Fenn: Running Calorie Counter

App Store App Health & Fitness Free
16 Sept 2026launched 15 days ago
0.00 ratings
n/aApple doesn’t publish installs
WorldwideSold in 50+ App Store storefronts
1.7.0latest version · 3 days ago

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About

Run more, eat more that day. Fenn puts the calories you eat and the calories your runs burn in one ring, on one screen. Log breakfast, head out for a jog, and watch today's allowance grow as the kilometres tick by. No account, no ads, and your food diary is stored on your iPhone. WHY ONE APP? Calorie counters make you import workouts from somewhere else. Running apps never ask what you ate. Fenn does both, so your daily number is always the real one: the lime arc is what you've eaten, the orange arc is what running added. FOOD DIARY THAT'S QUICK TO KEEP • Snap a photo of your plate for meal recognition • Scan a barcode to pull nutrition from Open Food Facts (coverage varies by product and country) • Search a built-in catalogue of 276 common foods that works offline • Save your own recipes and log them in one tap • Quick-add calories when you can't be bothered with the detail • Calories, protein, carbs and fat, plus water • Meal, water and streak reminders RUN TRACKER THAT COUNTS PROPERLY • GPS tracking with a live route map on Apple Maps • Net calories from the ACSM running equation. Your resting burn is already in your daily target, so Fenn doesn't count it twice • GPS noise filtering, so a phone left on the kitchen table doesn't gain distance • Splits, pace, elevation and your full run history • Audio cues while you run with the app open • Live Activity on your Lock Screen during a run • Share your route drawn over one of your own photos NEW: MUSCLE MAP See which muscles your runs have been working, front and back, built from your own run history. A RUNNING PLAN THAT FITS YOU • A weekly running programme based on your current level • Today's session waiting on your home screen PROGRESS YOU CAN READ AT A GLANCE • Weight, calorie and macro trends • A weekly report and streaks • A calorie breakdown showing what's already in your target and what your runs add • Home Screen widget with a one-tap water button WORKS WITH APPLE HEALTH Fenn reads your weight and steps, and saves your runs back to Apple Health as workouts. HOW YOUR TARGET IS WORKED OUT Your daily calorie target comes from the Mifflin-St Jeor equation and your total daily energy expenditure, adjusted for your goal: lose weight, build muscle, improve endurance or stay fit. Pick more than one (say, losing fat while building muscle) and Fenn combines them sensibly. YOUR DATA No account and no sign-up. Your diary is stored on your iPhone; meal photos are sent only for recognition. Export everything whenever you like as JSON or CSV. No ads, ever. FENN PRO Fenn is a subscription app with a 3-day free trial. After the trial, choose Fenn Pro monthly or yearly, or a one-off lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel anytime in your Apple ID settings (Settings > your name > Subscriptions). Please note: Fenn provides estimates to support everyday healthy habits. It is not a medical device and gives estimates, not medical advice. Talk to your GP or a qualified professional before making big changes to your diet or training. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mathwake.com/privacyRead more
Run more, eat more that day. Fenn puts the calories you eat and the calories your runs burn in one ring, on one screen. Log breakfast, head out for a jog, and watch today's allowance grow as the kilometres tick by. No account, no ads, and your food diary is stored on your iPhone. WHY ONE APP? Calorie counters make you import workouts from somewhere else. Running apps never ask what you ate. Fenn does both, so your daily number is always the real one: the lime arc is what you've eaten, the orange arc is what running added. FOOD DIARY THAT'S QUICK TO KEEP • Snap a photo of your plate for meal recognition • Scan a barcode to pull nutrition from Open Food Facts (coverage varies by product and country) • Search a built-in catalogue of 276 common foods that works offline • Save your own recipes and log them in one tap • Quick-add calories when you can't be bothered with the detail • Calories, protein, carbs and fat, plus water • Meal, water and streak reminders RUN TRACKER THAT COUNTS PROPERLY • GPS tracking with a live route map on Apple Maps • Net calories from the ACSM running equation. Your resting burn is already in your daily target, so Fenn doesn't count it twice • GPS noise filtering, so a phone left on the kitchen table doesn't gain distance • Splits, pace, elevation and your full run history • Audio cues while you run with the app open • Live Activity on your Lock Screen during a run • Share your route drawn over one of your own photos NEW: MUSCLE MAP See which muscles your runs have been working, front and back, built from your own run history. A RUNNING PLAN THAT FITS YOU • A weekly running programme based on your current level • Today's session waiting on your home screen PROGRESS YOU CAN READ AT A GLANCE • Weight, calorie and macro trends • A weekly report and streaks • A calorie breakdown showing what's already in your target and what your runs add • Home Screen widget with a one-tap water button WORKS WITH APPLE HEALTH Fenn reads your weight and steps, and saves your runs back to Apple Health as workouts. HOW YOUR TARGET IS WORKED OUT Your daily calorie target comes from the Mifflin-St Jeor equation and your total daily energy expenditure, adjusted for your goal: lose weight, build muscle, improve endurance or stay fit. Pick more than one (say, losing fat while building muscle) and Fenn combines them sensibly. YOUR DATA No account and no sign-up. Your diary is stored on your iPhone; meal photos are sent only for recognition. Export everything whenever you like as JSON or CSV. No ads, ever. FENN PRO Fenn is a subscription app with a 3-day free trial. After the trial, choose Fenn Pro monthly or yearly, or a one-off lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel anytime in your Apple ID settings (Settings > your name > Subscriptions). Please note: Fenn provides estimates to support everyday healthy habits. It is not a medical device and gives estimates, not medical advice. Talk to your GP or a qualified professional before making big changes to your diet or training. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://mathwake.com/privacy

Versions

  1. Version 1.7.0First seen · 29 Sept 2026

    • New muscle map: see which muscles your runs have been working • Route maps now run on Apple Maps • A fresh, quicker setup when you first open Fenn • Apple Health: watch workouts are no longer counted twice, and weight sync is fixed • Faster, more consistent numbers across screens, the widget and Live Activity

Countries

Worldwide

Apple lists this app in 50 or more storefronts, so it is available almost everywhere.

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