# 51SMT vs AshtonBOX

The clearest difference is in-app purchases: AshtonBOX at none against 51SMT's 3. 51SMT's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

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

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 51SMT | AshtonBOX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 55 MB | 251 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHENZHEN 51 SURFACE MOUNTING TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1470013387) | [Flydiagram](https://appshunter.io/developer/1516995661) |

## 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 |


### AshtonBOX

[App page](https://appshunter.io/ios/app/ashtonbox/id1537525072)

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

**In-app purchases:** none


## Frequently asked questions

### Is 51SMT free?

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

### Is AshtonBOX free?

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

### Do 51SMT or AshtonBOX have ads?

Neither 51SMT nor AshtonBOX shows ads.

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

51SMT ships an update every 3 weeks, and AshtonBOX every 3 weeks. Most recently, 51SMT was updated on November 3, 2026 and AshtonBOX on November 3, 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.*