On-device AI autocomplete · macOS

Write faster everywhere on your Mac.
Nothing ever leaves your machine.

Shadowtype predicts your next words as faint ghost text — right at the caret, in any text field. It runs a local LLM on Apple Silicon, so it works offline, needs no account, and your keystrokes never touch the cloud. Press Tab to accept.

  • 100% on-device
  • Works offline
  • No account
  • One-time purchase
Keystrokes stay on-device
<150 ms on M2
Keystrokes never leave the device Sub-frame ghost text at the caret Zero telemetry, zero analytics Works in Mail, Slack, Notes, Safari…
How it works

Three keystrokes from thought to sentence

No new window, no command palette, no copy-paste. Shadowtype lives in the caret of whatever you're already typing in.

Type anywhere

Mail, Slack, Notes, your code editor, a browser field — if there's a cursor, Shadowtype is watching the local context, not the network.

Hey team, just shipped the

See the ghost text

A local model predicts your next words and renders them faint, inline, at the caret — like spell-check, invisible until it's useful.

Hey team, just shipped the fix to staging.

Tab to accept

Tab takes the next word, ⌥Tab takes the whole line. Keep typing to dismiss. It's muscle memory within a day.

Hey team, just shipped the fix to staging.
What it does

A system-wide ghost-text layer for your whole Mac

It behaves like spell-check: invisible until useful, never in the way. Best-in-class capability — matched locally, on your hardware.

100% on-device & offline

Inference runs locally on Apple Silicon with llama.cpp + Metal. No cloud, no account, no network call for completion — ever. Pull the Wi-Fi and it keeps finishing your sentences. Your keystrokes are read on the device and stay there.

llama.cpp + Metal no inference server no telemetry encrypted profile

Inline ghost-text completion

Faint suggestions appear exactly at the caret in every text field. Tab accepts the next word; ⌥Tab takes the whole line.

Per-app & per-domain control

Enable or silence Shadowtype by app bundle or browser domain. Casual in Slack, formal in Mail — set instruction overrides per app.

Personalization that learns you

An on-device style profile biases completions toward your phrasing — stored encrypted, never transmitted, wipeable anytime.

Autocorrect & typo suppression

A fast heuristic holds back a suggestion when you're mid-typo. Pro unlocks full inline autocorrect that fixes transpositions as you go.

Multiple local models

Pick from compact-to-large GGUF models (Gemma 4, Qwen3.5). Lighter and mid-size are free; Pro adds the largest, RAM permitting.

Screen-aware context

Optional local OCR reads the focused window so suggestions fit what's on screen. Pro adds clipboard awareness for sharper completions.

Emoji & multi-language

Type :smi → 😄. English is sharpest, with working support for Norwegian, Hinglish and more — your language, never sent anywhere.

The proof

Turn off the Wi-Fi. Watch it break.
It keeps finishing your sentences.

There is no inference network call, ever. The only outbound traffic is an optional update check, the one-time model download, and licensing (issuing your key plus a lightweight device-activation check). Everything that completes your text happens on your Mac. Try the toggle in the demo above — flip it offline and keep typing.

The honest comparison

Everything Cotypist does — without the subscription

Feature parity is the floor. We win on ownership: one $79 payment instead of recurring billing, zero telemetry, and a generous 5-Mac license.

Capability Shadowtype Cotypist
System-wide inline completionYesYes
On-device LLM (offline, no account)YesYes
Tab-to-accept word / whole lineYesYes
Personalization & per-app instructionsYesYes
Telemetry / analytics backendNoneOptional
Device-count gatingUp to 5 Macs1 → 3 Macs
Pricing model$79 onceSubscription
Founders Edition

The price only goes up. Lock it now.

Pro is a one-time purchase — never a subscription. During the beta it sells on a Founders ladder that rises as seats fill. Whatever tranche is live when you buy is yours forever, even after it hits the $79 launch price.

Tranche 1 · $39 100/100 seats left
Become a Founder — $39 Tranche 1 · 100/100 left
Pricing

Buy it once. Own it forever.

No subscription, ever. One payment unlocks everything on up to 5 of your Macs. A genuinely usable free tier means you can try before you pay.

Founders Tranche 1 · 100/100 left at $39

Shadowtype Pro

Founders Edition — lock the price before it rises. Each tranche sells out and steps up: $39 → $49 → $59 → $79 at launch.
$39 $79

One-time payment · Founders price · yours forever

  • Unlimited completions — no daily word cap
  • Full autocorrect & personalization
  • Clipboard context & per-app instructions
  • Largest models & configurable length
  • Experimental Labs features
  • Founders perks: early access, roadmap vote, priority support
  • Use on up to 5 of your Macs · free updates
Become a Founder — $39
  • Pay once
  • Yours forever
  • No subscription
  • No account
  • Works offline
  • 14-day refund
  • Try the full app free first

Free

Everything you need to try Shadowtype properly — forever.
$0

No account, no card, no expiry

  • Inline ghost-text in every app
  • 100% on-device, offline, no account
  • Tab-to-accept · emoji · typo suppression
  • Screen-aware context · lighter + mid models
  • 100 accepted words / day
Download free

Upgrade to Pro anytime — no reinstall

Founders & early users

Join the people switching off cloud keyboards

Real, local, private — and owned, not rented.

“Finally an autocomplete I can use at work without legal asking where the data goes. Pull the Wi-Fi and it still finishes my sentences.”
— Beta tester (placeholder)
“Set up casual tone in Slack and formal in Mail. Tab-to-accept is muscle memory after a day. No subscription is the whole reason I bought.”
— Beta tester (placeholder)
“On-device LLM that actually keeps the <150 ms feel on my M2. The privacy story sold me; the speed kept me.”
— Beta tester (placeholder)
Questions

Good to know

Does it really work offline?
Yes. All completion happens on your Mac using a local model and Metal — there is no inference network call, ever. The only outbound traffic is the optional update check, the one-time model download, and license issuance (your email + key). Turn off Wi-Fi and Shadowtype keeps completing.
What about my privacy?
Your keystrokes never leave the device. There is no telemetry, no analytics backend, and no account. Password and secure fields are never read. The personalization profile is stored encrypted on your Mac and you can wipe it any time. You keep full copyright of everything you write.
What's free vs. what does Pro unlock?
The free tier is genuinely useful forever: system-wide ghost text, Tab-to-accept, emoji, typo suppression, screen-aware context, and lighter/mid-size models — capped at 100 accepted words per day. Pro removes the cap and unlocks full autocorrect, personalization, clipboard context, custom & per-app instructions, configurable completion length, the largest models, and Labs features.
How is the Founders price structured?
Pro is a single one-time purchase — never a subscription. The permanent price is $79. During the beta it sells on a Founders ladder that rises as seats fill: $39 for the first 100 buyers, then $49, then $59 — whatever tranche is live when you buy locks in for good. The earlier you join, the less you pay and the more you save against the $79 launch price. Tax is handled at checkout by our merchant of record.
Can I get a refund?
Yes — there's a 14-day refund window, no questions asked. You can also use the full app free during the trial before you ever pay, so you'll know if it fits your workflow.
How do I activate after buying?
After checkout you'll land on an activation page with your license key. Click "Activate in Shadowtype" to open the app via deep link, or copy the key into Settings → License and paste it. Pro mode turns on immediately — no restart. Your key also arrives by email.
Which Macs are supported?
macOS 14 (Sonoma) and later, on Apple Silicon (M1 and up). One Pro license covers personal use on up to 5 of your Macs. Moving to a new Mac? Deactivate one in Settings ▸ License, then activate the other.
Have an AppSumo code?
Redeem it on the redemption page to get your Pro license key instantly.
Ready when you are

Try it free. Become a Founder from $39.

Download Shadowtype, accept your first word with Tab, and feel the difference. Lock the Founders price before it rises — upgrade only if it earns its place.

  • Pay once
  • No subscription
  • No account
  • Works offline
  • 14-day refund