# FLEX SIGN Anode vs KEYVOX Check

The clearest difference is update cadence: FLEX SIGN Anode at fortnightly against KEYVOX Check's every 4 months. KEYVOX Check's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

FLEX SIGN Anode ships an update fortnightly, KEYVOX Check every 4 months. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | FLEX SIGN Anode | KEYVOX Check |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Size | 15 MB | 21 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [德林 王](https://appshunter.io/developer/1242743184) | [Blockchain Lock Inc.](https://appshunter.io/developer/1445525151) |

## What reviewers say

### FLEX SIGN Anode

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

**Features:** macOS Compatibility

**In-app purchases:** none


### KEYVOX Check

[App page](https://appshunter.io/ios/app/keyvox-check-in/id1488436331)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FLEX SIGN Anode free?

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

### Is KEYVOX Check free?

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

### Do FLEX SIGN Anode or KEYVOX Check have ads?

Neither FLEX SIGN Anode nor KEYVOX Check shows ads.

### Which is updated more often, FLEX SIGN Anode or KEYVOX Check?

FLEX SIGN Anode ships an update fortnightly, and KEYVOX Check every 4 months. Most recently, FLEX SIGN Anode was updated on September 10, 2026 and KEYVOX Check on September 20, 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.*