The best diabetes apps

updated 2026-08-20

Full disclosure before anything else: we make one of the apps on this list. CarbLens AI is ours, it is marked below, and you should weigh its inclusion accordingly. Everything written about the other apps is based on their own published features and public reputation, and every one of them earned its place — this category is genuinely well-served.

What this list is not: a medical recommendation. The right app depends on your type, your tech (pump or MDI, which CGM), and what actually keeps you engaged. What every app on this list has in common is the thing that matters — none of them replaces your care team, and the good ones say so plainly.

mySugr

The classic diabetes logbook

iOS · Android

The most established logger in the category — quick entries, estimated HbA1c, reports built for handing to your doctor, and meter integration through its parent company Roche.

Best for

People who want a proven, doctor-friendly logbook with years of polish.

Trade-off

Logging is manual-first and the experience is utilitarian — it records your diabetes more than it changes how it feels.

Glucose Buddy

Long-running all-purpose tracker

iOS · Android

Tracks glucose, meds, food, and activity in one place, with a long history and a large user base.

Best for

People who want one general-purpose tracker for everything at once.

Trade-off

Breadth over depth — no meal-to-curve pairing, and the interface shows its age.

One Drop

Tracker plus human coaching

iOS · Android

Pairs tracking with access to human health coaches and predictive insights, plus its own meter hardware ecosystem.

Best for

People who want an accountability relationship with a coach, not just software.

Trade-off

The coaching model means subscription pricing, and the app is broader-wellness flavored than T1-specific.

Glooko

The clinic-side data hub

iOS · Android · Web

Aggregates data from a huge range of meters, CGMs, and pumps into unified reports — often the platform your endo's office already uses.

Best for

Making sure your care team sees everything, whatever hardware you use.

Trade-off

Built for clinical review more than daily engagement — most people open it because their clinic asked.

Carb Manager

The deep food database

iOS · Android · Web

One of the largest food and macro databases anywhere, with barcode scanning, recipes, and meal planning. Keto-rooted but widely used across diabetes.

Best for

People whose main battle is knowing what is in their food, in detail.

Trade-off

It counts your carbs but never sees your glucose — the loop from meal to outcome is yours to close elsewhere.

SNAQ

Photo carb counting, diabetes-first

iOS · Android

Photo-based carb and nutrition estimates designed specifically for diabetes, with CGM overlay so you can review how meals landed.

Best for

People who want camera-first logging with a diabetes lens and clinical polish.

Trade-off

Focused on the food-and-review loop — lighter on the social and motivational layer.

CarbLens AI

Our appSnap the meal, watch the curve — ours

iPhone · Dexcom + FreeStyle Libre

Pairs each meal photo and logged dose with the 3-hour CGM curve that follows, grades the outcome, and stars your proven in-range meals. Wraps the logging habit in friends, battles, streaks, and an AI that reads your patterns — and never suggests doses.

Best for

People with a Dexcom or Libre who learn from seeing meals and outcomes side by side — and who keep habits better with friends attached.

Trade-off

iPhone-only, needs a supported CGM for its signature loop, and the full experience is subscription-based after the trial.

How to actually choose

Category lists flatten an important truth: these apps solve different problems, and the failure mode is picking a well-reviewed app aimed at someone else's problem.

Your problem is record-keeping for appointments → mySugr or Glooko. Clean logs, clinical reports, your endo already knows the format.
Your problem is knowing what is in food → Carb Manager for database depth, SNAQ or CarbLens AI for camera-first estimation.
Your problem is understanding what meals do to you → you want meal-to-glucose pairing: SNAQ or CarbLens AI (ours), which exist precisely for that loop.
Your problem is staying motivated → One Drop if human coaching keeps you engaged; CarbLens AI if friends, streaks, and competition do.
Your problem is everything at once → resist the urge to install five apps. The best app is the one still on your home screen in March.

What we deliberately left out

Insulin dose calculators and closed-loop tools are a different category with different stakes — bolus math belongs in devices and software your endocrinologist prescribes and configures, not in a roundup. Similarly, CGM manufacturer apps (Dexcom, Libre) are not listed because if you use the hardware, you already have the app.

The honest caveat about lists like this

Most "best diabetes apps" articles on the internet are written by content teams that have never treated a low at 3am, and some are written by companies ranking themselves first without telling you (we ranked ourselves last and told you). Cross-reference any list — including this one — against community threads on r/Type1Diabetes and the App Store reviews sorted by recent. The community's opinion of an app six months after the marketing push is the real review.

FAQ

What is the best app for type 1 diabetes?

It depends on the problem you are solving. For clinical logging and reports, mySugr and Glooko are the established picks; for food-database depth, Carb Manager; for photo-based meal analysis paired with your CGM curve, SNAQ and our own CarbLens AI. The honest answer is whichever one you will still be using in three months.

Are diabetes apps medical devices?

Most tracking and logging apps — including CarbLens AI — are explicitly not medical devices: they inform, they do not diagnose or dose. Apps that calculate insulin doses or drive pumps are regulated differently and should come to you through your care team. Any app in this category should say clearly which side of that line it is on.

Which diabetes apps work with Dexcom or Libre?

Glooko aggregates most major CGMs for clinical review; SNAQ overlays CGM data on meals; CarbLens AI connects to Dexcom (via Share) and FreeStyle Libre (via LibreLinkUp) to attach a live 3-hour curve to each logged meal. mySugr and Glucose Buddy center on manual or meter-based entry, with integrations that vary by region.

Why is CarbLens AI on its own list?

Because leaving it off would be stranger — this is our site, and the roundup exists partly so you can see where we think we fit. We disclosed it at the top, marked it in the list, ranked it last, and wrote real trade-offs (iPhone-only, CGM-dependent signature feature, subscription). Judge it against the others with that disclosure in mind.

Keep reading

Real quick — we’re not your doctor. Everything on this page is general information, not medical advice, and diabetes is deeply individual. CarbLens AI never recommends insulin doses. Use what you learn here to have smarter conversations with your care team.

Let's make diabetes fun.

Snap a meal, watch the curve, rack up wins with your crew.

Install on the App Store

iPhone · Works with Dexcom + Libre · 3-day free trial