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Built for endurance athletes

Fuel that scales with
your training

Fuel optimal adaptation and performance. Periodised nutrition planning that scales carbohydrate and calorie targets to your training load.

No payment required

Syncs with Intervals.icu · Based on peer-reviewed sports science
Large customisable food database
USDA search + custom foods
AI analysis of your food log
Personalised meal suggestions
Integrate training load and nutrition
Intervals.icu sync
Research-backed
Peer-reviewed sports science

Everything a nutrition app
for athletes should have

Built by an exercise scientist who got frustrated with generic calorie trackers that ignore training load.

Periodised Targets

Carbohydrate and calorie targets scale with session RPE and duration. Set upper and lower limits per hour, and control how fuelling increases with training intensity.

Sync Your Training

Automatically import planned and completed sessions via Intervals.icu, a free central training hub that syncs with major platforms. Fuel targets (pre/post and during session) are generated based on each workout.

Saved Meal Templates and Daily Log

Save meals as templates and reload them with one click. Turn yesterday's log into today's, or start afresh. No more re-entering the same foods every day.

Smart Quantity Suggestions

Select your foods and automatically calculate the amounts needed to hit your remaining carbohydrate and calorie targets.

Trend Tracking

See how actual intake compares to targets over time and how it fluctuates with training load. Daily totals sync back to Intervals.icu wellness fields so nutrition data sits alongside training data.

Custom Food Database

Search thousands of foods from the USDA FoodData Central database or add custom foods with full macro and serving-size control.

AI Nutrition Assistant

Ask the in-app assistant for meal ideas, recipe suggestions, or food swaps — informed by your training sessions, remaining targets for the day, and what you have already logged. Suggested meals can be added to your log directly from the chat.


Reads your sessions, calorie and carb targets, and current log — then gives practical, personalised suggestions rather than generic advice.

You
What should I eat before my 2hr ride this afternoon?
Assistant
You have 60g carbs and 280 kcal remaining for your pre-session meal. Oats with a small banana would fit well — 60g oats and half a banana gets you to about 57g carbs and 270 kcal.
You
Sounds good
Assistant
Here is the meal — add it to your log when ready.

Set up in minutes

Connect your training data, set your targets, and start fuelling with precision.

01
Set your baseline targets

Enter your bodyweight and baseline macro targets — carbs, protein and fat per kg. These form the foundation of your daily nutrition on rest days.

02
Configure your intensity scaling

Set the upper and lower carb and calorie limits per hour, the RPE point where targets start ramping up, and how steeply they increase. Fully customisable to your training style.

03
Sync your sessions

Connect Intervals.icu to automatically pull in your training sessions. Each session gets its own pre/post and during-session fuel targets based on duration and intensity.

04
Log food and track trends

Log meals using saved templates or the USDA database. Use Suggest quantities or ask the AI assistant to hit your targets. Save daily totals and watch trends build over time.

Built on sports science,
not guesswork

The carbohydrate periodisation approach and intensity-based scaling are grounded in peer-reviewed research from leading sports science journals.

Carbohydrate and energy prediction from training load — Rothschild et al. (2025). A Novel Method to Predict Carbohydrate and Energy Expenditure During Endurance Exercise Using Measures of Training Load. Sports Medicine, 55(3):753–774. doi:10.1007/s40279-024-02131-z
Carbohydrate periodisation — Impey et al. (2018). Fuel for the Work Required: A Theoretical Framework for CHO Periodization. Frontiers in Physiology. doi:10.3389/fphys.2018.01405
Carbohydrate intake during exercise — Burke et al. (2011). Carbohydrates for training and competition. Journal of Sports Sciences. doi:10.1080/02640414.2011.585473
Protein requirements for athletes — Morton et al. (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass. British Journal of Sports Medicine. doi:10.1136/bjsports-2017-097608

Free to use

Glycogo is free while it is in development. If you find it useful, a small donation helps keep it running and supports continued development.

Designed and built by a PhD-qualified engineer and exercise scientist, with experience in research, data systems, and performance analytics. Support is appreciated. I am currently seeking professional opportunities.