# sumFX vs Note to Be

The clearest difference is rating: Note to Be at 4.9 against sumFX's 4.4. Note to Be also leads on update cadence (weekly vs every 6 months) and price ($4.99 vs $9.99). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

sumFX costs $9.99 and Note to Be $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Note to Be holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 12 and 7 respectively. Written reviews complicate that: 55% of sumFX's written reviews are positive against 50% of Note to Be's, so the app with the better star average is not the one people write more warmly about.

sumFX ships an update every 6 months, Note to Be weekly. The most recent releases landed on September 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | sumFX | Note to Be |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| Rating | [4.4 (12 ratings)](https://appshunter.io/ios/app/sumfx/id6450494474/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/note-to-be-midi-quantizer/id6596771972/reviews)** |
| Number of ratings | **12** | 7 |
| Positive reviews | **54.5% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 44 MB | 71 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OSC Audio](https://appshunter.io/developer/1693533681) | [Cem Olcay](https://appshunter.io/developer/523633853) |

## What reviewers say

### sumFX

[App page](https://appshunter.io/ios/app/sumfx/id6450494474)

This app is a versatile audio effects processor for musicians. It offers a modular design with multiple high-quality FX modules and customizable slots, allowing for quick creation of unique sounds. Focus on your music with intuitive controls and visual feedback.

**Highlights:** Modular multi-FX processor, 8 high-quality FX modules, 8 FX slots with Wet/Dry control, 2 LFOs per slot, 50+ cross-platform presets, Pre/post waveform view

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

**In-app purchases:** none


### Note to Be

[App page](https://appshunter.io/ios/app/note-to-be-midi-quantizer/id6596771972)

This app offers advanced MIDI quantization for iOS musicians. It allows precise control over note selection, octave flexibility, and MIDI CC integration for crafting harmonious compositions and dynamic live performances. Supports microtonal scales and multi-synth setups.

**Highlights:** Customizable note and octave selection, MIDI CC to note conversion, Multi-synth channel assignment, Live performance toggles, Microtonal scale support (Scala Library), MPE polyphonic playback

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

**In-app purchases:** none


## Frequently asked questions

### Is sumFX free?

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

### Is Note to Be free?

Note to Be costs $4.99, with no in-app purchases.

### Which has better reviews, sumFX or Note to Be?

Note to Be is rated higher. sumFX averages 4.4 out of 5 from 12 ratings, while Note to Be averages 4.9 from 7 ratings.

### Do sumFX or Note to Be have ads?

Neither sumFX nor Note to Be shows ads.

### Which is updated more often, sumFX or Note to Be?

sumFX ships an update every 6 months, and Note to Be weekly. Most recently, sumFX was updated on September 23, 2026 and Note to Be 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.*