SynaptoFit
Currently in beta

The fitness tracker that works without signal.

Log a workout in a basement gym. Scan a barcode on a train. Check your progress on a plane. SynaptoFit runs entirely on your phone — the internet is optional.

Workouts, nutrition, body composition and water, in one app. No ads, no analytics, no selling your data.

Built offline-first, not offline-tolerant

Most tracking apps are a website in a wrapper — lose signal and you lose the app. SynaptoFit stores everything in a database on your phone and treats the server as a backup, not a dependency.

  • Every screen reads and writes locally, instantly
  • Your graphs and totals are calculated on the device
  • Changes sync in the background when signal returns
  • Nothing you log can be lost to a failed request

At a glance

Exercise library264 exercises
Muscle tagging22 muscle groups
Macros trackedAll 8
Works offlineEvery screen
Ads & trackersNone
Core featuresFree

What's in it

Everything below is built and running in the current beta.

Workout logging

264 exercises or your own. Sets, reps, weight, RPE, rest and tempo. Cardio with time, distance and heart rate. Save and reuse presets.

Nutrition & barcodes

Scan a barcode or search by name. All eight macros — calories, protein, carbs, fat, fibre, sugar, salt and saturated fat. Meal sections you control.

Body & composition

Weight, body fat, custom measurements and progress photos, with trend graphs over any range you choose.

Water tracking

Quick-add in one tap, with a jug on your dashboard whose water actually tilts as you move the phone. Small thing. Oddly satisfying.

Targets & streaks

Set a target for any metric and watch the line on the graph. Logging streaks, milestones, and a bit of confetti when you earn it.

Safety checks

Set a target that's genuinely risky and the app says so — with the research behind it. It warns, it never blocks. Your body, your call.

The free core promise

Logging your workouts, food, body and water is free, and it isn't crippled — no capped entries, no locked history, no watching an advert to save a set.

Optional paid features may arrive later for people who want automated goal-setting or deeper analysis. The core stays free.

No ads. No third-party analytics. Your data is never sold. Read the privacy policy — it's written to be read, not to be skipped.

Join the beta

SynaptoFit is in active beta on iOS via TestFlight, with Android on the way. Testers get it free and their feedback genuinely shapes what gets built next — most of what's listed above came from tester requests.

Legal

SynaptoFit handles health data, so these are written plainly rather than hidden behind jargon.