# 51SMT vs TKLingo

The clearest difference is update cadence: TKLingo at daily against 51SMT's every 3 weeks. 51SMT's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 51SMT sells 3 one-off in-app purchases and TKLingo sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

51SMT ships an update every 3 weeks, TKLingo daily. The most recent releases landed on October 15, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | 51SMT | TKLingo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 55 MB | 28 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHENZHEN 51 SURFACE MOUNTING TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1470013387) | [Shanghai PalmZen Wireless Technology Co.,Ltd](https://appshunter.io/developer/441512718) |

## 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 |


### TKLingo

[App page](https://appshunter.io/ios/app/tklingo/id6796593924)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 直播翻译时长300分钟 | $0.29 | one-time |
| 直播翻译时长60分钟 | $2.99 | one-time |
| 直播翻译时长720分钟 | $29.99 | one-time |
| 直播翻译时长9000分钟 | $299.99 | one-time |


## Frequently asked questions

### Is 51SMT free?

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

### Is TKLingo free?

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

### Do 51SMT or TKLingo have ads?

Neither 51SMT nor TKLingo shows ads.

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

51SMT ships an update every 3 weeks, and TKLingo daily. Most recently, 51SMT was updated on October 15, 2026 and TKLingo on October 26, 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.*