StimuliApp vs Combos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
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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.
Combos
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“Combos” is an iOS app that allows you to perform lottery, pairing, numbering, grouping, etc. using facial photos extracted using facial recognition. Ads will be displayed when you tap the start button and when copying data, but these ads can be removed by making an in-app purchase. When ads are removed through in-app purchases, introductions of other apps will also be removed. [details] https://app.brain-workout.org/combos-e/
Screenshots
Verdict
The clearest difference is in-app purchases: StimuliApp at none against Combos's 1. StimuliApp also leads on ads (none vs shown) and update cadence (every 6 weeks vs every 8 months). On price 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. Combos sells 1 one-off in-app purchase. StimuliApp asks for nothing beyond the download.
StimuliApp ships an update every 6 weeks, Combos every 8 months. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.
| Parameter | StimuliApp | Combos |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks — better | Every 8 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 10 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Rafael Marin Campos | Yasuyoshi Ota |
In-app purchases
StimuliApp
No in-app purchases
Combos
- remove ads$3.99
Questions
Is StimuliApp free?
Is Combos free?
Do StimuliApp or Combos have ads?
Which is updated more often, StimuliApp or Combos?
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