# JAX DYNAMICS vs Piano Memo

The clearest difference is price: Piano Memo at $0.29 against JAX DYNAMICS's $4.99. Piano Memo also leads on iOS requirement (12.0 vs 14.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

JAX DYNAMICS costs $4.99 and Piano Memo $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

JAX DYNAMICS ships an update every 2 months, Piano Memo every 4 months. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | JAX DYNAMICS | Piano Memo |
| --- | --- | --- |
| Price | $4.99 | **$0.29** |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/jax-dynamics-compander/id1619215243/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | — |
| Size | 26 MB | 66 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jens Guell](https://appshunter.io/developer/1195004865) | [Murat Saygin](https://appshunter.io/developer/1835723040) |

## What reviewers say

### JAX DYNAMICS

[App page](https://appshunter.io/ios/app/jax-dynamics-compander/id1619215243)

This audio processing tool combines compressor and expander functions for single-band dynamics. It offers various stereo operation modes and parallel processing options, compatible across multiple Apple platforms.

**Highlights:** Compressor and expander combination, Single-band dynamics processing, Multiple stereo operation modes, Independent and linked stereo/mid/side processing, Parallel processing (mix) option, AudioUnit (AUv3) format

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

**In-app purchases:** none


### Piano Memo

[App page](https://appshunter.io/ios/app/piano-memo/id6754459869)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JAX DYNAMICS free?

JAX DYNAMICS costs $4.99, with no in-app purchases.

### Is Piano Memo free?

Piano Memo costs $0.29, with no in-app purchases.

### Do JAX DYNAMICS or Piano Memo have ads?

Neither JAX DYNAMICS nor Piano Memo shows ads.

### Which is updated more often, JAX DYNAMICS or Piano Memo?

JAX DYNAMICS ships an update every 2 months, and Piano Memo every 4 months. Most recently, JAX DYNAMICS was updated on October 4, 2026 and Piano Memo on October 7, 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.*