The WHOOP companion app that turns your data into decisions
A WHOOP companion app is a third-party app that reads your WHOOP data through the official WHOOP API and adds analysis the WHOOP app doesn't do. Vita (100old.app) is a WHOOP companion for iOS: it fuses your WHOOP recovery, sleep and strain with Apple Health and uploaded lab reports, computes a cross-source Body Age, and gives you an AI coach that answers in plain language — in English or Chinese. Free to download.
Why WHOOP users add a companion app
WHOOP is one of the best physiological data collectors you can wear — 24/7 heart rate, HRV, sleep staging and strain. But the WHOOP app analyses only what WHOOP itself records. If you also carry an iPhone or wear an Apple Watch, a large part of your health picture — steps, workouts logged elsewhere, VO₂max estimates, body composition from a smart scale, and everything in your blood work — lives outside it. A companion app closes that gap: it keeps WHOOP as the collector and adds the layers WHOOP doesn't cover.
- Cross-source view: WHOOP + Apple Health + lab reports in one timeline
- Metrics WHOOP alone can't compute, like a Body Age that folds in clinical markers
- A second opinion: when two sources agree, you can trust the trend more
- Different interface, language or price model than a WHOOP membership
What to look for in a WHOOP companion app
Three things separate a useful companion from a novelty. First, official API access — the app should connect through WHOOP's authorized cloud API (OAuth), never by scraping or asking for your WHOOP password. Second, added analysis — it should compute something new from the combination of sources, not just re-display WHOOP's numbers. Third, data respect — clear privacy terms, no reselling, and easy disconnection.
What Vita adds on top of your WHOOP
Vita connects to WHOOP through the official authorized API and reads your recovery, sleep and strain directly. On top of that it layers Apple Health (steps, workouts, VO₂max, weight, blood pressure) and lab reports you photograph. The result is a set of reads a WHOOP alone can't produce:
- Cross-source Body Age — biological age estimated from VO₂max, resting heart rate, HRV, sleep and steps, with each driver's contribution visible. WHOOP's own WHOOP Age uses WHOOP data only; Vita's folds in Apple Health and clinical markers.
- AI coach that reads everything — daily state-read plus one concrete action, grounded in your WHOOP recovery, your Apple Health trends and your uploaded blood work. Works natively in Chinese and English (WHOOP Coach is English-only).
- Lab-report reader — photograph a physical-exam or blood report; markers and reference ranges become a long-term record the AI considers.
- One timeline — overlapping metrics trust WHOOP; Apple-only metrics fill in independently. No switching between apps.
How to connect WHOOP to Vita (3 steps)
Setup takes about two minutes: download Vita free from the App Store, tap 'Connect WHOOP' in settings, and approve access on WHOOP's own authorization page (OAuth — Vita never sees your WHOOP password). Your recent recovery, sleep and strain sync automatically, and an hourly sync keeps it fresh. Connect Apple Health in the same screen for the full cross-source picture.
Does a companion app replace the WHOOP membership?
No — and be wary of anything that claims to. Your WHOOP membership is what powers the band's data collection; a companion app builds on that stream. Vita is priced as an add-on, not a replacement: free to download with core features free forever, premium analysis from $2.99/month or $99 lifetime — a small layer on top of the membership you already pay for.
FAQ
Is Vita an official WHOOP app?
No. Vita is an independent iOS app that connects through WHOOP's official authorized cloud API (OAuth). It is not made or endorsed by WHOOP — it reads the data you explicitly authorize, and you can disconnect at any time.
Doesn't the WHOOP app already have WHOOP Age and an AI coach?
Yes — and they're good. The difference is scope: WHOOP Age and WHOOP Coach analyse WHOOP's own data, in English. Vita's Body Age and AI coach also draw on your Apple Health data and uploaded lab reports, and answer in Chinese too. It's added breadth, not a duplicate.
What WHOOP data does Vita read?
Daily recovery, sleep (duration, stages, efficiency) and strain, via the official API. Overlapping metrics trust WHOOP as the source of truth; Apple Health fills in what WHOOP doesn't track.
Can I use Vita if I stop wearing my WHOOP?
Yes. Vita computes Recovery, Sleep analysis and Body Age from Apple Watch data alone. If you resume WHOOP later, the sources merge again automatically.
How much does it cost on top of my WHOOP membership?
Vita is free to download with core features free forever. Premium (Body Age detail, lab-report reading, AI coach with 50 chats/month) is $2.99/month, $29.99/year or $99 once — deliberately priced as a light add-on.
Metric explanations on this page are based on published research — see our sources & methodology.