Activity · Complete history from late August 2025
Energy intelligence
Your body is a dataset StatsKey makes legible.
Record nutrition in seconds, connect your biometrics, and ask Intelligence what's actually driving your energy — with the evidence behind every number.
Free today, with optional Pro ($4.99/mo) and Pro+ ($19.99/mo) — annual plans for less, with the same pricing on the web, App Store, and Google Play. Free access is introductory and may move to paid pricing as StatsKey grows.
How I'm using it
Can I run an Olympic marathon?
I build StatsKey to answer a real question: how far can training principle take me?
The record below follows the experiment from late August 2025 forward: complete running history, every reliable public food recording, a full historical micronutrient profile, and the current training plan. Location coordinates never load in this public view.
Live from StatsKey
Connecting…
My complete activity and nutrition record
Live recent data plus a date-indexed public archive, built once and served without recomputing the full history for every visit.
Nutrition · Live insights + complete historical profile
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.
103nutrient model
8nutrient categories
USDAFoodData Central
4Intelligence models
iOS+ Apple Watch
5languages
Why StatsKey
Accurate or effortless. StatsKey is the rare both.
Verified trackers are rigorous but slow and leave most micronutrients blank. Effortless photo apps are fast but shallow. StatsKey is the missing middle — low-friction capture, per-nutrient provenance, abnormality detection, and a connected model neither side has.
Search → review → comprehensive Nutrition Facts. Actual screen recording.
Calorie apps
MyFitnessPal, Cal AI — fast, but shallow
— Comprehensive micronutrients
— Per-nutrient provenance
— Abnormality detection
— Connected model
~ Intelligence grounded in your data
— Blood & stool labs
StatsKey
The missing middle
✓ Comprehensive micronutrients
✓ Per-nutrient provenance
✓ Abnormality detection
✓ Connected model
✓ Intelligence grounded in your data
— Blood & stool labs · not available
Lab tests
Function, InsideTracker, Zoe — deep, but disconnected
~ Comprehensive micronutrients
✓ Per-nutrient provenance
✓ Abnormality detection
— Connected model
~ Intelligence grounded in your data
✓ Blood & stool labs
✓ yes · ~ partial · — no. Comparison from independent 2026 app reviews and vendor materials; StatsKey figures from code & internal evals.
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.
Confidence gates the correction: Baseline (formula) → Medium (+ Watch) → High (+ weight trend). Manual edits always win — flip one switch and it's your number again.
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 — cross-validated by your weight trend
Outside the expected range
Catch what's abnormal. 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.
The hardest signal to talk about
The gut: huge, multifactorial, and mostly invisible.
Around 40% of people have a disorder of gut–brain interaction and ~12% have IBS; most name food as a trigger, but every trigger list is individual. In one US study, more than 60% of patients hid bowel-urgency symptoms from their own doctor out of embarrassment.
StatsKey's Gut Check records the whole episode — Bristol type with mixed-episode phases, urgency, control, passage, cleanup, red flags — and scores each one 0–10 for GI burden, right alongside food, fiber, glucose, and training. Gut–brain patterns compute from your own paired days, the record locks behind Face ID, and Intelligence can trace any rough afternoon back to the meals before it. No one has to say a word.
NIDDK (IBS ~12%) · Rome IV DGBI epidemiology (Sperber 2021; Palsson 2020) · Lilly CONFIDE (bowel-urgency underreporting).
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.
Start measuring what matters
Build the model your body has been asking for.
Start free today, then add optional Pro ($4.99/mo) or Pro+ ($19.99/mo) when you want more — annual plans save more, and pricing is the same on the web, App Store, and Google Play. Free access is introductory, and pricing may change as StatsKey grows.
Now available in English, Spanish, German, Japanese, and Brazilian Portuguese.