# AcousticApp vs ImageTag

The clearest difference is price: AcousticApp at Free against ImageTag's $0.99. AcousticApp also leads on iOS requirement (13.0 vs 17.6). ImageTag's advantage is update cadence (every 2 months vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

AcousticApp is free to download; ImageTag costs $0.99 up front. AcousticApp sells 1 in-app purchase, starting at $0.99 per month and ImageTag sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

AcousticApp ships an update every 4 months, ImageTag every 2 months. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | AcousticApp | ImageTag |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | 81.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 90 MB | 6 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [objectiv GmbH & Co. KG](https://appshunter.io/developer/1121646876) | [乐祥 胡](https://appshunter.io/developer/1572365721) |

## What reviewers say

### AcousticApp

[App page](https://appshunter.io/ios/app/acousticapp/id1121646877)

Measure and analyze sound and room acoustics with professional tools. Calculate reverberation time, simulate acoustic changes, and test your hearing. Optimize spaces with advanced features and personalized reports.

**Highlights:** Professional sound and noise measurement (RTA), Reverberation time calculation and evaluation, Acoustic simulation before/after optimization, Hearing ability test across frequency ranges, Room acoustics calculation with user-defined absorbers, Personalized report generation

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Acoustic App Pro Version | $0.99 | per month |


### ImageTag

[App page](https://appshunter.io/ios/app/imagetag/id6763085531)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30天会员 | $4.99 | per month |
| 360天会员 | $6.99 | per year |
| 专业版终身会员 | $12.99 | one-time |


## Frequently asked questions

### Is AcousticApp free?

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

### Is ImageTag free?

ImageTag costs $0.99, and also offers in-app purchases.

### Do AcousticApp or ImageTag have ads?

Neither AcousticApp nor ImageTag shows ads.

### Which is updated more often, AcousticApp or ImageTag?

AcousticApp ships an update every 4 months, and ImageTag every 2 months. Most recently, AcousticApp was updated on October 24, 2026 and ImageTag on October 4, 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.*