More ways to move.
Track outdoor routes with GPS, or record an indoor session. Review duration, distance, pace, elevation, and average heart rate when available from your recording device or connected health data.
A little more clarity, every day
Good habits.
Your own rhythm.
A meal you enjoyed. A walk by the water. A little time for yourself. Bring your nutrition, movement, and wellbeing together, at your own pace.
Free to download on iPhone and Android.
Optional Pro subscription. View plans
iPhone or Android. You’re right at home.
See what’s insideAn evening, well spent.REAL APP SCREENSHOT
Public beach view, with no residence shown.
103nutrient model
8nutrient categories
USDAFoodData Central
Intelligencegrounded in your records
iOS + Androidon your phone
6mobile app languages
A LITTLE CLARITY, ONE MEAL AT A TIME
A meal worth remembering.
Follow mahi-mahi from a quick search to a saved meal, then open Nutrition Facts. See the portion, macros, vitamins, minerals, fats, and amino acids available for the food.
- 01 Search
- 02 Record
- 03 Nutrition Facts
Mahi-mahi, in the details.REAL APP RECORDING
iPhone app shown. Full search-to-save recording available.
Capture
A record you can edit
Food text, photos, and labels
Ingredients and serving amounts
Saved foods and meals
Water and daily totals
Review
The evidence behind available values
Nutrient coverage and source details
Measured and estimated values
Values outside your target range
Unknowns kept visible
Connect
Your day in context
Meals, workouts, and recovery
Glucose and wellness history
Intelligence with your records
Plans and reports you can review
Coverage depends on the food, source, and information supplied. A nutrient estimate is not a measurement, and a target-range flag is not a diagnosis.
Adaptive Intelligence. Plans that keep themselves honest.
Set a goal and StatsKey maintains the math: a formula ensemble tuned to your body, thirty days of Apple Watch activity, and your gap-aware weight trend, reconciled into one maintenance number and carried into weekly planning. When measured reality disagrees with the formula, reality wins — in proportion to the evidence.
Intelligence supports planning and optimization across all activities. Suggestions may be incomplete or inaccurate; review and adapt them to your needs before applying them. It is not medical advice.
Recent evidence → weekly plan → race outlook. Actual screen recording.
Formula ensemble
Katch-McArdle · Ten Haaf · Mifflin
Apple Watch
30-day activity · TEF from your macros
Weight trend
gap-aware smoothing · outlier-safe
Maintenance, reconciled
2,872kcal
weight trend pulled +25 kcal
High confidence — informed by your weight trend
Activity recording
Movement that fits your life.
Runs, rides, swims, walks, lifting, and more belong in one activity history. Record the session, keep the details that matter, and see how your work adds up over time.
Every completed set counts.
Build a routine, record the weight and reps you complete, and follow set and rest timers. Weighted, bodyweight, and timed exercises sit alongside your other activities, with lifting history you can review.
Built for interruptions.
On iPhone and Apple Watch, workouts are saved on your device and syncing is retried after connection interruptions. Resume a saved lifting session and check its sync status in the app.
A record you can return to.
Review your activity across weeks, months, and years. Add a past workout, correct its details, and explore the metrics you recorded, including completed sets and lifting volume.
Available metrics depend on the activity, device, permissions, and recording source. Features vary by platform and app version.
Outside the expected range
See what’s outside your target. Trace the evidence.
StatsKey flags micronutrients outside your target range — low or high — then shows the evidence behind each value: confidence, food-level sources, and whether it was measured or estimated. A bison-and-rice nutrient label and its tryptophan sourcing show the whole chain without treating an estimate like a diagnosis.
Bison and rice Nutrition Facts → tryptophan source evidence. Actual screen recording.
EVERYDAY WELLBEING
Make room for how you feel.
Some days are easy to read. Others take a little more attention. Keep notes on how you feel alongside your meals and activity, so you have a record to return to.
Gut Check helps you record digestive symptoms and review them alongside food and movement. Add the details that matter to you, with an optional record lock on supported devices.
Choose Bristol form and mixed phases in seconds. Actual screen recording.
Research concepts
Researching what's to come.
Explore live previews of design studies, documented concepts, and early research programs — not commercial products or clinically validated devices. Each page makes the proposed architecture, evidence boundary, and validation work still required explicit.
THE OLYMPIC MARATHON EXPERIMENT
Can I run an Olympic marathon?
One runner. A big question. The entire journey.
I’m building StatsKey while training to find out how far I can go. Follow the miles, the meals, the recovery, and the plan as it unfolds.
Runs and gym sessions since August 2025, with nutrition alongside them. Explore the record below.
Explore the full record
My full health record alongside the Olympic marathon experiment: running, nutrition, medications, sleep, and biometrics. Updated automatically as new data syncs.
Founder record
Connecting…
The work behind the goal.
Explore the training and nutrition behind the experiment. Sign in to follow the connected record.
Activity · Running + strengthConnecting…
Nutrition · Live insights + historical profileConnecting…
Longitudinal running record and recent activity
Routes stay private by default. A map is requested only after I publish that individual workout from StatsKey, with privacy zones applied.
YOUR NEXT SMALL STEP
Make yourself at home.
Start with a meal, a walk, or a moment to check in. StatsKey is free to download for iPhone and Android.
Optional Pro subscription. Explore plans and pricing.
Features vary by platform, app version, and plan.