# FabFilter Pro vs Robot Butter

The clearest difference is price: Robot Butter at $14.99 against FabFilter Pro's $29.99. Robot Butter also leads on update cadence (monthly vs every 9 months) and review sentiment (100% vs 86%). FabFilter Pro's advantage is ratings volume (24 vs 2) and iOS requirement (14.0 vs 17.0). On rating, ads, in-app purchases and monetization model there is nothing between them.

FabFilter Pro costs $29.99 and Robot Butter $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Robot Butter holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: FabFilter Pro has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 86% of FabFilter Pro's written reviews are positive against 100% of Robot Butter's.

FabFilter Pro ships an update every 9 months, Robot Butter monthly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | FabFilter Pro | Robot Butter |
| --- | --- | --- |
| Price | $29.99 | **$14.99** |
| Rating | [4.8 (24 ratings)](https://appshunter.io/ios/app/fabfilter-pro-q-2/id1401182622/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/robot-butter/id6759990682/reviews)** |
| Number of ratings | **24** | 2 |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 3 MB | 7 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPad | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [FabFilter](https://appshunter.io/developer/421796789) | [Christian Thompson](https://appshunter.io/developer/1511795684) |

## What reviewers say

### FabFilter Pro

[App page](https://appshunter.io/ios/app/fabfilter-pro-q-2/id1401182622)

This professional audio tool offers a high-quality equalizer for mixing and mastering. It features an intuitive interface with up to 24 bands, multiple phase modes, and advanced tools like Spectrum Grab and EQ Match for precise audio editing.

**Highlights:** Up to 24 EQ bands, Natural Phase mode, Spectrum Grab, EQ Match, Interactive EQ display, Universal filter slope support, Mid/side processing

**In-app purchases:** none


### Robot Butter

[App page](https://appshunter.io/ios/app/robot-butter/id6759990682)

This audio effect app creates dynamic soundscapes by blending animated modulation, adaptive reverb, and digital textures. It offers a fast, playable interface with direct control over key parameters and tempo-synced movement for evolving sound design.

**Highlights:** AUv3 audio effect for iPhone, iPad, and macOS, Animated modulation engine, Adaptive reverb stage, Tempo-synced LFO matrix, Digital texture effects, Built-in user manual, Factory and user presets

**In-app purchases:** none


## Frequently asked questions

### Is FabFilter Pro free?

FabFilter Pro costs $29.99, with no in-app purchases.

### Is Robot Butter free?

Robot Butter costs $14.99, with no in-app purchases.

### Which has better reviews, FabFilter Pro or Robot Butter?

Robot Butter is rated higher. FabFilter Pro averages 4.8 out of 5 from 24 ratings, while Robot Butter averages 5.0 from 2 ratings.

### Do FabFilter Pro or Robot Butter have ads?

Neither FabFilter Pro nor Robot Butter shows ads.

### Which is updated more often, FabFilter Pro or Robot Butter?

FabFilter Pro ships an update every 9 months, and Robot Butter monthly. Most recently, FabFilter Pro was updated on November 2, 2026 and Robot Butter on November 5, 2026.

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