Your body is the engine.
Know exactly what it burns.
Military-grade metabolic science. On your wrist. On your phone.
Download HikoGeneric fitness apps guess your calories.
Hiko calculates them — using the same metabolic science the US Army uses for its soldiers.
Military-grade metabolic science
Hiko uses the Load Carriage Decision Aid (LCDA) equation published by USARIEM in 2022. Six variables. One precise calorie number.
Every surface has a cost
Paved road, gravel trail, deep snow — each surface changes your energy expenditure. Hiko detects terrain automatically via OpenStreetMap.
Japanese research. 20 years proven.
Alternating fast and slow intervals designed by Professor Hiroshi Nose at Shinshu University. Hiko is the first app to combine SIW with load carriage science.
Your heart rate tells the story
Heart rate, speed, altitude, terrain — Hiko correlates all four in real time. When your heart says you're climbing before GPS does, Hiko knows.
Your data stays on your device. Period.
On-Device Only
All calculations happen on your iPhone. Nothing leaves.
No Servers
Hiko has no backend. No accounts. No sign-up.
No Tracking
Zero analytics. Zero data collection. Zero compromise.
Your Health Data
HealthKit data stays in Apple's encrypted container.
Built on real research.
Years of interval walking research at Shinshu University
LCDA equation published by USARIEM
Bytes of your data that leave your phone
Based on peer-reviewed research by Looney et al. (USARIEM) and Prof. Hiroshi Nose (Shinshu University, Japan).
Learn how LCDA works