FrobulatorAU vs Limn Audio Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FrobulatorAU
This audio effect plugin transforms sounds with spectral delay, adding unique character to music projects. It's a free and open-source tool designed for use in various audio applications, offering extensive creative possibilities.
- Spectral delay effect
- AUv3 plugin
- Use in GarageBand, AUM, and other DAWs
- Multiple instances per project
- Free and open-source
- No ads or in-app purchases
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Venerable inter-app audio effect Frobulator reborn — at long last — as an AUv3 plugin. Use it in GarageBand, AUM or your favourite audio application. Add multiple instances in the same project. Drag your frobulation kicking and screaming into the 21st century. Frobulator is a spectral delay effect. It makes your noises a little bit stranger. Twiddle the knobs to find something you like, or don't and throw it away. No-one will hold it against you. Frobulator is free as in beer and free as in speech. Freer, probably, given the state of both those things these days. No ads, no in-app purchases, no subscriptions, no surveillance, no nag screens. If you happen to be one of the 6 people who asked for this, rejoice! If you aren't, now's your chance to discover what you've been missing all this time. Or not. I'm not the boss of you.
Limn Audio Generator
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Limn is a touch-first iOS groovebox built for speed, expression, and flow. Sketch ideas quickly, shape patterns in multiple sequencer styles, perform live with hands-on controls, sync with your setup over MIDI, and export stereo WAV files without leaving the app. Whether you are building loops, jamming transitions, or capturing full ideas for your DAW, Limn keeps the process immediate and musical. Core Features Multiple sequencing approaches in one app Fast pattern creation designed for real-time experimentation Expressive performance controls for live play Global effects and mix shaping BLE MIDI and virtual MIDI routing MIDI clock and transport sync workflows Stereo WAV export with in-app share support Landscape-focused interface for performance clarity Built For Fast Creative Workflow Limn is designed to reduce friction between inspiration and output. Use quick controls to move from initial rhythm and melody ideas to evolving patterns and performance-ready scenes. Morph and variation workflows help keep patterns alive without breaking momentum. MIDI + External Workflow Friendly Connect Limn to compatible DAWs and hardware via Bluetooth MIDI or virtual routes, then integrate it into your existing setup. Use sync tools to keep timing aligned and move between standalone creation and external production smoothly. Export and Share When a sketch becomes a keeper, bounce a stereo WAV directly from Limn and share it instantly. Great for idea capture, collaboration, arrangement handoff, or quick posting. Privacy and Data Limn does not require account creation for core use. Project state and exported audio remain on your device unless you choose to share files.
Screenshots
Verdict
The clearest difference is iOS requirement: FrobulatorAU at 15.0 against Limn Audio Generator's 17.6. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
FrobulatorAU ships an update every 9 days, Limn Audio Generator weekly. The most recent releases landed on July 22, 2026 and September 27, 2026 respectively.
| Parameter | FrobulatorAU | Limn Audio Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 9 days | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 2 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Caldwell | JONATHAN RICHARD NICE |
In-app purchases
FrobulatorAU
No in-app purchases
Limn Audio Generator
No in-app purchases





