KNOCK Clipper vs FrobulatorAU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KNOCK Clipper
This app offers a premium, adjustable hard and soft clipper effect for music production. It's inspired by the signature sound of a popular drum kit series, designed to shape the sonics of modern music.
- User adjustable hard clipper
- User adjustable soft clipper
- Premium quality audio effect
- Inspired by signature drum kit sounds
- Shapes modern music sonics
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KNOCK Clipper is a premium quality, user adjustable hard & soft clipper designed by DECAP. It is the CLIP module from his acclaimed plugin, KNOCK. It is inspired by the signature sound of his popular drum kit series DRUMS THAT KNOCK, which has helped shaped the sonics of modern music.
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.
Screenshots
Verdict
The clearest difference is rating: FrobulatorAU at 5.0 against KNOCK Clipper's 4.3. FrobulatorAU also leads on monetization model (free vs paid) and update cadence (every 9 days vs every 34 months). KNOCK Clipper's advantage is iOS requirement (12.0 vs 17.0). On price, ratings volume, 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 holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 7 and 8 respectively.
KNOCK Clipper ships an update every 34 months, FrobulatorAU every 9 days. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | KNOCK Clipper | FrobulatorAU |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (7 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 | 8 — better |
| Update frequency | Every 34 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Plugins That Knock | Matthew Caldwell |
Customer experience
KNOCK Clipper
FrobulatorAU
In-app purchases
KNOCK Clipper
No in-app purchases
FrobulatorAU
No in-app purchases
