# StimuliApp vs BatchOptimize

The clearest difference is in-app purchases: StimuliApp at none against BatchOptimize's 6. StimuliApp also leads on iOS requirement (13.0 vs 16.0). BatchOptimize'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. BatchOptimize sells 6 one-off in-app purchases. 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 BatchOptimize. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

StimuliApp ships an update every 6 weeks, BatchOptimize every 2 weeks. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | StimuliApp | BatchOptimize |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/stimuliapp/id1497026540/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/batchoptimize-compress-media/id6802534677/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 14 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Rafael Marin Campos](https://appshunter.io/developer/1497026539) | [Lei Feng](https://appshunter.io/developer/1041447953) |

## 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


### BatchOptimize

[App page](https://appshunter.io/ios/app/batchoptimize-compress-media/id6802534677)

This app offers high-performance media and document compression for Apple devices. It can reduce file sizes by up to 90% while preserving quality, supporting various image, video, PDF, and audio formats. Automation features allow for quick processing and integration with other applications.

**Highlights:** Compress images, videos, and PDFs, Convert between multiple formats (WebP, AVIF, HEIC, MP4, MOV, GIF, PDF), Resize images and videos, Add text watermarks, Extract audio from videos, Automate tasks with Apple Shortcuts, Merge images into PDFs

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Features Upgrade Promo 50% OFF | $4.99 | one-time |
| Images & WebP Pack | $4.99 | one-time |
| PDF & Documents Pack | $4.99 | one-time |
| Video Optimizer Pack | $4.99 | one-time |
| Audio Transcoder Pack | $4.99 | one-time |
| All Features Bundle (50% Off) | $9.99 | one-time |


## Frequently asked questions

### Is StimuliApp free?

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

### Is BatchOptimize free?

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

### Which has better reviews, StimuliApp or BatchOptimize?

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

### Do StimuliApp or BatchOptimize have ads?

Neither StimuliApp nor BatchOptimize shows ads.

### Which is updated more often, StimuliApp or BatchOptimize?

StimuliApp ships an update every 6 weeks, and BatchOptimize every 2 weeks. Most recently, StimuliApp was updated on October 11, 2026 and BatchOptimize on October 5, 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.*