RM vs ID700
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RM
This audio effect app offers versatile modulation capabilities, including ring, amplitude, phase, and frequency modulation. It features a built-in carrier oscillator, multimode filter, envelope follower, and LFO for creating unique sounds. It can be used standalone or with other audio apps.
- Multiple modulation types (Ring, AM, FM, Phase)
- Built-in carrier oscillator
- Multimode filter (LP, HP, BP)
- Envelope follower and LFO
- Standalone and IAA/Audiobus support
- AUv3 plugin compatibility
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RM-1 Wave Modulator RM-1 is a multi purpose audio effect designed around various types of modulation. Featuring a built-in carrier oscillator, multimode filter, envelope follower and low frequency oscillator, RM-1 creates new sounds by combining carrier waveform and the audio input in different ways. Types of modulation: - Ring Modulation (virtual analog) - Ring Modulation (digital) - Amplitude Modulation - Phase Modulation (DX-style FM) - Frequency Modulation (linear) Overview: - Built-in carrier oscillator with variable wave-shape (sine->square) - Built-in multimode Filter (LP, HP, BP) - Built-in Envelope Follower and LFO Connectivity: - Standalone (MIC, USB audio) - IAA / Audiobus - AUv3 Plugin
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 update cadence: ID700 at monthly against RM's every 10 months. ID700 also leads on review sentiment (88% vs 67%) and rating (4.8 vs 4.6). RM's advantage is price ($9.99 vs $12.99) and iOS requirement (9.0 vs 12.0). On ads, in-app purchases, monetization model and device support 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
RM costs $9.99 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. That said, the two scores are not equally well evidenced: ID700 has 128 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 67% of RM's written reviews are positive against 88% of ID700's.
RM ships an update every 10 months, ID700 monthly. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.
| Parameter | RM | ID700 |
|---|---|---|
| Price | $9.99 — better | $12.99 |
| Rating | 4.6 (18 ratings) | 4.8 (128 ratings) — better |
| Positive reviews | 66.7% of reviews | 87.5% of reviews — better |
| Number of ratings | 18 | 128 — better |
| Update frequency | Every 10 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPad |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 35 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Aras | Jonathan Schatz |
Customer experience
RM
ID700
Bugs and requests
RM
Not enough reviews yet to summarise bugs or requests.
ID700
Reported bugs
5 issues- Crashes on startup
- MIDI cannot select a channel, responds to all
- App does not launch when plugged into an audio interface
- Sliders not functioning properly (combined left/right and up/down movement)
- Takes value from where slider is touched, preventing adjustment
Requested features
8 requests- Option for sliders to behave like faders
- Expandable harmonics section for precision
- On-screen mod wheel and pitch bend
- Option for different color schemes/themes
- Ability to make certain sections bigger for finer control
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- Mod wheel within on-screen keyboard or option to enable vertical/horizontal axis
- Four outputs with circular spatialization
- Option to double-tap to zero controls
In-app purchases
RM
No in-app purchases
ID700
No in-app purchases
