MTK Fitting vs Wellion SiDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MTK Fitting
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Main features: - Once connected with the device, users can make changes to the personalized settings, such as call alerts, intelligent alarm clock, sedentary reminder, daily step goal, and etc. - Track your exercise like cycling, running and so on, so that you can have more insights on your exercise data; - Exercise data can be synchronized to Apple Health. Gentle Reminder: - Supporting Apple Health, exercise data can be synchronized to Apple Health after authorization - Keeping GPS running in the background may reduce your battery life
Wellion SiDiary
Easily log diabetes-related data like blood glucose, blood pressure, and medications on your iPhone. Syncs with compatible devices and the PC version for comprehensive therapy analysis with your healthcare professional.
- Diabetes logbook (glucose, BP, meds)
- Bluetooth data transfer from compatible devices
- Synchronization with PC version and online
- Extensive statistics and trend analysis
- Customizable data entry and display
- Multiple unit and format options
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With the Wellion SiDiary app for iPhone, you can easily keep your diabetes logbook (blood glucose levels, blood pressure, medications, carbohydrates, etc.) as you are already used to doing with our PC version. Together with your healthcare professional, you can then analyze the collected data to further improve your therapy. The Wellion SiDiary App for iPhone provides you with - easiest transfer of all data directly with your bluetooth enabled Wellion product (see list below) - fast synchronization of the data with Wellion SiDiary Online and your Wellion product. From there you can print the data independently of the operating system or further synchronize with your PC version - all data can also be entered in a scrollable input mask via the numeric keyboard - clear display of daily data - extensive statistics graphics (pie chart, history curve, standard day and detailed statistics) - Trend analysis (How has the treatment developed in the last X days/weeks/months?) - User-defined data types that you have created on the PC can also be used on the iPhone after synchronization with Wellion SiDiary Online - Blood glucose values can be entered in mg/dl or mmol/l - Weight input in kg or lbs - Carbohydrates in grams or any exchange unit (BE/KE, etc.) - Date format dd.mm or mm-dd - Time format 24h or am/pm - Unnecessary lines can be hidden The iPhone version can be used independently from the PC, but it can also complement the PC version, e.g. by reading out your Wellion product on the PC and only writing down additional data on the iPhone. Via a synchronization with Wellion SiDiary Online, all these data are then merged into a comprehensive diary. Since you decide when and if the data should be synchronized with Wellion SiDiary Online, you always have full control over the program and possible online costs during the data transfer. Compatible meters: Transmission directly via Bluetooth to the app - Wellion GALILEO GLU/KET BTE - Wellion LEONARDO GLU/KET BTE - Wellion NEWTON GDH-FAD BTE Transfer via PC version/cable to the app - Wellion CALLA Dialog - Wellion CALLA Light - Wellion CALLA Mini - Wellion GALILEO Compact - Wellion GALILEO GLU/CHOL - Wellion GALILEO GLU/KET - Wellion LUNA Duo - Wellion LUNA Trio
Screenshots
Verdict
The clearest difference is update cadence: MTK Fitting at every 3 weeks against Wellion SiDiary's every 27 months. MTK Fitting also leads on iOS requirement (9.0 vs 12.1). On price, ads, in-app purchases and device support 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.
MTK Fitting ships an update every 3 weeks, Wellion SiDiary every 27 months. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.
| Parameter | MTK Fitting | Wellion SiDiary |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks — better | Every 27 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 58 MB | 23 MB |
| Age rating | 4+ | 17+ |
| Developer | Qian Zhang | Sinovo Ltd. & Co. KG |
In-app purchases
MTK Fitting
No in-app purchases
Wellion SiDiary
No in-app purchases







