# Robot Butter vs NotePulse

The clearest difference is price: NotePulse at $0.99 against Robot Butter's $14.99. NotePulse also leads on update cadence (every 10 days vs monthly). Robot Butter's advantage is device support (4 vs 2). On ads, in-app purchases and iOS requirement there is nothing between them.

Robot Butter costs $14.99 and NotePulse $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Robot Butter ships an update monthly, NotePulse every 10 days. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Robot Butter | NotePulse |
| --- | --- | --- |
| Price | $14.99 | **$0.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/robot-butter/id6759990682/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Paid | — |
| Size | 7 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Christian Thompson](https://appshunter.io/developer/1511795684) | [Noorcon Inc.](https://appshunter.io/developer/656997884) |

## What reviewers say

### 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


### NotePulse

[App page](https://appshunter.io/ios/app/notepulse-midi-visualizer/id6810961670)

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

**In-app purchases:** none


## Frequently asked questions

### Is Robot Butter free?

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

### Is NotePulse free?

NotePulse costs $0.99, with no in-app purchases.

### Do Robot Butter or NotePulse have ads?

Neither Robot Butter nor NotePulse shows ads.

### Which is updated more often, Robot Butter or NotePulse?

Robot Butter ships an update monthly, and NotePulse every 10 days. Most recently, Robot Butter was updated on October 17, 2026 and NotePulse on October 7, 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.*