Arpeggist vs Oscidia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arpeggist
This app transforms single notes or chords into complex musical patterns using a programmable step matrix editor and a unique random generator. It allows for live playing with an onscreen or hardware keyboard and includes an internal sound generator for immediate use.
- Programmable step matrix editor
- Random arpeggio generator
- Live playing with onscreen keyboard
- Internal sound generator
- Chord generator
- Dozens of selectable scales
Read full descriptionHide full description
Arpeggist is a MIDI Note arpeggiator with a very flexible step matrix editor for programming and a unique “rolling dice” random arpeggio generator. You can build arpeggios from scratch or use one of the factory arpeggios as foundation. You can also create an unlimited number of user arpeggio presets. Just play a chord or a single note and it gets transformed into a grooving monophonic synth line or a rhythmical chord pattern. Full featured programmable Arpeggiator • User programmable sequences with up to 32 steps. • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • 40 Factory arpeggios included, unlimited user arpeggios possible. • For each step you can program tie (bound notes), accent, transposition and note order • Use to control MIDI compatible Synthesiser Live • Play trigger notes live with the onscreen keyboard. • Optionally use CoreMIDI compatible hardware keyboard. • Chord generator plays complex chords on one finger playing. • Internal sound generator. • Selectable Arpeggiator MIDI Output port. • Dozens of scales selectable • Variable Keyboard layout for scale optimized playing Global • Audiobus 2 compatible (Input slot) with Preset saving. • Inter App Audio • Exchange user presets with File Sharing in iTunes. • Support for virtual MIDI input/output connections.
Oscidia
This powerful synthesizer app allows iOS users to create a vast array of sounds using multiple oscillators, wavetable synthesis, and advanced modulation options. It features a versatile sequencer with independent arpeggiators and built-in effects for complex sound design.
- 3 Oscillators Per Voice
- Wavetable & Additive Synthesis
- Morphing & Warping Wavetables
- 5 Morphable Filter Types
- 3 Independent Arpeggiators
- Mod Matrix
- Internal Effects Suite
Read full descriptionHide full description
Oscidia is an AUv3 plugin for iOS which can be loaded into your favorite DAW allowing you to use it as a sound source for any MIDI source. Its wide range of features and oscillator types allow it to produce a vast variety of sounds. In particular, the inclusion of WaveTable greatly expands the traditional wave types and brings a wealth of modulation options. Oscidia has 3 oscillators per voice, and each oscillator can be a different wavetable – all working and morphing together to create some incredibly amazing sounds. Oscidia includes SINE, SAW, SQUARE, TRIANGLE, SUPERSAW, SUPERSQUARE, WAVETABLE and ADDITIVE wave types. You can import and export compatible wavetables using drag and drop directly to the WaveTable manager. Wavetables support morphing and warping (phase distortion), all controlled by the Mod Matrix routing. The SINE and TRIANGLE wave types both support several wave folding modes which allow dramatic real-time morphing too. Oscidia also supports 5 filter types which support 12/24dB modes and morphable LP/BP/HP filter modes which can be automated from the Mod Matrix or via the Sequencer. The sequencer itself is very unique and allows up to 3 simultaneous ARPs to play at the same time. Each ARP can directly control the 3 oscillator levels independently per step, as well as the pitch, filter morph, cutoff frequency, probability, gate, note repeat and ties. This allows for some really complex rhythms to be created that are not tied to pitch. Oscidia Features: • 3 Oscillators Per Voice. • Support for Wavetable and Additive synthesis. • WaveTable supports Morph and Warp (Phase Distortion) features. • 4 LFOs Per Voice. • 5 Filter types with 12/24-bit slopes and morphable LP/BP/HP. • 4 ADSR (Attack, Decay, Sustain, Release ) or FEG (Fluid Envelope Generators). • Wave Folding is available for basic waveforms such as SINE and TRIANGLE. • OSC Sync. • XMod & Ring Mod (on osc1 & osc2). • Additive Synthesis for glass, metallic and bell like tones. • Build in Sequencer (with 3 independent ARPs). • Mod Matrix. • MPE Mode. • Internal Effects - reverb, delay, chorus, Haas, and Phaser effects. • Drag and Drop for import and export presets and wavetables. • Build in Help Manual.
Screenshots
Verdict
The clearest difference is review sentiment: Oscidia at 88% against Arpeggist's 14%. Oscidia also leads on rating (5.0 vs 2.0) and ratings volume (12 vs 3). Arpeggist's advantage is price ($2.99 vs $14.99) and iOS requirement (7.0 vs 13). On update cadence, 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
Arpeggist costs $2.99 and Oscidia $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Oscidia holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 12 respectively. Written reviews point the same way: 14% of Arpeggist's written reviews are positive against 88% of Oscidia's.
Arpeggist ships an update every 5 weeks, Oscidia every 6 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.
| Parameter | Arpeggist | Oscidia |
|---|---|---|
| Price | $2.99 — better | $14.99 |
| Rating | 2.0 (3 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 13.6% of reviews | 87.5% of reviews — better |
| Number of ratings | 3 | 12 — better |
| Update frequency | Every 5 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 13 |
| Further details — not scored | ||
| Size | 11 MB | 168 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | 4Pockets.com |
Customer experience
Arpeggist
Oscidia
In-app purchases
Arpeggist
No in-app purchases
Oscidia
No in-app purchases









