PsyPad vs StimuliApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PsyPad
Read full descriptionHide full description
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
StimuliApp
Create precise psychophysical tests on iOS devices without programming. Assess perceptual capabilities using various stimuli like images, sounds, and videos with synchronized visual and auditory output. Features include real-time preview and automatic report generation.
- Precise timing with Metal framework
- 60 or 120 Hz test options
- Synchronized visual and auditory stimulation
- Interactive stimulus creation with preview
- Automatic report generation
- Gamma-correction features
Read full descriptionHide full description
StimuliApp is an app designed to create psychophysical tests with precise timing on iOS devices (iPad and iPhone). Psychophysical tests are tests to assess perceptual capabilities. With a simple system of menus, different types of tests including the most common stimuli (gabors, random dots, images, sounds and videos among others) can be created. Programming skills are not necessary. Features: - Precise timing (frames are not dropped) thanks to the use of the native framework Metal, which provides a direct access to the GPU of the iOS device. - Option to run tests at 60 or 120 Hz depending on the model of the device. - Visual and auditory stimulation are synchronized. - Interactive creation of stimuli using real-time preview. - Possibility of using different spatial and time units. - Gamma-correction features. - Automatic report generation.
Screenshots
Verdict
The clearest difference is update cadence: StimuliApp at every 6 weeks against PsyPad's every 4 months. StimuliApp also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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, StimuliApp every 6 weeks. The most recent releases landed on June 7, 2026 and September 9, 2026 respectively.
| Parameter | PsyPad | StimuliApp |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Turpin | Rafael Marin Campos |
In-app purchases
PsyPad
No in-app purchases
StimuliApp
No in-app purchases
