Key vs Duotts
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Key
This utility app allows users to remotely control and connect to devices, facilitating data transmission and collection. It enables over-the-air upgrades and social sharing, while also displaying meter speeds and reading device information directly from a mobile phone.
- Remote control and connection
- Data transmission and collection
- Over-the-air (OTA) upgrades
- Social sharing capabilities
- Meter speed display
- Device information reading
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1. Remote control and connection 2. Data transmission, collection, OTA upgrade, social sharing 3. The mobile phone APP realizes the display of the meter speed 4. Read device information
Duotts
This app enhances your riding experience with intelligent monitoring of speed and battery. It offers one-click device control, community features to connect with other riders, and detailed recording of your riding data and achievements.
- Real-time speed and battery monitoring
- One-click device operation
- Community interaction and rider connection
- Riding data recording and mileage tracking
- Personalized honors and leaderboards
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Smart Riding, DUOTTS helps you navigate the future. 1. Intelligent Companion: Ensure your rides are always safe and enjoyable. Monitor your bike's speed and battery level in real-time, completely controlling your travel plans. 2. One-Click Operation: Effortlessly control device switches, steering clear of cumbersome button operations. 3. Community Interaction: No more solitary rides. Connect with like-minded enthusiasts through community posts, share experiences, and quickly find riding companions. 4. Riding Data Recording: Keep track of device usage data, effortlessly manage usage time and mileage, and earn personalized honors through leaderboards. Continual updates to provide you with a richer smart riding experience. Build the future, and embark on an intelligent journey with DUOTTS.
Screenshots
Verdict
The clearest difference is rating: Key at 4.0 against Duotts's 1.0. Key also leads on update cadence (every 6 months vs every 16 months) and ratings volume (5 vs 1). 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.
Key holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: Key has 5 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.
Key ships an update every 6 months, Duotts every 16 months. Both last shipped on October 24, 2026.
| Parameter | Key | Duotts |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (5 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 6 months — better | Every 16 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 266 MB | 258 MB |
| Age rating | 4+ | 4+ |
| Developer | Tianjin Key-Disp Technology Co.,Ltd | Shenzhen Yiwoke Technology Co., Ltd |
Customer experience
Key
Duotts
In-app purchases
Key
No in-app purchases
Duotts
No in-app purchases
