# FLEX SIGN Anode vs Flappy Board

The clearest difference is in-app purchases: FLEX SIGN Anode at none against Flappy Board's 1. FLEX SIGN Anode also leads on iOS requirement (15.6 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flappy Board sells 1 one-off in-app purchase. FLEX SIGN Anode asks for nothing beyond the download.

FLEX SIGN Anode ships an update fortnightly, Flappy Board weekly. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | FLEX SIGN Anode | Flappy Board |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Size | 15 MB | 11 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [德林 王](https://appshunter.io/developer/1242743184) | [General Futurics LLC](https://appshunter.io/developer/560612440) |

## What reviewers say

### FLEX SIGN Anode

[App page](https://appshunter.io/ios/app/flex-sign-anode/id1474597528)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flappy Board

[App page](https://appshunter.io/ios/app/flappy-board-split-flap-board/id6762232395)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Amateur | $5.99 | one-time |


## Frequently asked questions

### Is FLEX SIGN Anode free?

FLEX SIGN Anode is free to download, with no in-app purchases.

### Is Flappy Board free?

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

### Do FLEX SIGN Anode or Flappy Board have ads?

Neither FLEX SIGN Anode nor Flappy Board shows ads.

### Which is updated more often, FLEX SIGN Anode or Flappy Board?

FLEX SIGN Anode ships an update fortnightly, and Flappy Board weekly. Most recently, FLEX SIGN Anode was updated on September 10, 2026 and Flappy Board on September 19, 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.*