PsyPad vs Hiru
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PsyPad
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PsyPad is an open source platform for facilitating visual psychophysics experiments on an iPad. Using customisable staircases or MOCS, the researcher can control presentation of any stimuli that can be precomputed as PNG image files, including movies. Features include participant accounts, up to 4 response buttons, comprehensive log files, and remote test configuration using the PsyPad server. A demo mode with access to a public gallery of tests also makes PsyPad useful for teaching. The project is open source, with repositories for the application code and example server code. https://github.com/davidlawson/PsyPad https://github.com/davidlawson/PsyPad-Server
Hiru
This utility app calibrates eye-tracking hardware for an optimal experience. It guides users through setup, allows customization of pointer sensitivity and dwell time, and ensures accurate eye tracking for various uses. Regular updates are provided to enhance performance and accuracy.
- Eye tracking calibration
- Positioning guide
- Pointer sensitivity customization
- Dwell time adjustment
- Accuracy enhancement
- Software updates
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Welcome to your Hiru app! Hiru App is a calibration application that provides you the best eye tracking experience when you are using your Hiru by IRISBOND. The calibration teaches the Hiru how to track your eyes. Perform a calibration at the beginning of an eye gaze session, when changing between devices or if you feel you need more accuracy. Thanks to Hiru app, you can: → Have access to a positioning guide for a better calibration. → Calibrate the Hiru. → Customize the sensitivity of the pointer. → Change the Hiru app dwell time. → You can use the calibration for a better accuracy. → Update your Hiru whenever there is a new release available. → You can now understand if your eyes are being tracked without any effort and re-calibrate faster in case you might need it. Hiru app is available in English, German and Spanish. This app works for iOS version 15 or above.
Verdict
The clearest difference is update cadence: Hiru at every 5 weeks against PsyPad's every 4 months. PsyPad's advantage is iOS requirement (13.5 vs 15.7). 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.
PsyPad ships an update every 4 months, Hiru every 5 weeks. The most recent releases landed on June 7, 2026 and September 10, 2026 respectively.
| Parameter | PsyPad | Hiru |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPad | iPad |
| Requires iOS | 13.5 — better | 15.7 |
| Further details — not scored | ||
| Size | 4 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Turpin | IRISBOND CROWDBONDING SL |
In-app purchases
PsyPad
No in-app purchases
Hiru
No in-app purchases









