D0TS Echoplex vs Arpie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D0TS Echoplex
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.
- Music sequencer
- Recreate "Echoplex" song
- Live performance tool
- Authentic visuals and sounds
- Drum line recreation
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D0TS Echoplex is a basic music sequencer designed to let you perform the Nine Inch Nails song “Echoplex”. During the “Lights In The Sky” tour, the band used to play this song with a giant sequencer at the background of the stage. D0TS Echoplex gives you the same visuals and sounds, so you can easily recreate the drum line, right in your hand. Feel free to use this application as a music instrument to play the song live by yourself, or with your band. All the audio files are extracted from the Nine Inch Nails album “The Slip”, available at nin.com under a creative commons attribution non-commercial share alike license.
Arpie
This app transforms bouncing balls into a musical experience. Place balls of varying heights to create unique melodies and rhythms. It's an intuitive way for anyone to explore music creation.
- Bouncing ball music generation
- Adjustable ball height for melody
- Create musical sequences
- Intuitive music creation
- Variety of musical patterns
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Bouncing balls turn into music! Arpie is a novel musical app that allows anyone to enjoy music. Put balls as many as you like, them watch them playing a beautiful melody. Higher balls hit the keys with long pauses, and lower ones hit them fast and repeatedly. By combining them, you can easily create a wide variety of musical sequences.
Screenshots
Verdict
The clearest difference is rating: Arpie at 4.5 against D0TS Echoplex's 3.1. Arpie also leads on review sentiment (93% vs 73%) and iOS requirement (11.0 vs 14.0). D0TS Echoplex's advantage is update cadence (every 11 months vs every 97 months) and ratings volume (411 vs 10). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Arpie holds the better App Store score, 4.5 against 3.1. That said, the two scores are not equally well evidenced: D0TS Echoplex has 411 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 73% of D0TS Echoplex's written reviews are positive against 93% of Arpie's.
D0TS Echoplex ships an update every 11 months, Arpie every 97 months. The most recent releases landed on October 21, 2026 and October 19, 2026 respectively.
| Parameter | D0TS Echoplex | Arpie |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (411 ratings) | 4.5 (10 ratings) — better |
| Positive reviews | 72.7% of reviews | 92.5% of reviews — better |
| Number of ratings | 411 — better | 10 |
| Update frequency | Every 11 months — better | Every 97 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Vincent Tourraine | Keijiro Takahashi |
Customer experience
D0TS Echoplex
Arpie
Bugs and requests
D0TS Echoplex
Reported bugs
3 issues- Guitar, bass, and vocals don't match up
- Vocals and other tracks don't sync with beat
- App crashes or stops working
Requested features
5 requests- 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
Arpie
Not enough reviews yet to summarise bugs or requests.
In-app purchases
D0TS Echoplex
No in-app purchases
Arpie
No in-app purchases
