FitDIY

iOS 17+ · Free · No account

The private, actually-free fitness tracker.

Food, weight trend, lifting, cardio, and BJJ in one app — no account, no subscription, no ads, no data collection.

Download on the App Store Read how the on-device AI works →
FitDIY Today screen — calories, protein, and weight trend at a glance. Caption: No account. No ads. No subscription.

One app for everything you train and everything you eat

Food tab — barcode scanning and daily macro targets. Caption: Scan any barcode. Free.
Train tab — lifts, cardio, and BJJ sessions in one log. Caption: Lifts, cardio and BJJ in one log.
Body tab — smoothed weight trend line. Caption: Watch the trend, not the noise.
Today screen — the day's food, training, and weigh-in in one place.

Everything the big trackers paywalled, free

Barcode scanning, adaptive calorie & macro targets, a full training log — the features that live behind subscriptions everywhere else are simply free here. Forever. Switching from MyFitnessPal? Read the honest comparison →

  • Scan any grocery barcode and log a meal in seconds — no scan limits, no premium tier
  • Calorie and macro targets computed from your goal, your training week, and your steps — and they recalibrate from your real logs over time
  • Full strength, cardio, and BJJ logging — nothing gated
  • Supported by an optional tip jar — no investors, no ads, no subscription

Built for people who run their own program

Food, without the friction

  • Scan a barcode, tap a favorite, or enter by hand
  • Or photograph your plate — on-device AI suggests foods and portions, you confirm
  • Calories and protein against your targets, carbs and fat alongside

Weight, as a trend

  • Weigh-ins become a smoothed trend line, not daily noise
  • Projection to your goal at your current rate
  • Smart-scale entries sync in from Apple Health

Training, your way

  • Strength: sets with reps, load, and RIR; double progression suggests what to add next
  • Cardio: runs, intervals, bike, row — mirrored to Apple Health
  • BJJ: rounds, intensity, soreness — with recovery flags when hard days stack

See it, review it

  • Record lifts and rolls; trim, slow-mo, scrub frame by frame
  • Progress photos in a private, app-local gallery
  • Reports: chart any metric, overlay two, see how they move together
App Privacy: Data Not Collected

Private by design

Your data never leaves your phone. That's not a promise buried in a policy — it's FitDIY's App Store privacy label.

  • No account. No ads. No analytics. No cloud.
  • Everything lives on your device — Apple Health sharing is opt-in and under your control
  • Delete any entry, or everything, anytime
  • Even the AI food scanner runs entirely on your phone

Read the full privacy policy →

A 2.6 GB AI model that never phones home

Photograph a meal and an on-device language model (Gemma, via LiteRT-LM) identifies the foods and portions for you to confirm, edit, and log. The model is an optional download, photos are processed in memory and never uploaded, and nothing is logged without your confirmation. It's labeled experimental — because we'd rather be honest than impressive.

Running Gemma on an iPhone to identify dinner — the full engineering story →

Why is it free?

FitDIY has no backend — everything runs on your phone, so another user costs us nothing. No investors, no ads, no subscription: it's built by one person for his own training, shared for everyone, and supported only by an optional tip jar. Here's the story →