Tandem t vs Catchtrial ePro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tandem t
This app acts as a smartphone companion for a specific insulin pump, allowing users to deliver insulin doses and view pump data remotely. It provides discreet access to essential information and notifications, enhancing convenience for pump users.
- Deliver bolus from smartphone
- Discreet secondary pump display
- View pump data and notifications
- Wirelessly upload therapy data
- Smartphone language support
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The Tandem t:slim mobile app, the companion app for your pump. Always consult a healthcare professional for information about how to manage diabetes. - Deliver a bolus from your smartphone* - Serves as a discreet, secondary display for the pump† - View pump data and receive push notifications directly on your smartphone‡ - Wirelessly upload pump therapy data to the cloud† Note: Units of measure on app may differ from those pictured above. Mobile app units of measure will match the paired t:slim X2 insulin pump. ALWAYS READ THE LABEL AND FOLLOW THE DIRECTIONS FOR USE. The electronic instructions for use for the Tandem t:slim mobile app (Basic UDI-DI: 0850018992TF-0011603KR) can be accessed through the t:slim X2 user guide, available here: https://www.tandemdiabetes.com/support/resources/documents. Upon request, a printed copy of the user guide can be provided within 7 days at no additional cost. If the language set on your smartphone is supported by the mobile app, then the mobile app will display in that language. If the language set on your smartphone is not supported by the mobile app, then the mobile app will display in English. *Requires a t:slim X2 insulin pump from Tandem Diabetes Care and a compatible smartphone. Additional restrictions apply. Refer to the user guide for t:slim X2 insulin pump for a list of warnings and precautions. †The information on the Tandem t:slim mobile app display may not be identical to the current status of your pump. Wireless uploads from the Tandem t:slim mobile app to the cloud-based Tandem Source platform require a compatible phone and an internet or wireless data connection. Uploads to the Tandem Source platform do not take place in real time and should not be relied upon by healthcare providers, pump users, or caregivers for remote patient monitoring. Standard carrier data rates may apply. ‡You cannot dismiss alerts and alarms from the app and must do so on the pump itself, but once an alert or alarm has been dismissed on the pump it will also disappear from the mobile app.
Catchtrial ePro
This app allows clinical trial participants to conveniently report their data from home using their smartphone or tablet. It provides timely surveys and diaries through an easy-to-use interface, ensuring data accuracy and secure transmission to clinical trial databases.
- Home-based data reporting
- Timely surveys and diaries
- Step-by-step questionnaire interface
- Secure data transmission
- Offline data collection
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Catchtrial ePro is the Meditrial solution for clinical trial patients to report their own clinical trial data by using their smartphones or tablets, while enjoying the comfort and leisure of their homes. Catchtrial ePro shows surveys and clinical diaries to be filled just at the right time. Its approachable step-by-step questionnaire interface is the most convenient and effective way to keep patients clinical trial data up to date. Tightly integrated with Catchtrial EDC and the Medigen Suite products, Catchtrial ePro will take care of your clinical data and ensure that it will reach the clinical trial database, even if your Internet connection is not always reliable.
Screenshots
Verdict
The clearest difference is rating: Catchtrial ePro at 5.0 against Tandem t's 3.1. Catchtrial ePro also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). Tandem t's advantage is ratings volume (2.2K vs 1). On price, update cadence, 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.
Catchtrial ePro holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Tandem t has 2.2K ratings behind it against 1, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Tandem t | Catchtrial ePro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (2.2K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 36.7% of reviews | — |
| Number of ratings | 2.2K — better | 1 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 157 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Tandem Diabetes Care, Inc. | Meditrial Europe Ltd |
Customer experience
Tandem t
Catchtrial ePro
Bugs and requests
Tandem t
Reported bugs
4 issues- App crashes on launch
- Pump battery draining rapidly
- Glucose data not syncing properly
- Repeated connection losses
Requested features
5 requests- Add extended bolus capability
- Allow clearing of pump alarms from app
- Integrate with Apple Health/Watch
- Expand data history and customization
- Improve app stability and reliability
Catchtrial ePro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tandem t
No in-app purchases
Catchtrial ePro
No in-app purchases
