Caffeine Tracker vs Bio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caffeine Tracker
This app helps you track your caffeine intake and understand its impact on your sleep, focus, and energy levels. It features a comprehensive database of drinks, real-time half-life calculations, and personalized insights to help you manage your consumption.
- Instant caffeine logging for various drinks
- Real-time caffeine half-life calculator
- Sleep impact analysis
- Apple Watch companion app
- Caffeine reduction goals
- Smart reminders
- Widget support
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Track your caffeine intake and understand how it affects your sleep, focus, and energy with MoonLatte — the smart caffeine tracker for iPhone and Apple Watch. HOW IT WORKS Log Your Caffeine Quickly log coffee, espresso, tea, matcha, energy drinks, soda, and pre-workout supplements. Our caffeine database covers hundreds of drinks with accurate caffeine content per serving. Half-Life Visualization See exactly when caffeine leaves your system. MoonLatte calculates caffeine half-life in real-time, showing you the optimal time to stop drinking coffee for better sleep. Sleep & Focus Impact Understand how your caffeine intake affects your sleep quality and daily focus. Get personalized insights based on your consumption patterns and sleep schedule. Apple Watch App Track caffeine directly from your wrist. Quick-log your favorite drinks, view your daily caffeine balance, and get alerts when it's time to switch to decaf. Reduce & Quit Caffeine Set caffeine reduction goals and track your progress. Whether you want to cut back on coffee, quit energy drinks, or find your optimal caffeine balance — MoonLatte helps you get there. Smart Reminders Get notified when your caffeine levels are high before bedtime. Set custom reminders to log your drinks and stay within your daily caffeine limit. KEY FEATURES - Instant caffeine logging for coffee, tea, espresso, matcha, energy drinks, soda - Real-time caffeine half-life calculator and metabolism tracker - Sleep impact analysis and bedtime caffeine alerts - Apple Watch companion app for wrist-based tracking - Caffeine withdrawal timeline and reduction goals - Beautiful charts showing daily, weekly, and monthly caffeine trends - Caffeine content database for hundreds of popular drinks - Widget support for quick caffeine overview PURCHASE INFORMATION MoonLatte offers a Lifetime purchase option for full access to all premium features. This is a one-time purchase — no subscriptions. Privacy Policy: https://moonlatte.app/privacy Terms of Use: https://moonlatte.app/terms
Bio
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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/
Screenshots
Verdict
The clearest difference is iOS requirement: Bio at 15.1 against Caffeine Tracker's 18.2. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Caffeine Tracker sells 3 in-app purchases, starting at $2.99 per 7 days and Bio sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.
| Parameter | Caffeine Tracker | Bio |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.2 | 15.1 — better |
| Further details — not scored | ||
| Size | 20 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Pawel Karniej | Thomas Ferrer |
In-app purchases
Caffeine Tracker
- MoonLatte Weekly$2.997 Days
- Moon Latte Yearly$9.991 Year
- Lifetime Premium Access$19.99
Bio
- weekly subscrition$1.997 Days
- monthly subscrition$5.991 Month
- yearly subscription$29.991 Year








