# RM vs AddStation

The clearest difference is update cadence: AddStation at weekly against RM's every 10 months. AddStation also leads on review sentiment (82% vs 67%) and device support (3 vs 1). RM's advantage is iOS requirement (9.0 vs 12.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

RM costs $9.99 and AddStation $8.99 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 4.5 for AddStation. Both are backed by a comparable volume of ratings — 18 and 43 respectively. Written reviews are what separate them: 67% of RM's written reviews are positive against 82% of AddStation's.

RM ships an update every 10 months, AddStation weekly. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RM | AddStation |
| --- | --- | --- |
| Price | $9.99 | **$8.99** |
| Rating | **[4.6 (18 ratings)](https://appshunter.io/ios/app/rm-1-wave-modulator/id1436855751/reviews)** | [4.5 (43 ratings)](https://appshunter.io/ios/app/addstation/id1500919657/reviews) |
| Number of ratings | 18 | **43** |
| Positive reviews | 66.7% of reviews | **82.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 35 MB | 133 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [Harry Gohs](https://appshunter.io/developer/382428644) |

## What reviewers say

### RM

[App page](https://appshunter.io/ios/app/rm-1-wave-modulator/id1436855751)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### AddStation

[App page](https://appshunter.io/ios/app/addstation/id1500919657)

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.

**Highlights:** Fractal additive synthesis, Sound morphing, Over 170 sound presets, AUv3 AudioUnit integration, Built-in effects suite, Audiobus 3 and Ableton Link support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RM free?

RM costs $9.99, with no in-app purchases.

### Is AddStation free?

AddStation costs $8.99, with no in-app purchases.

### Which has better reviews, RM or AddStation?

RM is rated higher. RM averages 4.6 out of 5 from 18 ratings, while AddStation averages 4.5 from 43 ratings.

### Do RM or AddStation have ads?

Neither RM nor AddStation shows ads.

### Which is updated more often, RM or AddStation?

RM ships an update every 10 months, and AddStation weekly. Most recently, RM was updated on October 6, 2026 and AddStation on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*