# StimuliApp vs Rybit Ops

StimuliApp and Rybit Ops are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

StimuliApp ships an update every 6 weeks, Rybit Ops every 5 weeks. The most recent releases landed on September 9, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | StimuliApp | Rybit Ops |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stimuliapp/id1497026540/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 10 MB | 66 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rafael Marin Campos](https://appshunter.io/developer/1497026539) | [Moov Technology (S) Pte. Ltd.](https://appshunter.io/developer/1467143830) |

## What reviewers say

### StimuliApp

[App page](https://appshunter.io/ios/app/stimuliapp/id1497026540)

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.

**Highlights:** 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

**In-app purchases:** none


### Rybit Ops

[App page](https://appshunter.io/ios/app/rybit-ops/id1563631282)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StimuliApp free?

StimuliApp is free to download, with no in-app purchases.

### Is Rybit Ops free?

Rybit Ops is free to download, with no in-app purchases.

### Do StimuliApp or Rybit Ops have ads?

Neither StimuliApp nor Rybit Ops shows ads.

### Which is updated more often, StimuliApp or Rybit Ops?

StimuliApp ships an update every 6 weeks, and Rybit Ops every 5 weeks. Most recently, StimuliApp was updated on September 9, 2026 and Rybit Ops on September 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*