# Image Saliency vs iDiagnostic

The clearest difference is ads: iDiagnostic at none against Image Saliency's shown. iDiagnostic also leads on device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

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

Image Saliency ships an update fortnightly, iDiagnostic weekly. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Image Saliency | iDiagnostic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/idiagnostic/id6764337271/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | — | Free |
| Size | 38 MB | 9 MB |
| Requires iOS | 17.7.2 | **17.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Giang Do](https://appshunter.io/developer/1434395412) |

## What reviewers say

### Image Saliency

[App page](https://appshunter.io/ios/app/image-saliency/id6511211544)

**Features:** macOS Compatibility

**In-app purchases:** none


### iDiagnostic

[App page](https://appshunter.io/ios/app/idiagnostic/id6764337271)

This tool helps you quickly check the functionality of your iPhone or iPad's hardware components. It tests the display, touch screen, cameras, speakers, and microphone, ensuring everything is working as expected. Designed for privacy, all tests are performed on-device with no data collection.

**Highlights:** Display color and dead pixel test, Configurable touch screen grid test, Camera detection and individual testing, Speaker and earpiece audio output test, Microphone recording and playback test, On-device processing, no data collection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Image Saliency free?

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

### Is iDiagnostic free?

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

### Do Image Saliency or iDiagnostic have ads?

Image Saliency shows ads; iDiagnostic does not.

### Which is updated more often, Image Saliency or iDiagnostic?

Image Saliency ships an update fortnightly, and iDiagnostic weekly. Most recently, Image Saliency was updated on October 17, 2026 and iDiagnostic on October 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.*