Comparison

Caffeine Tracker vs Bio

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Bio

Features
Read full description

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

Caffeine Tracker4 screens
Bio3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard1 real difference · 8 level
Caffeine Tracker versus Bio: the parameters behind the verdict, then further details
ParameterCaffeine TrackerBio
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.215.1 — better
Further details — not scored
Size20 MB42 MB
Age rating4+4+
DeveloperPawel KarniejThomas Ferrer

In-app purchases

3 purchases

Caffeine Tracker

Subscriptions2
  • MoonLatte Weekly$2.997 Days
  • Moon Latte Yearly$9.991 Year
One-time1
  • Lifetime Premium Access$19.99
3 purchases

Bio

Subscriptions3
  • weekly subscrition$1.997 Days
  • monthly subscrition$5.991 Month
  • yearly subscription$29.991 Year

Questions

Is Caffeine Tracker free?
Caffeine Tracker is free to download, with in-app purchases available.
Is Bio free?
Bio is free to download, with in-app purchases available.
Do Caffeine Tracker or Bio have ads?
Neither Caffeine Tracker nor Bio shows ads.
Which is updated more often, Caffeine Tracker or Bio?
Caffeine Tracker ships an update every 2 months, and Bio every 2 months. Most recently, Caffeine Tracker was updated on October 7, 2026 and Bio on October 13, 2026.

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