I had the opportunity to test the SYAI Tag sensor. As a new player on the CGM market, I was really excited to see what it could offer compared to the more established options.
The first thing I noticed is how small it is – about the same size as a Libre sensor. The insertion applicator, on the other hand, is quite large, and I really hope the plastic is recyclable, since environmental sustainability is becoming an important aspect of medical technology.
Basic Information
The sensor lasts for 14 days, has only a 30-minute warm-up period, and is fully controlled via the Syai app for Android or iOS. Unlike some other CGMs, there’s no dedicated reader – everything runs on your smartphone, which honestly makes sense in 2025, as separate CGM readers are becoming outdated.
The app itself deserves some special attention. I’ve tried many different CGM apps, and there was always something missing.
The Syai app includes all the features you would expect – and more. Artificial intelligence is already built into the app, and there are options for integration with other diabetes tracking apps, smartwatches, and even DIY closed-loop systems. Everything comes ready to use straight out of the box 😊
Credit goes to the engineers – the Syai CGM comes from Singapore, and you can tell from the design and functionality that it was developed with precision and attention to detail.
Insertion and Use
Inserting the Syai sensor is straightforward, with no issues during startup. For accuracy testing, I wore it alongside a Dexcom G7 on the same phone – the G7 connected to an AAPS closed loop, while the Syai ran independently.
I’ve been using DIY closed loop for almost 8 years, and I was impressed by how easily I could switch between the Syai sensor and the G7 with just a few clicks.
After a month of use, I found the Syai sensor to be just as accurate as the Dexcom G7. In fact, the Bluetooth range seemed even better, and the AAPS connection felt more stable.
Comparison of the Syai Tag sensor with a 1€ coin
The sensor also comes with an optional adhesive patch. I used it the first time, skipped it the second time – and in both cases it stayed firmly in place, even after plenty of time spent swimming. There were no issues with peeling edges, something that sometimes happens with other CGMs.
Conclusion
Overall, I’m glad to see the SYAI Tag CGM entering the market, because more competition means more choice for people with diabetes worldwide. In a time when access to diabetes technology can be influenced by global supply chains and politics, having alternatives from different regions is a big advantage.
Author: Rafael Z.
