KIE OS vs Kieslect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KIE OS
This app syncs with a compatible smartwatch to display your heart rate and activity data. Set reminders, alarms, and customize watch faces. It also integrates with HealthKit for seamless data sharing.
- Syncs SMS and call data
- Records and displays heart rate data
- Tracks steps, stride, and distance
- Set reminders and alarms
- HealthKit integration
- Customizable watch faces
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KIE OS app is a supporting application for smart watches. Main function: 1. This app is a supporting application of the smart watch, and will use related permissions such as SMS and phone calls. After the user agrees, it will send the monitored SMS and phone-related information to the smart watch through Bluetooth, bringing convenience to the user. experience 2. Record the heart rate data collected by the smart watch, and display it in the form of a line graph and a histogram according to the heart rate data; 3. Record the sports data collected by the smart watch, including the number of steps, stride frequency and distance, and display them in the form of line graphs and histograms; 4. Set reminders and alarms for your smart watch. App Features: 1. Detailed data help you exercise more rationally and scientifically; 2. Exercise and sleep goals encourage yourself to exercise every day and live a healthy life; 3. Support the sharing of healthy exercise information; 4. Massive dials and custom dials, interesting and individual. 【HealthKit】 - Synchronize with motion data in healthkit.You can automatically synchronize the exercise data recorded in KIE OS to HealthKit. 【Contact us】 - Company name: Shanghai Wenchang Technology Co.,Ltd - Official website: https://www.kieslect.com - Contact email: help@kieslect.com 【Warm tips】 - The KIE OS application supports only iOS 9.0 or later. - KIE OS must be used together with Watch Zs smart watch. The application alone cannot play all its features
Kieslect
This app supports smartwatches by syncing SMS, call information, and health data like heart rate and steps. It helps users set reminders, alarms, and track fitness goals with detailed data visualization. Users can also customize watch faces and share their progress.
- Syncs SMS and call notifications
- Records heart rate and sports data
- Visualizes data with graphs
- Sets reminders and alarms
- Tracks exercise and sleep goals
- Customizable watch faces
- HealthKit integration
Read full descriptionHide full description
Kieslect app is a supporting application for smart watches. Main function: 1. This app is a supporting application of the smart watch, and will use related permissions such as SMS and phone calls. After the user agrees, it will send the monitored SMS and phone-related information to the smart watch through Bluetooth, bringing convenience to the user. experience 2. Record the heart rate data collected by the smart watch, and display it in the form of a line graph and a histogram according to the heart rate data; 3. Record the sports data collected by the smart watch, including the number of steps, stride frequency and distance, and display them in the form of line graphs and histograms; 4. Set reminders and alarms for your smart watch. App Features: 1. Detailed data help you exercise more rationally and scientifically; 2. Exercise and sleep goals encourage yourself to exercise every day and live a healthy life; 3. Support the sharing of healthy exercise information; 4. Massive dials and custom dials, interesting and individual. 【HealthKit】 - Synchronize with motion data in healthkit.You can automatically synchronize the exercise data recorded in Kieslect to HealthKit. 【Contact us】 - Company name: Shanghai Kieslect Technology Company Limited - Official website: https://www.kieslect.com - Contact email: help@kieslect.com 【Warm tips】 - The Kieslect application supports only iOS 9.0 or later. - Kieslect must be used together with smart watch. The application alone cannot play all its features
Screenshots
Verdict
The clearest difference is rating: Kieslect at 3.5 against KIE OS's 2.8. Kieslect also leads on update cadence (every 8 days vs every 3 weeks). On price, review sentiment, ratings volume and ads 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.
Kieslect holds the better App Store score, 3.5 against 2.8. Both are backed by a comparable volume of ratings — 26 and 11 respectively. Written reviews split almost evenly too, at 33% and 33% positive.
KIE OS ships an update every 3 weeks, Kieslect every 8 days. The most recent releases landed on June 1, 2026 and September 12, 2026 respectively.
| Parameter | KIE OS | Kieslect |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (26 ratings) | 3.5 (11 ratings) — better |
| Positive reviews | 33.3% of reviews | 33.3% of reviews |
| Number of ratings | 26 — better | 11 |
| Update frequency | Every 3 weeks | Every 8 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 | 9.0 |
| Further details — not scored | ||
| Size | 198 MB | 352 MB |
| Age rating | 4+ | 4+ |
| Developer | 展传 彭 | 上海凯斯领拓技术有限公司 |
Customer experience
KIE OS
Kieslect
In-app purchases
KIE OS
No in-app purchases
Kieslect
No in-app purchases
