# ProofLink vs SmileClock

The clearest difference is in-app purchases: ProofLink at none against SmileClock's 3. ProofLink also leads on iOS requirement (15 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SmileClock sells 3 in-app purchases, starting at $1.99 per month. ProofLink asks for nothing beyond the download.

ProofLink ships an update every 5 days, SmileClock every 3 days. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ProofLink | SmileClock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Size | 41 MB | 13 MB |
| Requires iOS | **15** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mashang Traceability (Shanghai) Technology Co., Ltd.](https://appshunter.io/developer/1825050994) | [Hangzhou Miqi Guangzhi Technology Co., Ltd.](https://appshunter.io/developer/6776113280) |

## What reviewers say

### ProofLink

[App page](https://appshunter.io/ios/app/prooflink/id6748296486)

**Features:** macOS Compatibility

**In-app purchases:** none


### SmileClock

[App page](https://appshunter.io/ios/app/smileclock/id6792616575)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro monthly | $1.99 | per month |
| Pro Yearly | $6.99 | per year |
| Pro Lifetime | $7.99 | one-time |


## Frequently asked questions

### Is ProofLink free?

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

### Is SmileClock free?

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

### Do ProofLink or SmileClock have ads?

Neither ProofLink nor SmileClock shows ads.

### Which is updated more often, ProofLink or SmileClock?

ProofLink ships an update every 5 days, and SmileClock every 3 days. Most recently, ProofLink was updated on October 6, 2026 and SmileClock on October 13, 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.*