# CheckOnce vs NFC Utils

The clearest difference is ads: NFC Utils at none against CheckOnce's shown. NFC Utils also leads on update cadence (every 3 days vs every 3 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

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

CheckOnce ships an update every 3 months, NFC Utils every 3 days. The most recent releases landed on October 31, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | CheckOnce | NFC Utils |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 8 MB | 31 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [文睿 李](https://appshunter.io/developer/372593992) | [The NFC Mint LLC](https://appshunter.io/developer/725418088) |

## What reviewers say

### CheckOnce

[App page](https://appshunter.io/ios/app/checkonce-yes-or-no/id6757259451)

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

**In-app purchases:** none


### NFC Utils

[App page](https://appshunter.io/ios/app/nfc-utils/id6808449018)

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is CheckOnce free?

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

### Is NFC Utils free?

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

### Do CheckOnce or NFC Utils have ads?

CheckOnce shows ads; NFC Utils does not.

### Which is updated more often, CheckOnce or NFC Utils?

CheckOnce ships an update every 3 months, and NFC Utils every 3 days. Most recently, CheckOnce was updated on October 31, 2026 and NFC Utils on November 8, 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.*