K vs Letianpai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
K
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.
- Remote robot control
- Perform stunts and dance moves
- Manual programming
- Block-based programming
- Program dance routines
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1. Remote-control Interstellar Scout to walk, perform stunts and dance moves, etc. 2. Program dance routines for Interstellar Scout through manual programming and block-based programming. Interstellar Scout is an educational series of products from Robosen, designed to bring a wealth of educational and entertainment content to everyone.
Letianpai
Control robots and integrate various sensors with this utility application. It allows for advanced customization and interaction with robotic hardware.
- Robot control
- Sensor integration
- Hardware interaction
- Customization options
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The Letianpai APP can control the robot and add sensors.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 June 3, 2026 and May 27, 2026 respectively.
| Parameter | K | Letianpai |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (10 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 181 MB | 76 MB |
| Age rating | 4+ | 17+ |
| Developer | Robosen Robotics | 北京人和家科技有限公司 |
Customer experience
K
Letianpai
In-app purchases
K
No in-app purchases
Letianpai
No in-app purchases
