You run your agents from your phone. Review the last mile there too.

Nit is a native iOS app for reviewing GitHub pull requests: a proper diff, an AI walkthrough, and Ask AI on any hunk. Comment, approve, merge. No laptop.

  • bring your own key
  • no telemetry
  • iPhone only
Join the TestFlight beta Requires iOS 26 and the TestFlight app.
A syntax-highlighted diff in Nit with three lines selected and Ask AI in the floating bar

What it does

Open a PR from anywhere

Paste a GitHub URL, send a link to Nit through the iOS share sheet, or pick a PR from your inbox of requested reviews. Recently opened PRs stay cached, so they open offline too.

Nit's home screen with a URL field and an inbox of recent pull requests

Walkthrough

Generate an AI-narrated tour of the PR before you read a line: what changed, why it matters, and which stops deserve a close look, in reading order.

A generated walkthrough in Nit: a PR summary, then stop 1 of 7 marked critical with its narrated explanation above the diff

Ask AI

Long-press to select lines or a whole hunk, then ask your own model about exactly that code. Presets like What could break? and Security review are one tap, follow-ups keep the thread, and any answer becomes a review comment.

An Ask AI thread in Nit explaining what a selected change does and why it was made

Comment, drop a review, merge.

Line comments batch into one pending review. Submit it as a comment, an approval, or a request for changes, then merge with a merge commit, squash, or rebase. Nit only shows write actions when your token has write access.

Nit's submit review sheet with Comment, Approve, and Request changes
Nit's merge sheet with the squash and merge method selected

Bring your own AI

  • API keys

    Anthropic, OpenAI, and OpenRouter. Pick any model the provider offers, including OpenRouter's batch models for cheaper walkthroughs.

  • ChatGPT subscription

    Sign in with the ChatGPT account you already pay for. No API key needed.

  • Only what you select

    Nit sends the selected lines plus surrounding file context, fitted to a token cap, and shows the token counts on every answer.

See the FAQ for more.

Private by design

  • No tracking, no telemetry

    No analytics, crash reporting, or third-party SDKs. There is no Nit server and no account.

  • Keys live in the Keychain

    Tokens and API keys go into the iOS Keychain the moment you enter them, are never logged, and leave the device only in requests to the service they belong to.

  • Device to provider, over TLS

    Requests go from your phone straight to GitHub and to the AI provider you configured. Nothing in between.

See the privacy policy for full details.

Try the beta

Nit is a passion project by one developer.

Join the TestFlight beta Requires iOS 26 and the TestFlight app.