# ForM - Foundation Model Labs — on-device prompt lab

> on-device prompt lab (iPhone/iPad app by Caio Agra Lemos.)

- Source: https://appshunter.io/ios/app/form-foundation-model-labs/id6759265802 (this page in markdown: same URL + `.md`)
- Developer: [Caio Agra Lemos](https://appshunter.io/developer/1749628522)
- Category: Utilities, Developer Tools
- Price: Free
- Age rating: 12+
- Requires: iOS 26.0 · 5 MB
- Languages: Italian, Brazilian Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2026-02-26
- Data updated: 2026-09-29
- User reviews in markdown: https://appshunter.io/ios/app/form-foundation-model-labs/id6759265802/reviews.md

## What is ForM?

Apple's on-device models don't come with a way to test prompts directly. ForM gives you that: a chat interface connected to Foundation Models where you can try things out before bringing them into your app.

  - System instructions editor
  - Temperature and sampling controls
  - Streaming responses
  - Thinking time and token count per response
  - Multiple chat sessions
  - Stop and regenerate
  - Runs fully on-device. No API keys or accounts

    Requires iPadOS 26 with an A17 Pro chip or later.


## Version history (last 1 release)

### 1.0 — 2026-02-26

No release notes.

## More apps by Caio Agra Lemos

- [Mark - your reading companion](https://appshunter.io/ios/app/mark-your-reading-companion/id6503630930)
- [Potoca](https://appshunter.io/ios/app/potoca/id6505134149)
- [Tabooada](https://appshunter.io/ios/app/tabooada/id6517358963)
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- [rtn - chase ur dreams](https://appshunter.io/ios/app/rtn-chase-ur-dreams/id6604054997)
- [Climate Stories](https://appshunter.io/ios/app/climate-stories/id6740637921)

All apps by Caio Agra Lemos: https://appshunter.io/developer/1749628522

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-29.*