# RfidAPP vs SleepWarning

The clearest difference is in-app purchases: RfidAPP at none against SleepWarning's 1. SleepWarning's advantage is update cadence (every 4 days vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SleepWarning sells 1 one-off in-app purchase. RfidAPP asks for nothing beyond the download.

RfidAPP ships an update every 9 days, SleepWarning every 4 days. The most recent releases landed on September 19, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | RfidAPP | SleepWarning |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 18 MB | 7 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Artem Wilhelmi](https://appshunter.io/developer/1815561567) | [Tilo Greiner](https://appshunter.io/developer/1740838965) |

## What reviewers say

### RfidAPP

[App page](https://appshunter.io/ios/app/rfidapp/id6746169746)

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

**In-app purchases:** none


### SleepWarning

[App page](https://appshunter.io/ios/app/sleepwarning/id6758070039)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SleepWarning | $1.99 | one-time |


## Frequently asked questions

### Is RfidAPP free?

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

### Is SleepWarning free?

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

### Do RfidAPP or SleepWarning have ads?

Neither RfidAPP nor SleepWarning shows ads.

### Which is updated more often, RfidAPP or SleepWarning?

RfidAPP ships an update every 9 days, and SleepWarning every 4 days. Most recently, RfidAPP was updated on September 19, 2026 and SleepWarning on October 4, 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.*