# K vs Letianpai

The clearest difference is rating: K at 2.8 against Letianpai's 1.0. K also leads on ratings volume (10 vs 1) and device support (3 vs 1). Letianpai's advantage is update cadence (every 3 weeks vs every 2 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

K holds the better App Store score, 2.8 against 1.0. That said, the two scores are not equally well evidenced: K has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

K ships an update every 2 months, Letianpai every 3 weeks. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | K | Letianpai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (10 ratings)](https://appshunter.io/ios/app/k-one/id1540026334/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/letianpai/id6502999694/reviews) |
| Number of ratings | **10** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 181 MB | 76 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Robosen Robotics (ShenZhen) Co., Ltd.](https://appshunter.io/developer/1459364206) | [北京人和家科技有限公司](https://appshunter.io/developer/1698843685) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-one/id1540026334)

Control a remote-controlled robot to perform various actions like walking, dancing, and stunts. Program custom dance routines using manual or block-based methods for educational and entertainment purposes.

**Highlights:** Remote robot control, Perform stunts and dance moves, Manual programming, Block-based programming, Program dance routines

**Features:** macOS Compatibility

**In-app purchases:** none


### Letianpai

[App page](https://appshunter.io/ios/app/letianpai/id6502999694)

Control robots and integrate various sensors with this utility application. It allows for advanced customization and interaction with robotic hardware.

**Highlights:** Robot control, Sensor integration, Hardware interaction, Customization options

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is K free?

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

### Is Letianpai free?

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

### Which has better reviews, K or Letianpai?

K is rated higher. K averages 2.8 out of 5 from 10 ratings, while Letianpai averages 1.0 from 1 ratings.

### Do K or Letianpai have ads?

Neither K nor Letianpai shows ads.

### Which is updated more often, K or Letianpai?

K ships an update every 2 months, and Letianpai every 3 weeks. Most recently, K was updated on October 24, 2026 and Letianpai on October 12, 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.*