FastFlo
Health & Fitness
Know exactly what your body is doing between meals.
A fasting and calorie-burn tracker that reads the state you're actually in — fasting stage, metabolic window, energy balance — and keeps every reading on your device.
Platform
iOS
Category
Health & Fitness
Data
On-device
Account
Not required
Capabilities
What FastFlo does — and where it stops.
Fasting, in real time
An interval timer that doesn't just count hours — it names the stage you're in, from fed to fat-burning to autophagy, so the number on screen actually means something.
Scan before you eat
A built-in food scanner and ingredient checker gives you clarity on a meal before it's on your plate. Scan, read, decide.
Energy you can see
Calorie-burn estimates combine your weight, steps and fasting state, paired with BMI insights, so progress reads as a trend and not a guess.
Any protocol you follow
Set up 16:8, OMAD, 5:2 or a window of your own. FastFlo adapts to the way you already fast instead of forcing a template on you.
Your data stays yours
Fasting times, weight and calorie estimates live on your phone. No sign-up, no cloud dependency, no behavioural profiling — ever.
Look inside
Every screen, as it ships.
Why FastFlo
FastFlo vs Zero
Same clean timer, plus a food scanner and real energy tracking Zero leaves out.
FastFlo vs BodyFast
No coach up-sells and no cloud account — the whole app works offline and stays private.
