# StimuliApp vs Precision Toolkit

The clearest difference is in-app purchases: StimuliApp at none against Precision Toolkit's 1. StimuliApp also leads on iOS requirement (13.0 vs 26.0). Precision Toolkit's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Precision Toolkit sells 1 in-app purchase, starting at $2.99 per month. StimuliApp asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for StimuliApp against 5.0 for Precision Toolkit. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

StimuliApp ships an update every 6 weeks, Precision Toolkit every 2 weeks. Both last shipped on September 9, 2026.

## The numbers

| Metric | StimuliApp | Precision Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/stimuliapp/id1497026540/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/precision-toolkit-level/id6767830260/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Size | 10 MB | 12 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rafael Marin Campos](https://appshunter.io/developer/1497026539) | [GuruApps, LLC](https://appshunter.io/developer/1896512134) |

## 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


### Precision Toolkit

[App page](https://appshunter.io/ios/app/precision-toolkit-level/id6767830260)

A versatile measuring toolkit for home improvement and DIY projects. It uses device sensors and the camera to check angles, measure surfaces, align objects, and detect magnetic fields. Offers a variety of tools in a user-friendly interface.

**Highlights:** Bubble Level, Surface Level, Compass, Metal Detector, Laser Level, AR Ruler, Vibration Meter

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Toolkit Pro Monthly | $2.99 | per month |


## Frequently asked questions

### Is StimuliApp free?

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

### Is Precision Toolkit free?

Precision Toolkit is free to download, with in-app purchases available.

### Which has better reviews, StimuliApp or Precision Toolkit?

StimuliApp and Precision Toolkit are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do StimuliApp or Precision Toolkit have ads?

Neither StimuliApp nor Precision Toolkit shows ads.

### Which is updated more often, StimuliApp or Precision Toolkit?

StimuliApp ships an update every 6 weeks, and Precision Toolkit every 2 weeks. Most recently, StimuliApp was updated on September 9, 2026 and Precision Toolkit on September 9, 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.*