# Fractal Bits vs Hilda Synthesizer

The clearest difference is price: Fractal Bits at $1.99 against Hilda Synthesizer's $12.99. Hilda Synthesizer's advantage is update cadence (every 9 days vs every 5 months). On rating, review sentiment, ratings volume and ads there is nothing between them.

Fractal Bits costs $1.99 and Hilda Synthesizer $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for Fractal Bits against 4.9 for Hilda Synthesizer. Both are backed by a comparable volume of ratings — 82 and 58 respectively. Written reviews split almost evenly too, at 91% and 90% positive.

Fractal Bits ships an update every 5 months, Hilda Synthesizer every 9 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Fractal Bits | Hilda Synthesizer |
| --- | --- | --- |
| Price | **$1.99** | $12.99 |
| Rating | [4.9 (82 ratings)](https://appshunter.io/ios/app/fractal-bits/id1482725385/reviews) | **[4.9 (58 ratings)](https://appshunter.io/ios/app/hilda-synthesizer/id6447191659/reviews)** |
| Number of ratings | **82** | 58 |
| Positive reviews | **90.7% of reviews** | 90.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Paid | Paid |
| Size | 7 MB | 6 MB |
| Requires iOS | 12.0 | 12 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexander Zolotov](https://appshunter.io/developer/324462547) | [Bram Bos](https://appshunter.io/developer/325340444) |

## What reviewers say

### Fractal Bits

[App page](https://appshunter.io/ios/app/fractal-bits/id1482725385)

Generate an infinite variety of drum sounds using fractal algorithms. Save and share your unique sound sets via text codes. Perform live with multiple keyboard options and record your creations in real-time.

**Highlights:** Infinite unique drum sounds, Save/share sound sets via text codes, Multiple live drumming keyboards, MIDI control and mapping, Real-time WAV audio recording, Wi-Fi export/import

**Features:** macOS Compatibility

**In-app purchases:** none


### Hilda Synthesizer

[App page](https://appshunter.io/ios/app/hilda-synthesizer/id6447191659)

This app offers a complex oscillator monosynth with a blend of west-coast and east-coast synthesis techniques. It features a wave folder, lowpass gate, 12-mode filter, and VCA circuit, all meticulously circuit-modelled for authentic analog or digital sound. It functions as a playable synth, MIDI sequencer, and audio effect.

**Highlights:** Complex Oscillator Monosynth, Wave folder and lowpass gate, 12-mode filter, Circuit-modelled analog sound, Built-in 16-step MIDI Sequencer, Audio effect for external audio, AUv3 compatibility

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fractal Bits free?

Fractal Bits costs $1.99, with no in-app purchases.

### Is Hilda Synthesizer free?

Hilda Synthesizer costs $12.99, with no in-app purchases.

### Which has better reviews, Fractal Bits or Hilda Synthesizer?

Hilda Synthesizer is rated higher. Fractal Bits averages 4.9 out of 5 from 82 ratings, while Hilda Synthesizer averages 4.9 from 58 ratings.

### Do Fractal Bits or Hilda Synthesizer have ads?

Neither Fractal Bits nor Hilda Synthesizer shows ads.

### Which is updated more often, Fractal Bits or Hilda Synthesizer?

Fractal Bits ships an update every 5 months, and Hilda Synthesizer every 9 days. Most recently, Fractal Bits was updated on November 3, 2026 and Hilda Synthesizer on November 3, 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.*