pocket/grammer vs Un Bien
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
pocket/grammer
Leverage the power of local AI on your iPhone to generate code, websites, and apps. This tool allows for agentic coding, creating files and folders, and previewing your work before deployment. It offers a private and secure coding experience without relying on cloud servers.
- Local AI code generation
- Website and app creation
- Agentic coding with file creation
- Project import and export
- Code preview
- Model selection from Hugging Face
- Private and secure on-device operation
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Your phone is now a full coding environment. pocket/grammer runs AI coding agents with open models that live entirely on your device — no account, no cloud required — and shows you what it built in a live preview, right on your screen. AN AGENT THAT PLANS, THEN CODES - Ask for a feature in plain language. pocket/grammer asks clarifying questions, then writes a step-by-step plan you can review before a single line changes. Hand the plan to code mode and watch each step execute — with history for every file it touches. REAL MODELS, REALLY ON-DEVICE - Download open models sized to your device — Qwen 2.5 Coder, Qwen 2.5 Instruct, Qwen 3, and SmolLM2 — and run them entirely offline. Your code never leaves your phone unless you tell it to. A REAL WORKSPACE - Multi-tab code editor with syntax highlighting and autocomplete • Diagnostics that catch syntax errors and unbalanced brackets as you type • Regex-powered search across every file in the project • A file tree you can drag to rearrange, with rename, copy, and delete • File history: step back to any earlier version of any file LIVE PREVIEW - Run web projects instantly in the built-in preview. Switch between fit, mobile, and tablet viewports, and watch console output and errors in a dedicated panel — the preview reloads automatically as the agent writes code. GITHUB IN, CODE OUT - Browse a GitHub repository and import its files into any workspace, then let the agent build on them. BRING YOUR OWN KEY - Prefer frontier models? Add your own API keys for OpenAI, Anthropic, Google Gemini, OpenRouter, or a custom OpenAI-compatible endpoint (LiteLLM works great). Keys are stored securely on your device, and you choose which role — planning or coding — uses cloud versus local. YOUR DESKTOP, PAIRED TO YOUR PHONE - Open your workspace in any browser on the same network and keep using the IDE you love — VS Code, Cursor, or any of them — with your phone doing the AI work. One-time purchase, unlimited devices on your Apple ID. FREE TO START, YOURS FOREVER - Every mobile feature is free. Desktop Access begins with a 7-day free trial, then unlocks with a single $19.99 purchase — never a subscription. PRIVACY FIRST - No account required. On-device models work in airplane mode, and cloud providers are only called when you choose them.
Un Bien
A native client for the Pi coding agent, allowing users to connect to their own machines. It provides live transcripts, inline images, and interactive prompts for clarifications. The app is self-hosted with no cloud, account, or telemetry.
- Live transcripts with styled edit diffs
- Inline images and thinking blocks
- Plan & subagent panels
- Interactive prompt for clarifications
- Launch new sessions on paired machines
- Self-hosted design with no cloud or telemetry
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Un Bien is a native client for the Pi coding agent (http://pi.dev). Pair your phone with your own machines over a relay you host, then attach to running agent sessions: live transcripts with styled edit diffs and tool results, inline images, thinking blocks, plan & subagent panels — and an interactive prompt for ask-style clarifications. Steer mid-turn or queue follow-ups; launch new sessions on paired machines (opt-in, machine-side). Self-hosted by design: there is no Un Bien cloud, no account, and no telemetry — your relay, your keys, your machines. Includes a read-only demo mode so you can look around without any setup. Get started (self-hosting in ~5 minutes): https://docs.georgeharker.com/un-bien/main/docs/install.html App guide: https://docs.georgeharker.com/un-bien/main/docs/app-guide.html
Screenshots
Verdict
The clearest difference is in-app purchases: Un Bien at none against pocket/grammer's 1. Un Bien also leads on update cadence (weekly vs every 3 weeks). pocket/grammer's advantage is iOS requirement (15.5 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. pocket/grammer sells 1 one-off in-app purchase. Un Bien asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for pocket/grammer against 5.0 for Un Bien. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
pocket/grammer ships an update every 3 weeks, Un Bien weekly. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.
| Parameter | pocket/grammer | Un Bien |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 80 MB | 7 MB |
| Age rating | 17+ | 4+ |
| Developer | CHRISTOPHER MICHAEL STAATS | George Harker |
Customer experience
pocket/grammer
Un Bien
In-app purchases
pocket/grammer
- Desktop Client Unlock$19.99
Un Bien
No in-app purchases









