Harmonix vs AddStation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonix
This app provides an intelligent controller for the Elektron Digitone FM Synth, offering features like sound type programming, parameter randomization, and pattern generation. It allows for manual or queued pattern launching and includes customizable keyboard filters for note selection and parameter control.
- Intelligent Sound Types
- Parameter Randomize/Morph/Reset
- Sound Design Functions & Macros
- Mixer Control
- Intelligent Pattern Generation
- Customizable Keyboard Filters
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Harmonix is an intelligent controller for Elektron's Digitone FM Synth! - Intelligent Sound Types (Pad, Strings, Drone, Hybrid, Keys, Classic, Dub, Mono, Organ, Bass, Square, Noise, Kick, Perc, Chaos, Custom) lets you program Sounds with minimal effort - Randomize / Morph / Reset parameters (Tracks, Pages, MFX, Mixer, Mods) - Sound design functions and macros - Mixer to control Track Levels, Mute, Pan, Drive & FX Sends - Randomize Modulations - Intelligent Pattern Generation - Snapshots for install recall of Sounds - Manually launch Patterns or Queue up to 16 Patterns (Song Mode) - Save / Load Presets - Customizable Keyboard filters notes to the selected Key / Scale, and controls various parameters with vertical finger movement *OS 1.30 or higher is required
AddStation
Explore new sonic territories with this advanced additive synthesis tool. Create complex timbres by combining thousands of sine waves and unique morph sequencing. Integrate seamlessly with iOS production environments and enjoy a suite of built-in effects.
- Fractal additive synthesis
- Sound morphing
- Over 170 sound presets
- AUv3 AudioUnit integration
- Built-in effects suite
- Audiobus 3 and Ableton Link support
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The next generation of additive synthesis Additive synthesis is a sound synthesis technique that creates timbre by adding sine waves together. The timbre of musical instruments can be considered to consist of multiple harmonic or inharmonic partials or overtones. VirSyn already has a remarkable track record of products ( CUBE, POSEIDON ) trying to make this virtually unlimited synthesis method manageable for creative sound designers and musicians. AddStation is the next step forward giving you a tool to explore completely new sonic territory. The massive amount of sine waves in AddStation - thousands per voice - together with unique morph sequencing blocks blur the frontiers between analog and digital sonic realms. And all this integrated in all relevant iOS production environments especially the emerging AUv3 AudioUnit standard. Synthesis • Fractal additive synthesis • over 170 sound presets • Four parts with 8 Additive Sequence Blocks • Sound morphing • up to 512 partials per voice with independent AD envelopes • harmonic/inharmonic spectra • Ringmodulation • arbitrary filter function and noise spectra • four independent analog style Arpeggiators Effects • Chorus • Phaser • Flanger • Overdrive • Parametric EQ • Echo/Delay • Reverb Global • AUv3 for Host integration • Audiobus 3 compatible (Input slot) with state saving • Support for Ableton Link. • Inter-app audio compatible (Instrument/Generator) • CoreMIDI / Virtual MIDI • Audio recorder.
Screenshots
Verdict
The clearest difference is rating: Harmonix at 5.0 against AddStation's 4.5. Harmonix also leads on review sentiment (100% vs 82%). AddStation's advantage is price ($8.99 vs $14.99) and ratings volume (42 vs 5). 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
Harmonix costs $14.99 and AddStation $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Harmonix holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: AddStation has 42 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Harmonix's written reviews are positive against 82% of AddStation's.
Harmonix ships an update every 2 weeks, AddStation weekly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Harmonix | AddStation |
|---|---|---|
| Price | $14.99 | $8.99 — better |
| Rating | 5.0 (5 ratings) — better | 4.5 (42 ratings) |
| Positive reviews | 100.0% of reviews — better | 82.1% of reviews |
| Number of ratings | 5 | 42 — better |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 13 MB | 133 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcos Kohler | Harry Gohs |
Customer experience
Harmonix
AddStation
In-app purchases
Harmonix
No in-app purchases
AddStation
No in-app purchases









