# Gradient Synth vs Relic Flow

The clearest difference is price: Gradient Synth at Free against Relic Flow's $1.99. Gradient Synth also leads on update cadence (monthly vs every 17 months). Relic Flow's advantage is in-app purchases (none vs 5) and review sentiment (93% vs 63%). On ratings volume, ads and device support there is nothing between them.

Gradient Synth is free to download; Relic Flow costs $1.99 up front. Gradient Synth sells 5 in-app purchases, starting at $9.99 per year. Relic Flow asks for nothing beyond the download.

Relic Flow holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 54 and 26 respectively. Written reviews point the same way: 63% of Gradient Synth's written reviews are positive against 93% of Relic Flow's.

Gradient Synth ships an update monthly, Relic Flow every 17 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Gradient Synth | Relic Flow |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.4 (54 ratings)](https://appshunter.io/ios/app/gradient-synth/id6477543878/reviews) | **[4.8 (26 ratings)](https://appshunter.io/ios/app/relic-flow/id6499490810/reviews)** |
| Number of ratings | **54** | 26 |
| Positive reviews | 62.5% of reviews | **93.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 17 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 12 MB | 6 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Apps Are Fun LLC](https://appshunter.io/developer/1659934806) | [Alexander Zolotov](https://appshunter.io/developer/324462547) |

## What reviewers say

### Gradient Synth

[App page](https://appshunter.io/ios/app/gradient-synth/id6477543878)

Transform colors into unique sounds with this intuitive music creation app. Designed for beginners and children, it offers a user-friendly interface and powerful features to explore and customize a wide range of audio experiences.

**Highlights:** Preset Generator, Color-based sound customization, User-friendly interface, MIDI keyboard integration, Dynamic audio effects, Polyphony

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gradient Synth Supporter (Yearly) | $9.99 | per year |
| Unlimited Presets | $19.99 | per year |
| 10 Presets | $0.99 | one-time |
| 75 Presets | $4.99 | one-time |
| Lifetime Unlock | $12.99 | one-time |


### Relic Flow

[App page](https://appshunter.io/ios/app/relic-flow/id6499490810)

Generate unique Lo-Fi rhythms, noise patterns, and drum loops using advanced synthesis algorithms. Explore billions of sound samples with intuitive controls and real-time audio recording. Perfect for musicians and sound designers seeking endless creative possibilities.

**Highlights:** Lo-Fi rhythm and drum loop generation, Billions of unique sound samples, Real-time audio recording to WAV, Multiple input methods (on-screen, PC keyboard, MIDI), Export to WAV, SunVox, and text clipboard, iOS Audio Unit Extension (AUv3) support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gradient Synth free?

Gradient Synth is free to download, with in-app purchases available.

### Is Relic Flow free?

Relic Flow costs $1.99, with no in-app purchases.

### Which has better reviews, Gradient Synth or Relic Flow?

Relic Flow is rated higher. Gradient Synth averages 4.4 out of 5 from 54 ratings, while Relic Flow averages 4.8 from 26 ratings.

### Do Gradient Synth or Relic Flow have ads?

Neither Gradient Synth nor Relic Flow shows ads.

### Which is updated more often, Gradient Synth or Relic Flow?

Gradient Synth ships an update monthly, and Relic Flow every 17 months. Most recently, Gradient Synth was updated on September 18, 2026 and Relic Flow on September 17, 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.*