Best App for Type 3c Diabetes: What Actually Works in 2026

By Leon Wilkinson, Type 3c diabetes patient and developer  |  Updated June 2026

This article is part of our complete guide to Type 3c diabetes, which covers what it is, its causes, diagnosis and day-to-day management.

Why Type 3c diabetes is harder to track than other types

If you have Type 3c diabetes, you already know the frustration. Your blood sugar after breakfast on Tuesday looks nothing like the same breakfast on Friday. You are managing insulin and enzyme replacement, often with very little guidance on how they interact. And when you search for a tracking app, every result points you to something built for Type 1 or Type 2 users.

That disconnect is not a coincidence. Type 3c is caused by damage to the pancreas rather than autoimmune destruction or insulin resistance, which means the underlying biology is genuinely different. Your exocrine pancreas is also affected, so digestion itself is unpredictable. When absorption varies from one meal to the next depending on how well your enzyme replacement worked, your glucose response will vary too, regardless of how carefully you counted the carbs.

Standard tracking apps are not built for this. They treat every carb gram as if it will be absorbed at the same rate. They have no concept of enzyme replacement. They cannot help you correlate Creon timing with a post-meal spike two hours later.

What mainstream apps get wrong

MySugr is probably the most recommended diabetes app and it is genuinely good for what it does. The logging interface is clean, it connects to some glucometers, and the summary reports are useful for clinic appointments. But it was designed around Type 1 management. There is no PERT field, no way to log enzyme replacement, and no mechanism to link a dose of Creon to what happened to your glucose an hour later. For Type 3c, that missing link is the whole problem.

Glooko is popular in clinical settings because it can pull data from a wide range of CGM and pump devices. It is excellent for sharing data with a diabetes team. But again, the assumption baked into the product is that carb absorption is predictable. For someone with exocrine insufficiency, that assumption fails constantly.

LibreView (Abbott's own platform) shows your sensor glucose data clearly and the time-in-range reporting is genuinely useful. But it is a CGM viewer, not a full logging tool. You cannot log meals, insulin, or PERT doses alongside your glucose readings.

None of these apps are bad. They just were not built for you.

What to look for in a Type 3c tracking app

Before downloading anything, it is worth knowing what actually matters for Type 3c management:

• Meal logging with carbs and fat separately. Fat slows gastric emptying, which affects when glucose rises. Logging both helps you spot patterns that carb-only logging misses.
• Medication and PERT logging. You need to be able to record when you took enzyme replacement relative to your meal, not just that you took it.
• Insulin logging. Both basal and bolus, with timestamps, so you can see how your corrections worked.
• CGM integration. Manual finger-prick logging is fine but if you use a Libre sensor, automatic import saves time and gives you a more complete picture.
• Correlations over time. A single day's data tells you very little. The value is in seeing patterns across weeks: which meal combinations produce spikes, when hypos tend to happen, how pancreatitis episodes affect your baseline.

GlycoTrace: built from a Type 3c diagnosis

I developed GlycoTrace after my own Type 3c diagnosis following pancreatitis. I was managing insulin, Creon, and a CGM with three separate apps and a notes app, and none of them talked to each other. The data I needed to show my diabetes team was scattered across four places.

GlycoTrace puts glucose, insulin, food, and medication in one log. The AI meal assistant estimates macros from a description rather than requiring you to search a food database for every entry, which matters when you are unwell and do not have the energy for careful logging. It connects to LibreLink for automatic glucose import. And the history view lets you look back across any time period to spot what is actually driving your variability.

It is free to download on Android with no paywall on core logging. Advanced insights and AI credits cost £3.99 per month but the fundamental logging, which is what most people need most of the time, costs nothing.

Comparing the options side by side

The bottom line

If you have Type 3c diabetes, the tracking challenge is not just logging glucose. It is understanding why your glucose behaves differently from day to day, and finding the patterns that connect your enzyme replacement, your meals, and your insulin to what happens on the graph. No standard app gives you that view.

GlycoTrace was built to solve exactly that problem. It is free to try and works on any Android phone. If you use a FreeStyle Libre, your sensor readings import automatically.

You can also try the interactive demo in your browser before downloading to see whether the interface suits you.

Frequently asked questions