# StimuliApp — Mobile psychophysics

> Mobile psychophysics app for creating perceptual tests with precise timing. (iPhone/iPad app by Rafael Marin Campos.)

- Source: https://appshunter.io/ios/app/stimuliapp/id1497026540 (this page in markdown: same URL + `.md`)
- Developer: [Rafael Marin Campos](https://appshunter.io/developer/1497026539)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 10 MB
- Languages: American English
- Released: 2020-02-02
- Data updated: 2026-06-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/stimuliapp/id1497026540/reviews.md

## What is StimuliApp?

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.

## Key features

- 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


## Frequently asked questions about StimuliApp

### What is StimuliApp used for?

StimuliApp is designed to create psychophysical tests on iOS devices. These tests are used to assess perceptual capabilities by presenting various stimuli like images, sounds, and videos with precise timing.

### Does StimuliApp require programming skills?

No, StimuliApp does not require programming skills. It features a simple menu system for creating different types of tests and stimuli interactively with real-time preview.

### What devices does StimuliApp support?

StimuliApp is supported on iPhone, iPad, and iPod touch devices, running on iOS. It can operate at 60 or 120 Hz depending on the device's model for precise timing.

### How accurate is the timing in StimuliApp?

StimuliApp utilizes the native Metal framework for direct GPU access, ensuring precise timing without dropped frames. This allows for highly accurate presentation of visual and auditory stimuli.

### Can StimuliApp generate reports?

Yes, StimuliApp offers automatic report generation. This feature helps in compiling the results of the psychophysical tests conducted within the app.

### Is StimuliApp free to use?

Yes, StimuliApp is available for free. There are no in-app purchases or advertisements associated with its use.

### How often is StimuliApp updated?

The latest version of StimuliApp is 2.2, last updated on December 9, 2025. Updates are provided to maintain performance and compatibility with newer iOS versions.

### What types of stimuli can be created with StimuliApp?

StimuliApp supports the creation of common stimuli including Gabors, random dots, images, sounds, and videos. Users can also adjust spatial and time units and utilize gamma-correction features.

## Version history (last 5 releases)

### 2.2 — 2025-12-09

Fixed a bug that prevented the user’s distance to the device from being displayed on screen in some scenes.

### 2.1 — 2025-11-29

It is now possible to display, for a given scene, the distance between the participant and the screen as measured by ARKit.

### 2.0 — 2025-11-19

- On ARKit-compatible devices, the app can now use the front camera to estimate the user’s viewing distance in real time.
- Added time synchronization with the Neon eye tracker and optional fiducial markers to improve boundary detection.

### 1.9 — 2021-11-05

New condition to change section according to current accuracy.
Increase the number of possible external audios to a maximum of 100.

### 1.8 — 2021-07-15

Added support for multitouch responses including two new types of response: "touch multiple objects" and "two finger touch screen".

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-19.*