# Bio-Rhythm: Caffeine Tracker — Track half-life. Sleep better.

> Track half-life. Sleep better. (iPhone/iPad app by HONO (Lille).)

- Source: https://appshunter.io/ios/app/bio-rhythm-caffeine-tracker/id6756811259 (this page in markdown: same URL + `.md`)
- Developer: [HONO (Lille)](https://appshunter.io/developer/1801518132)
- Category: Health & Fitness, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 42 MB
- Languages: English
- Released: 2026-02-09
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/bio-rhythm-caffeine-tracker/id6756811259/reviews.md

## What is Bio?

Still wired at midnight? Bio-Rhythm is the science-based caffeine tracker built for people who refuse to trade tomorrow's sleep for today's coffee.

Every coffee, tea, or energy drink you log is plotted on a real-time decay curve based on your personal metabolism. You'll see exactly how much caffeine is still in your system — and exactly when it will be safe to sleep.

— PROTECT YOUR SLEEP —
Get a precise countdown to your safe-sleep time. No more guessing whether that 3pm latte will haunt you at 1am.

— TRACK CAFFEINE IN REAL TIME —
Watch your caffeine level rise and fall on a beautiful decay chart, powered by the same exponential half-life formula used by sleep scientists.

— SCORE YOUR SLEEP READINESS —
Get a daily Bio-Rhythm Score from 0–100. Build streaks of "perfect nights" and see your 7-day trend at a glance.

— LOG ANY DRINK IN SECONDS —
27+ preloaded beverages — espresso, americano, matcha, Red Bull, Monster, 5-Hour Energy, Coke and more. Or add your own custom drink.

— HIT YOUR FOCUS ZONE (Premium) —
Smart dosing recommendations tell you exactly when to drink your next coffee for peak focus — and when to stop so your sleep is protected.

— BUILT FOR BIO-HACKERS —
Premium unlocks custom half-life (1–12 hours) and sleep sensitivity threshold (0–100mg) so the math matches your body, not an average.

— PRIVATE BY DESIGN —
All your data stays on your device. No accounts, no cloud, no tracking.

Stop sabotaging your sleep. Start tracking with Bio-Rhythm.

— PREMIUM —
Bio-Rhythm Premium unlocks:
• Custom caffeine half-life
• Custom sleep threshold
• Focus Flow dosing recommendations
• Ad-free experience

Bio-Rhythm is free to download and use. To unlock the full "Bio-Hacker Engine," we offer three auto-renewing subscription options:

Weekly Espresso: $1.99 per week

Monthly Steady: $5.99 per month

Yearly Bio-Hacker: $29.99 per year (Best Value)

Privacy : https://cofeetracker.xn--hn-vrab.com/privacy
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| monthly subscrition | $5.99 | per month |
| weekly subscrition | $1.99 | per 7 days |
| yearly subscription | $29.99 | per year |



## Version history (last 3 releases)

### 1.0.2 — 2026-05-18

• Improved decay chart accuracy
• New drinks added to the database
• Faster app launch
• Bug fixes and polish

Loving Bio-Rhythm? Leave a review — it really helps!

### 1.0.1 — 2026-02-26

fix bugs

### 1.0 — 2026-02-10

No release notes.

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All apps by HONO (Lille): https://appshunter.io/developer/1801518132

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-25.*