HAP Studio vs Pi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HAP Studio
Design and learn about haptics with an intuitive visual editor or AI. Generate custom haptic feedback for apps and export in various formats. Access a library of pre-made haptics and educational content.
- Visual haptic editor
- AI-generated haptics
- Lottie JSON import
- Real-time preview
- Swift, AHAP, JSON export
- Haptic library
- Educational content
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HAP is a design tool for creating and learning haptics. Create high-quality haptics using an intuitive visual editor or AI—no coding required. ■ Create Haptics Fine-tune intensity, sharpness, and timing with an intuitive visual editor while previewing your haptics in real time. * Fine-tune haptics with a visual editor * Generate haptics from natural language using AI * Generate haptics from Lottie JSON * Preview haptics in real time Export your haptics as **Swift, AHAP, or JSON** and easily integrate them into your app. ■ Use Haptics Access a library of 30 ready-to-use haptics available as a one-time purchase. Use them for buttons, notifications, success and error feedback, and many other common interactions. ■ Learn Haptics Learn the fundamentals of haptic design with educational content covering accessibility, best practices, and common mistakes. ■ Contact & Social Email: hapstudioapp@gmail.com X: https://x.com/HapStudioApp ■ Support Privacy Policy: https://hapstudio.design/en/privacy/ Terms of Service : https://hapstudio.design/en/terms/ EULA:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Contact: hapstudioapp@gmail.com --- This app is primarily designed and optimized for use on iPhone. Haptic feedback is not available on iPad. To experience the app as intended, we recommend using it on an iPhone.
Pi
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pi is a coding agent that runs on your iPhone and iPad. Ask it for something and it gets to work: it writes and runs code in a real shell and Python, uses git, browses the web, and builds apps for you, right on the device. WHAT IT DOES • Runs commands in a POSIX shell with curl, git and the usual Unix tools • Writes and runs Python, and installs pure-Python packages with pip • Clones repositories, edits files, and commits and pushes with your GitHub account • Browses the web in its own browser, and fills in forms for you • Builds apps: extensions with their own pages, kept in the session's dock • Charts data, reads the photos and files you attach, and takes dictation • Keeps working in the background, and picks up where it left off YOUR MODELS Use the AI provider you already have (sign in, or add an API key), or connect pi to any OpenAI-compatible server, such as Ollama on your Mac. Small models can run entirely on the device. EXTENSIONS AND SKILLS pi uses the pi coding agent's extensions and skills. Install them from GitHub, npm or a file, or ask the agent to write one. You can read and change every extension's code in Settings, and pi asks before any extension uses the camera, the microphone or your location. PRIVATE BY DESIGN pi has no account and collects nothing. Your sessions stay on your device, and your sign-ins and settings can follow you through your iCloud Keychain. What a session sends goes only to the model provider and the sites you choose. Card and document numbers wait in a vault behind Face ID. ALSO MCP servers, Shortcuts ("Ask pi"), sessions you can share as a file, and remote Linux machines through Crabbox. pi needs an account with an AI provider, your own model server, or a model downloaded to the device.
Screenshots
Verdict
The clearest difference is review sentiment: HAP Studio at 100% against Pi's 0%. Pi's advantage is update cadence (daily vs weekly). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
HAP Studio ships an update weekly, Pi daily. Both last shipped on October 31, 2026.
| Parameter | HAP Studio | Pi |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 26.0 | 26.0 |
| Further details — not scored | ||
| Size | 22 MB | 163 MB |
| Age rating | 4+ | 17+ |
| Developer | YUI ATARASHI | Reindeer AI Inc |
Customer experience
HAP Studio
Pi
In-app purchases
HAP Studio
No in-app purchases
Pi
No in-app purchases









