# 51SMT vs DataDome

The clearest difference is in-app purchases: DataDome at none against 51SMT's 3. 51SMT's advantage is update cadence (every 3 weeks vs every 4 months) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. 51SMT sells 3 one-off in-app purchases. DataDome asks for nothing beyond the download.

51SMT ships an update every 3 weeks, DataDome every 4 months. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 51SMT | DataDome |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 55 MB | 10 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SHENZHEN 51 SURFACE MOUNTING TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1470013387) | [DataDome](https://appshunter.io/developer/1479044587) |

## What reviewers say

### 51SMT

[App page](https://appshunter.io/ios/app/51smt/id1470013388)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $0.99 | one-time |
| 月会员 | $0.99 | one-time |
| 季度会员 | $2.99 | one-time |


### DataDome

[App page](https://appshunter.io/ios/app/datadome/id1492490972)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 51SMT free?

51SMT is free to download, with in-app purchases available.

### Is DataDome free?

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

### Do 51SMT or DataDome have ads?

Neither 51SMT nor DataDome shows ads.

### Which is updated more often, 51SMT or DataDome?

51SMT ships an update every 3 weeks, and DataDome every 4 months. Most recently, 51SMT was updated on October 15, 2026 and DataDome on October 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.*