# Flymon Center vs Grainfall

The clearest difference is in-app purchases: Flymon Center at none against Grainfall's 6. Flymon Center also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Grainfall's advantage is update cadence (fortnightly vs monthly). On price and ads there is nothing between them.

Both are free to download. Grainfall sells 6 one-off in-app purchases. Flymon Center asks for nothing beyond the download.

Flymon Center ships an update monthly, Grainfall fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Flymon Center | Grainfall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (12 ratings)](https://appshunter.io/ios/app/flymon-center/id6749673865/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 17 MB | 17 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Sperry Corporation](https://appshunter.io/developer/1638854467) | [Hrdlicka Apps LLC](https://appshunter.io/developer/1896342974) |

## What reviewers say

### Flymon Center

[App page](https://appshunter.io/ios/app/flymon-center/id6749673865)

This application provides professional positioning assistance for a specific device. It offers features like route regulation, movement settings, and frame updates for a more convenient exploration experience.

**Highlights:** Professional positioning assistance, Route regulation, Movement settings, Frame updates, Easy device connection

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

**In-app purchases:** none


### Grainfall

[App page](https://appshunter.io/ios/app/grainfall/id6773977789)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 25 Coins | $0.99 | one-time |
| Starter Pack — 120 Coins | $1.99 | one-time |
| 90 Coins | $2.99 | one-time |
| Premium Unlock | $3.99 | one-time |
| 175 Coins | $4.99 | one-time |
| 400 Coins | $9.99 | one-time |


## Frequently asked questions

### Is Flymon Center free?

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

### Is Grainfall free?

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

### Do Flymon Center or Grainfall have ads?

Neither Flymon Center nor Grainfall shows ads.

### Which is updated more often, Flymon Center or Grainfall?

Flymon Center ships an update monthly, and Grainfall fortnightly. Most recently, Flymon Center was updated on October 30, 2026 and Grainfall on October 31, 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.*