Mercury sits at 0.39 AU, Earth at 1.0, Mars at 1.52 — the gaps widen fast, which is why a Mars transfer window only opens every 26 months.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

03Code

Built for real work

Typed, syntax-highlighted code in 20+ languages — with the reasoning behind the approach, not just the snippet. Copy it out, or keep asking until it fits your codebase.

Code

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Portfolio site — build log

Today(3)

Debounced search hook, in TypeScript

Center a div — the honest answer

CSS grid vs flexbox, when?

Yesterday(2)

Regex for parsing prices — explain it back

Dark mode without the flash

Previous 7 days(2)

Figma tokens → Tailwind config script

Why is my useEffect running twice?

LLauren BennettSpark

Mark1x

Write me a React hook that debounces a search input — TypeScript, no libraries.

Here’s a small, typed useDebouncedValue — it works for any value, not just strings, and cleans up after itself:

export function useDebouncedValue<T>(value: T, delay = 300) {
  const [debounced, setDebounced] = useState(value);

  useEffect(() => {
    // Reset the timer on every change — only the last value lands.
    const t = setTimeout(() => setDebounced(value), delay);
    return () => clearTimeout(t);
  }, [value, delay]);

  return debounced;
}

Using it

Search-as-you-type — useDebouncedValue(query, 300), then fetch on the debounced value, not the raw one.
Generic on purpose — debounce filters, sliders, or a whole form object the same way.

Want the fetch side too? I can add an AbortController so stale requests cancel themselves.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Portfolio site — build log

Today(3)

Debounced search hook, in TypeScript

Center a div — the honest answer

CSS grid vs flexbox, when?

Yesterday(2)

Regex for parsing prices — explain it back

Dark mode without the flash

Previous 7 days(2)

Figma tokens → Tailwind config script

Why is my useEffect running twice?

LLauren BennettSpark

Mark1x

Write me a React hook that debounces a search input — TypeScript, no libraries.

Here’s a small, typed useDebouncedValue — it works for any value, not just strings, and cleans up after itself:

export function useDebouncedValue<T>(value: T, delay = 300) {
  const [debounced, setDebounced] = useState(value);

  useEffect(() => {
    // Reset the timer on every change — only the last value lands.
    const t = setTimeout(() => setDebounced(value), delay);
    return () => clearTimeout(t);
  }, [value, delay]);

  return debounced;
}

Using it

Search-as-you-type — useDebouncedValue(query, 300), then fetch on the debounced value, not the raw one.
Generic on purpose — debounce filters, sliders, or a whole form object the same way.

Want the fetch side too? I can add an AbortController so stale requests cancel themselves.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Saanora

New chatCtrl N

Search chatsCtrl K

Pinned(1)

Portfolio site — build log

Today(3)

Debounced search hook, in TypeScript

Center a div — the honest answer

CSS grid vs flexbox, when?

Yesterday(2)

Regex for parsing prices — explain it back

Dark mode without the flash

Previous 7 days(2)

Figma tokens → Tailwind config script

Why is my useEffect running twice?

LLauren BennettSpark

Mark1x

Write me a React hook that debounces a search input — TypeScript, no libraries.

Here’s a small, typed useDebouncedValue — it works for any value, not just strings, and cleans up after itself:

export function useDebouncedValue<T>(value: T, delay = 300) {
  const [debounced, setDebounced] = useState(value);

  useEffect(() => {
    // Reset the timer on every change — only the last value lands.
    const t = setTimeout(() => setDebounced(value), delay);
    return () => clearTimeout(t);
  }, [value, delay]);

  return debounced;
}

Using it

Search-as-you-type — useDebouncedValue(query, 300), then fetch on the debounced value, not the raw one.
Generic on purpose — debounce filters, sliders, or a whole form object the same way.

Want the fetch side too? I can add an AbortController so stale requests cancel themselves.

Message Mark...

Auto

Mark can make mistakes. Verify important info.

Built for the desktop

Everything Mark does,
closer to your keyboard.

Temporary chats

Flip on incognito and a ghost keeps you company — the conversation is never saved and never synced. Close it and it's gone.

Cross-device sync

Chats and settings stay in step across web, desktop, and mobile. Start a thought at your desk, pick it up anywhere.

Tray + Alt+Space

Saanora lives quietly in your system tray. Press Alt+Space and Mark appears over whatever you're doing — no window hunting.

Reply notifications

Ask something long-running, go do other work. A native notification with a soft chime tells you the moment Mark replies.

Interactive answers

3D scenes, charts, diagrams, quizzes, flashcards, live simulations — plus generated PDF, Word, Excel, and PowerPoint files that save straight to Downloads.

Auto-updates

The app keeps itself current in the background. Install once from the Store and new features arrive on their own.

Getting started

Set up in 3 steps.

Install from the Store

Open the Microsoft Store listing, hit Install, and Windows takes it from there — signed, verified, and kept up to date automatically.

Sign in

Choose Continue with Google — your browser opens, you approve, and the app signs itself in. Email and password work too.

Ask anything

Press Alt+Space and Mark appears from anywhere — over your editor, your browser, your slides. That's it.

Questions

Before you install.

Is Saanora's model open source?

Part of it is, and we would rather be precise than flattering. We trained and published Mark 1x-9B — a nine-billion-parameter open-weights model built on Qwen3.5-9B. The weights, the benchmark protocol and every raw output are public on Hugging Face and ModelScope, and it is small enough to run on a laptop. The assistant in this app, Mark 1x, runs on capable third-party models; Mark 1x-9B is a separate model we released for anyone to use.

Is it really free?

Yes. The desktop app is free and there is no trial timer. Free includes Research too; Lite and Spark raise every limit. Everything you see on this page works on the free tier.

Will Windows warn me when I install it?

No. It ships through the Microsoft Store, so the build is Microsoft-signed and verified — you won't see a SmartScreen prompt or an unknown-publisher warning.

Does it work offline?

The app opens offline, but answers need a connection — Mark runs in the cloud, not on your machine. Your chat history is cached locally so you can still read past conversations.

Do my chats sync with the web and phone?

Yes, automatically. Sign in with the same account and your chats, settings and thinking mode stay in step. Temporary chats are the deliberate exception — they never leave the device.

Is macOS coming?

It's in progress. The app is built on the same codebase as the Windows version, so the wait is about packaging and notarisation rather than rewriting the product.

One Alt+Space away.

Free to install, signed by Microsoft, and it keeps itself up to date.

Get it fromMicrosoft Store

Free · Verified by Microsoft · Windows 10/11

WindowsAndroid

Saanora for Windows

Mark, over anything.

Not a chatbot in a box. A place to think.

Answers with receipts

See it, don't just read it

Built for real work

Everything Mark does,closer to your keyboard.

Temporary chats

Cross-device sync

Tray + Alt+Space

Reply notifications

Interactive answers

Auto-updates

Set up in 3 steps.

Install from the Store

Sign in

Ask anything

Before you install.

One Alt+Space away.

Everything Mark does,
closer to your keyboard.