PharoSmalltalk vs Grass
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
PharoSmalltalk
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Pharo on iOS brings the complete Pharo 13 Smalltalk programming environment to your Apple devices. Browse classes, write code, inspect objects, and debug โ all running natively with Metal-accelerated graphics. FULL PHARO DESKTOP Run unmodified official Pharo 13 images. The System Browser, Playground, Inspector, Debugger, and every tool you know from desktop Pharo works here. No special images required. BUILT FOR TOUCH Intuitive gesture mapping makes Pharo comfortable on a touchscreen. Tap for left-click, long-press for right-click, two-finger tap for middle-click. Pinch to zoom. Full hardware keyboard support with modifier keys on iPad. NATIVE PERFORMANCE A clean-room interpreter written in C++ with Metal GPU rendering. Smooth 30fps display, efficient memory management, and full foreign function interface support. IMAGE LIBRARY Download official Pharo 13 images directly from the app. Import your own .image files from the Files app. Keep multiple images organized and switch between projects easily. WORKS EVERYWHERE Universal app for iPhone, iPad, and Mac (via Mac Catalyst). Your Pharo environment goes wherever you do. PRIVACY FIRST No accounts, no telemetry, no data collection. Your code stays on your device. Period. OPEN SOURCE The VM is MIT-licensed and open source. Contributions welcome.
Grass
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Meet Grass. Your agents work. You check in. Fire a task. Pocket your phone. Come back to progress. Grass RUNS Tasks on Grass Computer or your own machine - while your laptop is closed, while you're in a meeting, or while you're away from your desk. No terminal to watch. No session to babysit. Grass MOVES Send a coding session to Grass and keep the thread moving on a remote instance โ conversation, context, and all. Your phone buzzes when it's live. Grass ALERTS The moment your agent needs a decision or finishes the job. You don't push for status. Status finds you. Permission needed? Approve from your pocket. Grass CLEARS Every permission prompt from every thread in one tab. Read the diff. Yes or no. Keep multiple threads running in ask-mode without watching all of them. Grass STARTS A new thread in two taps. Quick chat button โ bottom sheet โ task running. No app switching. No losing your place. The idea fires โ the experiment actually runs. Grass SHOWS Which thread is which. Running, completed, waiting โ all visible on the home screen the moment you open the app. Switch machines with one tap. Name them whatever you want. Your harness. Your code. Our compute. Designed for AI coding agent workflows, including supported integrations with Claude Code and OpenCode.
Screenshots
Verdict
The clearest difference is update cadence: PharoSmalltalk at weekly against Grass's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PharoSmalltalk ships an update weekly, Grass every 2 weeks. Both last shipped on October 8, 2026.
| Parameter | PharoSmalltalk | Grass |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly โ better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod, Mac โ better | iPhone, iPad, iPod |
| Requires iOS | 15.0 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 4 MB | 141 MB |
| Age rating | 4+ | 17+ |
| Developer | Aaron Wohl | Anil Dukkipatty |
In-app purchases
PharoSmalltalk
No in-app purchases
Grass
No in-app purchases









