PolyPhase vs ID700
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PolyPhase
Create complex, interwoven melodies and rhythms with a generative sequencer. Control note generation, randomize sequences, and integrate with external MIDI hardware or the included wavetable synthesizer. Save and recall your creations with presets and snapshots.
- Generative melody creation with phase offsets
- 8 independent sequencers with customizable properties
- Draw own notes or use intelligent randomization
- Wavetable synthesizer with FX
- MIDI output and input support
- Global Key/Scale filtering and Chord Masks
- Save/Load presets and Snapshots
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PolyPhase is a generative sequencer! Melodies on a Master Track are created on the fly & copied, with phase offsets, to Follower Tracks. This structure, along with the interplay of various probabilities, leads to interwoven melodies and rhythms. You can disable the generation of notes & draw your own, or select some of the randomization functions Send MIDI to external hardware, other iOS instruments, or use the included wavetable synthesizer! - 8 independent Sequencers with their own rate, direction, transposition & other properties - Disable the generation of notes to draw your own, or use some of the intelligent functions provided - Random Euclid & Drum Sequences - The Wavetable Synth + FX lets you use PolyPhase even if you don't own any external Instruments - Filter notes to a Global Key / Scale and toggle Chord Masks - Save / Load Presets - Snapshots for install recall of your Sequences - Intelligently Randomize and Morph your Sequences & Synth sounds - Accepts external MIDI clock & can provide clock to other devices - Audiobus (Audio / State) & Inter-App Audio support - Link Support
ID700
This app is a software synthesizer that recreates the voice architecture of the Buchla 700. It offers hybrid FM and waveshaping synthesis with extensive customization options for sound design. It functions as a standalone app or an AUv3 plugin for music production software.
- Hybrid FM and waveshaping synthesis
- AUv3 and Standalone support
- Twelve voices with unique algorithms
- Fourteen complex envelopes per voice
- Two waveshapers per voice
- MPE capability
- Scala scale file support
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ID700 is a hybrid FM/waveshaping software synthesizer based on the voice architecture of the Buchla 700. ID700 runs in standalone mode and as an AUv3 plugin (Logic Pro, GarageBand, AUM, Cubasis 3). HISTORY In 1987 Don Buchla released the Buchla 700 synthesizer. It was the next logical step from Don's previous digital synths (the Buchla 400, Touché, Buchla 500) but was also influenced by the synth trends of the 1980's, specifically FM synthesis and the all-in-one workstation concept. As usual, Don was ahead of the curve and the 700 never took off. Very few were sold and even fewer functioning units exist today. I always loved the sound of Don's digital oscillators, and combined with the scarcity of the instrument it seemed like a fun project to recreate it in software and reintroduce its concepts to the world. FEATURES * AUv3 and Standalone support on iOS * twelve voices of four operator FM with twelve unique algorithms * fourteen complex envelopes per voice * two hundred professionally designed presets * two waveshapers per voice * preset randomizer * over forty factory wave shapes plus an editor for user created shapes * Scala scale file support with over four thousand included tunings from the Scala scale archive * MPE (MIDI Polyphonic Expression) capability for MPE controllers like the Roli Seabord, Linnstrument, and Sensel Morph * advanced MIDI implementation (including 14-bit CCs and Program Change) * an in-depth manual (60+ pages) is available in the app and from our website * iCloud support for sharing presets, waveshapes, and tunings between devices * up to 16x oversampling
Verdict
The clearest difference is price: ID700 at $12.99 against PolyPhase's $19.99. ID700 also leads on rating (4.8 vs 4.6) and review sentiment (88% vs 76%). PolyPhase's advantage is iOS requirement (10.0 vs 12.0). 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
PolyPhase costs $19.99 and ID700 $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ID700 holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 26 and 128 respectively. Written reviews point the same way: 76% of PolyPhase's written reviews are positive against 88% of ID700's.
PolyPhase ships an update every 3 weeks, ID700 monthly. The most recent releases landed on June 8, 2026 and August 13, 2026 respectively.
| Parameter | PolyPhase | ID700 |
|---|---|---|
| Price | $19.99 | $12.99 — better |
| Rating | 4.6 (26 ratings) | 4.8 (128 ratings) — better |
| Positive reviews | 76.2% of reviews | 87.5% of reviews — better |
| Number of ratings | 26 | 128 — better |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPad |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 35 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcos Kohler | Jonathan Schatz |
Customer experience
PolyPhase
ID700
In-app purchases
PolyPhase
No in-app purchases
ID700
No in-app purchases







