Arpie vs Cube Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Cube Synth
Explore additive synthesis with intuitive sound morphing and deep parameter control. Create complex soundscapes, vocal phrases, or rhythms with ease. Offers a unique randomizer for instant patch generation.
- Additive synthesis engine
- Intelligent sound morphing
- Over 400 sound presets
- Programmable arpeggiator
- Multiple built-in effects
- Audiobus and Inter-app audio support
- Random sound patch generator
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Cube Synth is a groundbreaking new software instrument giving you the power and flexibility of additive synthesis together with easy editing and morphing capabilities. Macro parameters allow you to control this beast with unequalled ease. Intelligent sound morphing capabilities enables you to easily create complex evolving sound scapes, vocal phrases or stunning rhythms simply by choosing up to four sound sources from a predefined set. Then add one of the predefined envelopes and a unique, complex sound preset containing thousands of parameters is created! If you want to dive deeper into the inner secrets of this synthesis monster you can manipulate each parameter individually to get precise control over the sound. A number of high level parameters such as Brightness and Harmonic spread control hundreds of synthesis parameters in a way modeled after the inner workings of natural instruments. Cube Synth gives you also a new method of getting randomly generated sound patches in a way you never experienced before: roll the dice! Every single try gives you a new unique sound patch, really every try, promised… Synthesis • over 400 sound presets • four morphable sound sources • up to 512 partials per voice • harmonic/inharmonic spectra • arbitrary noise spectra • morphable filter banks • 3 Envelopes with tempo sync • 64 time/level segments per envelope Arpeggiator • Uses programmable sequences with up to 32 steps. • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • 32 Arpeggios included, unlimited useer arpeggios possible. • For each step you can program tie, accent, transposition and note order Effects • Chorus • Phaser • Overdrive • Ensemble • Echo/Delay • Reverb Global • Audiobus 2 compatible (Input slot) with state saving • Support for Ableton Link. • Inter-app audio compatible (Instrument/Generator) • CoreMIDI / Virtual MIDI • Audio recorder with Metronome. • Upload to SoundCloud and File Export. • Audio pasteboard.
Screenshots
Verdict
The clearest difference is price: Arpie at Free against Cube Synth's $1.99. Arpie also leads on device support (3 vs 1). Cube Synth's advantage is update cadence (every 4 months vs every 97 months) and rating (4.7 vs 4.5). On review sentiment, ratings volume, ads and in-app purchases 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
Arpie is free to download; Cube Synth costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Cube Synth holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 10 and 16 respectively. Written reviews complicate that: 93% of Arpie's written reviews are positive against 89% of Cube Synth's, so the app with the better star average is not the one people write more warmly about.
Arpie ships an update every 97 months, Cube Synth every 4 months. The most recent releases landed on October 7, 2026 and September 27, 2026 respectively.
| Parameter | Arpie | Cube Synth |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.5 (10 ratings) | 4.7 (16 ratings) — better |
| Positive reviews | 92.5% of reviews — better | 89.5% of reviews |
| Number of ratings | 10 | 16 — better |
| Update frequency | Every 97 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 25 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Keijiro Takahashi | Harry Gohs |
Customer experience
Arpie
Cube Synth
In-app purchases
Arpie
No in-app purchases
Cube Synth
No in-app purchases









