# Bumbly Synthesizer vs SimplyLowPass

The clearest difference is rating: SimplyLowPass at 5.0 against Bumbly Synthesizer's 3.0. SimplyLowPass also leads on update cadence (every 3 weeks vs every 41 months) and price ($0.99 vs $3.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Bumbly Synthesizer costs $3.99 and SimplyLowPass $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SimplyLowPass holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Bumbly Synthesizer ships an update every 41 months, SimplyLowPass every 3 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Bumbly Synthesizer | SimplyLowPass |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/bumbly-synthesizer/id1475454262/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simplylowpass/id1553314889/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 3 weeks** |
| Monetization | Paid | Paid |
| Size | 105 MB | 5 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [POGPALE Labs Inc.](https://appshunter.io/developer/1475454261) | [Brad Howes](https://appshunter.io/developer/430573224) |

## 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


### SimplyLowPass

[App page](https://appshunter.io/ios/app/simplylowpass/id1553314889)

This app provides a simple yet fast low-pass audio filter. It offers control over cutoff frequency and resonance, functioning as an AUv3 app extension for use in compatible music production hosts. It serves as a delivery mechanism and demonstration for the filter.

**Highlights:** Low-pass audio filter, Cutoff frequency control, Resonance factor control, AUv3 app extension, Compatible with music hosts

**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 SimplyLowPass free?

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

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

SimplyLowPass is rated higher. Bumbly Synthesizer averages 3.0 out of 5 from 1 ratings, while SimplyLowPass averages 5.0 from 1 ratings.

### Do Bumbly Synthesizer or SimplyLowPass have ads?

Neither Bumbly Synthesizer nor SimplyLowPass shows ads.

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

Bumbly Synthesizer ships an update every 41 months, and SimplyLowPass every 3 weeks. Most recently, Bumbly Synthesizer was updated on November 3, 2026 and SimplyLowPass on November 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.*