# subflow vs Grating Simulator

subflow and Grating Simulator are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

subflow ships an update every 6 days, Grating Simulator every 5 days. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | subflow | Grating Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (17 ratings)](https://appshunter.io/ios/app/subflow/id1570176211/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 5 days** |
| Monetization | Free | — |
| Size | 3 MB | 1 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | **iPhone, iPad, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ello Skelling Productions](https://appshunter.io/developer/1569508906) | [Mark Barclay](https://appshunter.io/developer/1779667710) |

## What reviewers say

### subflow

[App page](https://appshunter.io/ios/app/subflow/id1570176211)

Create dynamic music visualizations for any setting. Control modes, speed, and beat patterns with intuitive screen gestures. Advanced users can leverage UDP and OS2L for complex control with DJ software.

**Highlights:** Gesture-based control for modes, speed, and beats, Beat pattern customization, UDP command sequencing, OS2L integration with DJ software, Color customization via long press

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

**In-app purchases:** none


### Grating Simulator

[App page](https://appshunter.io/ios/app/grating-simulator/id6759843063)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is subflow free?

subflow is free to download, with no in-app purchases.

### Is Grating Simulator free?

Grating Simulator is free to download, with no in-app purchases.

### Do subflow or Grating Simulator have ads?

Neither subflow nor Grating Simulator shows ads.

### Which is updated more often, subflow or Grating Simulator?

subflow ships an update every 6 days, and Grating Simulator every 5 days. Most recently, subflow was updated on September 9, 2026 and Grating Simulator on September 13, 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.*