# ERS_DimD vs Rhythm Ace

The clearest difference is review sentiment: ERS_DimD at 100% against Rhythm Ace's 0%. ERS_DimD also leads on rating (4.0 vs 2.0) and ratings volume (5 vs 1). Rhythm Ace's advantage is price (Free vs $9.99) and update cadence (every 2 months vs every 8 months). On ads and in-app purchases there is nothing between them.

Rhythm Ace is free to download; ERS_DimD costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ERS_DimD holds the better App Store score, 4.0 against 2.0. That said, the two scores are not equally well evidenced: ERS_DimD has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of ERS_DimD's written reviews are positive against 0% of Rhythm Ace's.

ERS_DimD ships an update every 8 months, Rhythm Ace every 2 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ERS_DimD | Rhythm Ace |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.0 (5 ratings)](https://appshunter.io/ios/app/ers-dimd/id1584371989/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/rhythm-ace/id6763743868/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 7 MB | 6 MB |
| Requires iOS | **9.3** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Christian Siedschlag](https://appshunter.io/developer/538434682) | [Tero Aarnio](https://appshunter.io/developer/1895470476) |

## What reviewers say

### ERS_DimD

[App page](https://appshunter.io/ios/app/ers-dimd/id1584371989)

This audio plugin emulates the classic Roland Dimension D chorus effect, known for its subtle, airy stereo enhancement. It adds presence to sounds without compromising the original audio structure. Enhanced controls offer more flexibility than the original hardware.

**Highlights:** Emulates Roland Dimension D chorus, Subtle stereoizing effect, Adds presence and airiness, Enhanced control options, Preserves original sound structure

**Features:** Vision Pro support

**In-app purchases:** none


### Rhythm Ace

[App page](https://appshunter.io/ios/app/rhythm-ace/id6763743868)

This app is a faithful simulator of a vintage 1967 drum machine, recreating its authentic analog sounds and rhythm presets. It allows for real-time synthesis of percussion, pattern layering, and individual voice muting for unique groove creation.

**Highlights:** Faithful vintage drum machine simulation, Real-time synthesized analog sounds, 16 classic rhythm presets, Authentic pattern combining, Individual voice cancel controls, Precision tempo control

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

**In-app purchases:** none


## Frequently asked questions

### Is ERS_DimD free?

ERS_DimD costs $9.99, with no in-app purchases.

### Is Rhythm Ace free?

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

### Which has better reviews, ERS_DimD or Rhythm Ace?

ERS_DimD is rated higher. ERS_DimD averages 4.0 out of 5 from 5 ratings, while Rhythm Ace averages 2.0 from 1 ratings.

### Do ERS_DimD or Rhythm Ace have ads?

Neither ERS_DimD nor Rhythm Ace shows ads.

### Which is updated more often, ERS_DimD or Rhythm Ace?

ERS_DimD ships an update every 8 months, and Rhythm Ace every 2 months. Most recently, ERS_DimD was updated on November 3, 2026 and Rhythm Ace on October 31, 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.*