# Bumbly Synthesizer vs Keys

The clearest difference is rating: Bumbly Synthesizer at 3.0 against Keys's 1.0. Bumbly Synthesizer also leads on price ($3.99 vs $5.99) and iOS requirement (15.0 vs 17.0). Keys's advantage is update cadence (every 10 months vs every 41 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Bumbly Synthesizer costs $3.99 and Keys $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bumbly Synthesizer holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Bumbly Synthesizer ships an update every 41 months, Keys every 10 months. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bumbly Synthesizer | Keys |
| --- | --- | --- |
| Price | **$3.99** | $5.99 |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/bumbly-synthesizer/id1475454262/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/keys-midi-controller/id1668785508/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 10 months** |
| Monetization | Paid | Paid |
| Size | 105 MB | 17 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [POGPALE Labs Inc.](https://appshunter.io/developer/1475454261) | [LittleCodeShop.com](https://appshunter.io/developer/288684013) |

## What reviewers say

### Bumbly Synthesizer

[App page](https://appshunter.io/ios/app/bumbly-synthesizer/id1475454262)

Create unique sounds by drawing waveforms or using motion controls. This app offers a versatile synthesizer with customizable touch interfaces and a sequencer for composing music.

**Highlights:** Draw custom sound waves, Customizable touch interfaces (ribbon, piano, guitar), Sequencer for drawing music playback, Motion control for sound expression, Wingbeat-inspired sound generation, Adjustable synthesizer parameters

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

**In-app purchases:** none


### Keys

[App page](https://appshunter.io/ios/app/keys-midi-controller/id1668785508)

Turn your mobile device into a versatile MIDI master keyboard. Connect wirelessly to musical instruments and DAWs to control virtual instruments and enhance your music production and live performances.

**Highlights:** Transform device into MIDI master keyboard, Connect to musical devices, Send MIDI notes and CC, Control virtual instruments, MIDI over Bluetooth, Customizable MIDI mapping

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bumbly Synthesizer free?

Bumbly Synthesizer costs $3.99, with no in-app purchases.

### Is Keys free?

Keys costs $5.99, with no in-app purchases.

### Which has better reviews, Bumbly Synthesizer or Keys?

Bumbly Synthesizer is rated higher. Bumbly Synthesizer averages 3.0 out of 5 from 1 ratings, while Keys averages 1.0 from 1 ratings.

### Do Bumbly Synthesizer or Keys have ads?

Neither Bumbly Synthesizer nor Keys shows ads.

### Which is updated more often, Bumbly Synthesizer or Keys?

Bumbly Synthesizer ships an update every 41 months, and Keys every 10 months. Most recently, Bumbly Synthesizer was updated on October 10, 2026 and Keys on October 24, 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.*