# D0TS Echoplex vs Simple Piano CAEN

The clearest difference is price: D0TS Echoplex at Free against Simple Piano CAEN's $0.99. D0TS Echoplex also leads on device support (4 vs 1) and iOS requirement (14.0 vs 17.0). Simple Piano CAEN's advantage is update cadence (monthly vs every 11 months). On ads and in-app purchases there is nothing between them.

D0TS Echoplex is free to download; Simple Piano CAEN costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

D0TS Echoplex ships an update every 11 months, Simple Piano CAEN monthly. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | D0TS Echoplex | Simple Piano CAEN |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.1 (411 ratings)](https://appshunter.io/ios/app/d0ts-echoplex/id308598596/reviews)** | — |
| Number of ratings | **411** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | Free | — |
| Size | 2 MB | 55 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vincent Tourraine](https://appshunter.io/developer/308598599) | [CAEN Co., Ltd.](https://appshunter.io/developer/1770546611) |

## What reviewers say

### D0TS Echoplex

[App page](https://appshunter.io/ios/app/d0ts-echoplex/id308598596)

Recreate the iconic "Echoplex" song by Nine Inch Nails with this music sequencer. Experience the same visuals and sounds used during live performances, allowing you to play the drum line on your device.

**Highlights:** Music sequencer, Recreate "Echoplex" song, Live performance tool, Authentic visuals and sounds, Drum line recreation

**In-app purchases:** none

**What reviewers like**

- 👍 Sweet nostalgia
- 👍 Thank you for updating
- 👍 Awesome
- 👍 Fun to play around with
- 👍 Great app for any NIN fan

**What reviewers complain about**

- 🐛 Instruments not working
- 🐛 Lags like crazy
- 🐛 Terrible execution
- 🐛 Samples play twice
- 🐛 Out of sync

**Reported bugs**

- Guitar, bass, and vocals don't match up
- Vocals and other tracks don't sync with beat
- App crashes or stops working

**Requested features**

- Enable original sound samples and selection queues
- Add ability to change tempo
- Add more drum sounds and samples
- Add BPM display
- Add more songs and instruments


### Simple Piano CAEN

[App page](https://appshunter.io/ios/app/simple-piano-caen-keyboard/id6781255447)

**In-app purchases:** none


## Frequently asked questions

### Is D0TS Echoplex free?

D0TS Echoplex is free to download, with no in-app purchases.

### Is Simple Piano CAEN free?

Simple Piano CAEN costs $0.99, with no in-app purchases.

### Do D0TS Echoplex or Simple Piano CAEN have ads?

Neither D0TS Echoplex nor Simple Piano CAEN shows ads.

### Which is updated more often, D0TS Echoplex or Simple Piano CAEN?

D0TS Echoplex ships an update every 11 months, and Simple Piano CAEN monthly. Most recently, D0TS Echoplex was updated on October 21, 2026 and Simple Piano CAEN on October 25, 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.*