RM vs TB Flowtones
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
TB Flowtones
This virtual analog synthesizer app offers a true VA synthesis engine with analog-modeled filters and extensive modulation options. Create warm, analog-sounding music with a powerful architecture, diverse waveforms, and pro-grade effects. It also includes an integrated step sequencer and hundreds of presets.
- True virtual analog synthesis engine
- Analog-modelled non-linear filters
- Extensive modulation options
- Pro-grade studio effects
- Integrated step sequencer
- Hundreds of presets and intelligent randomizer
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TB Flowtones Virtual Analog Synthesizer app and AUv3 plug-in Thanks to it's true VA synthesis engine, the use of analog-modelled non-linear filters and extensive modulation options, Flowtones sounds warmer and more analog than digital romplers and wavetable-based synths. TB Flowtones comes as stand-alone app as well as AUv3 plugin. True virtual analog synthesis features: - 4 VCO architecture (two voice layers with two VCOs each) - 4 synthesis engine types, in part modelled after famous analog synthesisers - 36 analog VCO waveforms featuring all classic waveforms and more - All VCO waveforms support pulse width modulation - Full stereo and mono unison modes for each VCO independently - Noise and subharmonic oscillators for each VCO - Unique ring and self-modulation matrix - High-quality, warm, non-linear filters (VCF) with over 30 filter types, including unique multi-resonance filters Modulation features: - Four LFOs with 30 waveforms each - LFOs can modulate other LFOs, including themselves! - Three additional envelope generators, with key velocity modulation - Quick access to modulation strengths through context menus - Hundreds of modulation signal paths available - LFOs can produce noise as waveform to randomly modulate other parameters; for example to simulate slight variations in analog filter parameters as they happen in analog circuits. Pro-grade effects - Studio-quality reverb, delay, and chorus effects - Unique formant filter to add vocal character - Analog and digital distortion / bit crushing effects - Master equaliser and peak limiter for final touch - Non-linear power supply simulation for authentic interaction between notes Step sequencer - Fully integrated, intuitive step sequencer - Can trigger chords and note series / phrases - Can run asynchronously or synchronously to the host - Smart copy/paste of note series to improve workflow - Smart zoom: edit fine details while keeping an overview over the full sequence Presets and intelligent randomizer - Flowtones comes with hundreds of presets to spark your creativity - Intelligent randomizer to explore endless sound synthesis possibilities What you should know: - Licenses acquired for this platform are not compatible with other platforms. - Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.
Screenshots
Verdict
The clearest difference is update cadence: TB Flowtones at every 3 months against RM's every 10 months. TB Flowtones also leads on review sentiment (83% vs 67%) and chart position (#188 vs unranked). RM's advantage is iOS requirement (9.0 vs 13.0). On price, rating, ratings volume and ads 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 TB Flowtones $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for RM against 4.7 for TB Flowtones. Both are backed by a comparable volume of ratings — 18 and 39 respectively. Written reviews are what separate them: 67% of RM's written reviews are positive against 83% of TB Flowtones's.
RM ships an update every 10 months, TB Flowtones every 3 months. The most recent releases landed on September 19, 2026 and September 26, 2026 respectively.
| Parameter | RM | TB Flowtones |
|---|---|---|
| Price | $9.99 | $9.99 |
| Rating | 4.6 (18 ratings) | 4.7 (39 ratings) — better |
| Positive reviews | 66.7% of reviews | 82.9% of reviews — better |
| Number of ratings | 18 | 39 — better |
| Update frequency | Every 10 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #188 — better |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 35 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Aras | ToneBoosters |
Customer experience
RM
TB Flowtones
In-app purchases
RM
No in-app purchases
TB Flowtones
No in-app purchases









