# GridInstrument vs Relic Flow

The clearest difference is update cadence: GridInstrument at weekly against Relic Flow's every 17 months. GridInstrument also leads on iOS requirement (8.0 vs 12.0). Relic Flow's advantage is rating (4.9 vs 4.5) and review sentiment (93% vs 83%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

GridInstrument costs $3.99 and Relic Flow $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Relic Flow holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 11 and 28 respectively. Written reviews point the same way: 83% of GridInstrument's written reviews are positive against 93% of Relic Flow's.

GridInstrument ships an update weekly, Relic Flow every 17 months. Both last shipped on October 21, 2026.

## The numbers

| Metric | GridInstrument | Relic Flow |
| --- | --- | --- |
| Price | $3.99 | **$1.99** |
| Rating | [4.5 (11 ratings)](https://appshunter.io/ios/app/gridinstrument/id1296511558/reviews) | **[4.9 (28 ratings)](https://appshunter.io/ios/app/relic-flow/id6499490810/reviews)** |
| Number of ratings | 11 | **28** |
| Positive reviews | 83.3% of reviews | **93.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 15 MB | 6 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Decidedly, LLC](https://appshunter.io/developer/783782943) | [Alexander Zolotov](https://appshunter.io/developer/324462547) |

## What reviewers say

### GridInstrument

[App page](https://appshunter.io/ios/app/gridinstrument/id1296511558)

This app transforms your iOS device into a unique musical instrument with a grid-based interface. Explore over 20 musical modes and various grid layouts. It also supports external MIDI controllers like the Launchpad for expanded creative possibilities.

**Highlights:** Grid-based note arrangement, Launchpad integration, Over 20 musical modes, Multiple grid layouts, Core MIDI out, Audiobus 3 MIDI support

**Features:** Vision Pro support

**In-app purchases:** none


### 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 GridInstrument free?

GridInstrument costs $3.99, with no in-app purchases.

### Is Relic Flow free?

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

### Which has better reviews, GridInstrument or Relic Flow?

Relic Flow is rated higher. GridInstrument averages 4.5 out of 5 from 11 ratings, while Relic Flow averages 4.9 from 28 ratings.

### Do GridInstrument or Relic Flow have ads?

Neither GridInstrument nor Relic Flow shows ads.

### Which is updated more often, GridInstrument or Relic Flow?

GridInstrument ships an update weekly, and Relic Flow every 17 months. Most recently, GridInstrument was updated on October 21, 2026 and Relic Flow on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*