🎉 Log & Grow is now available on Google Play  —  Download free today
Now available on Google Play
Log & Grow — Wonder why you feel worse some days? AI reveals hidden health patterns. Get it on Google Play

Google Play and the Google Play logo are trademarks of Google LLC.

★★★★★ 4.7 / 5 from beta testers
All data encrypted on your device
10-day free trial — no credit card
GDPR compliant
See it in action

Everything you need, in one app

Built around your personal data — not what works for the average person.

Log & Grow — Track everything in one place: nutrition, activity, body metrics and air quality
Log & Grow — Understand your health with clear insights on calories, macros and key metrics
Log & Grow — Get AI-powered coach insights with smart analysis and personalised recommendations
What makes Log & Grow different

Built around your patterns

Every feature builds a picture of your health that no generic app could have.

Personal correlation engine

Discovers which factors — air quality, food, mood — actually drive your energy and symptoms. Not population statistics.

Daily AI health coach

Every morning a personalised report analyses your previous day — written about your metrics, not templated advice.

Air quality linked to your health

Automatically logs local PM2.5, NO₂ and O₃ and connects them directly to your daily health metrics and symptoms.

Snap a meal, get nutrition

Photograph your plate or describe it in words. AI returns a full breakdown — calories, protein, carbs, fat, sodium, fibre.

30-day insight unlock

The AI gets smarter the longer you log. After 30 days it spots statistically meaningful patterns specific to your body.

Your data, your device

All health records are AES-256 encrypted on your phone only. No central database. Full data export anytime.

The science behind it

Insights that no one else has about you

Most health apps compare you to averages. Log & Grow runs a correlation analysis across all your own data points — connecting your environment, nutrition, vitals, and mood into a picture that is uniquely yours.

After 30 days your AI coach can identify that your blood pressure rises after high-sodium meals, or that your headaches correlate with PM2.5 spikes — because your data shows it.

Sample personal correlations found
PM2.5 high day→Headache next dayr = 0.82
High sodium meal→Blood pressure +8r = 0.74
3+ coffees→Resting pulse +9r = 0.61
Low carb day→Energy: tiredr = 0.58
These are illustrative examples. Your correlations will be different — because you are.

Your health data belongs to you

Log & Grow was designed privacy-first from day one. Your health records never touch our servers. AI services process your data solely to generate your coaching report and discard it immediately after.

Encrypted on-device storageAES-256 SQLCipher database. Unreadable without your device credentials.
No health data stored on serversAI services process your request and discard the data immediately.
Full data export anytimeDownload everything as a ZIP file. Your data is always yours to take.
GDPR compliantFull privacy policy, right to erasure.

Have a question or suggestion? Use the Contact Us feature inside the app — it reaches us directly and keeps your message private. We read every one.

Stop guessing. Start understanding.

Download Log & Grow free today. Your 10-day trial starts automatically — no credit card required.

Get it on Google Play

Google Play and the Google Play logo are trademarks of Google LLC.

Free to download · Android · 10-day Premium trial included