# OnOff for NFC Drives vs smark lock

OnOff for NFC Drives and smark lock are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

OnOff for NFC Drives ships an update every 3 months, smark lock every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OnOff for NFC Drives | smark lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onoff-for-nfc-drives/id6446581764/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | — |
| Size | 13 MB | 40 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [LIANG HSIN CHEN](https://appshunter.io/developer/1678272117) | [震 王](https://appshunter.io/developer/1734329851) |

## What reviewers say

### OnOff for NFC Drives

[App page](https://appshunter.io/ios/app/onoff-for-nfc-drives/id6446581764)

Securely lock and unlock USB drives with a simple tap of your NFC-enabled smartphone. Protect your data on the go with this easy-to-use utility, offering custom profiles and broad USB drive compatibility.

**Highlights:** NFC drive locking and unlocking, Data security on the go, Customizable drive profiles, User-friendly interface, Wide USB drive compatibility, Lightweight and no extra hardware needed

**In-app purchases:** none


### smark lock

[App page](https://appshunter.io/ios/app/smark-lock/id6752854176)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OnOff for NFC Drives free?

OnOff for NFC Drives is free to download, with no in-app purchases.

### Is smark lock free?

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

### Do OnOff for NFC Drives or smark lock have ads?

Neither OnOff for NFC Drives nor smark lock shows ads.

### Which is updated more often, OnOff for NFC Drives or smark lock?

OnOff for NFC Drives ships an update every 3 months, and smark lock every 4 months. Most recently, OnOff for NFC Drives was updated on November 3, 2026 and smark lock on October 30, 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.*