Comparison

Caffeine App vs CafLog

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

Head to head
About

Caffeine App

Track your caffeine intake from various beverages and monitor your hydration levels. Visualize your caffeine curve over 24 hours and receive notifications for your optimal sleep time. Integrates with Apple Health and Apple Watch for seamless logging and data syncing.

Highlights
  • Log caffeine from coffee, tea, and energy drinks
  • Visualize 24-hour caffeine curve
  • Calculate optimal sleep time
  • Track daily water intake
  • Apple Watch logging and complications
  • Apple Health integration
  • iCloud sync
Features
Read full description

How much caffeine is still in your body? When can you fall asleep? Are you drinking enough water? Caffeine App gives you the answers — at a glance. Caffeine Tracking • Log every coffee, tea, espresso, energy drink, or mate • Scrollable 24-hour timeline shows your caffeine curve • See how much caffeine is currently in your system • Create custom drinks with individual caffeine amounts • Caffeine calculator for drinks with unusual sizes Optimal Sleep Time • Caffeine App calculates when you're ready to sleep • Get notified when your sleep time is reached • Set your personal caffeine limit and desired sleep time Water Tracking • Track your daily water intake with personalized goals • Save your favorite glass and bottle sizes • Customizable reminders to stay hydrated Statistics • Daily caffeine and water charts across your full history • See which drinks make up most of your caffeine • Compare your water intake against your daily goal Widgets • Caffeine Now: current caffeine level and 30-day history • Water Intake: today's progress towards your goal • Quick Log: log your favorite drink with one tap • Home Screen and Lock Screen widgets Apple Watch • Log caffeine and water right from your wrist • Daily charts for caffeine and water • Complications show your optimal sleep time More Features • Apple Health integration — caffeine and water entries stay in sync • iCloud sync across all your devices • Dynamic Type for optimal readability • URL scheme support

About

CafLog

Read full description

CafLog helps you log caffeine in seconds and see how much will still be in your body at bedtime. - Your drinks become a 3D scene Each time you log a drink, a cup, can or bottle drops from the top of the screen and piles up at the bottom. The pile resets every week, so you can see at a glance how much you've had this week. You can grab and move the drinks with your finger. - Quick logging Pick from 26 drinks, including coffee, espresso, green tea and energy drinks. Long-press the log button to bring up your favorites. Adjust the amount or time later, and add your own drinks. - Coffee-kun tells you about your sleep CafLog estimates the caffeine in your body now and what will be left at your bedtime. Coffee-kun, the app's character, sums up your day in one line. - Look back with a monthly grid Each day of the month is a square shaded by how much you had. Days without a record show as no-caffeine days. Highlights are summed up in four cards. - Rewards that grow as you go Keep logging to climb six achievement levels. Each level unlocks rewards: Coffee-kun expression icons, Coffee-kun artwork, themes for the whole app and 3D looks. - Widgets Check today's total and your bedtime estimate on the Home Screen and Lock Screen. - CafLog Pro (auto-renewing subscription) - Past records (earlier weeks in 3D and earlier months in Review) - Metabolism simulation (your caffeine curve) - Every look unlocked - Saving to Apple Health and iCloud sync - Up to 4 favorites - No ads Monthly and yearly plans are available. If a plan includes a free trial, cancel at least 24 hours before it ends to avoid being charged. Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings. The free version shows ads at the bottom of the Review and Account screens. CafLog never asks to track you for ads and does not show personalized ads. Amounts are estimates based on typical values and are not intended for medical diagnosis or treatment. Terms of Use: https://app.yutodev.com/apps/caflog/terms/ Privacy Policy: https://app.yutodev.com/apps/caflog/privacy/

Screenshots

Caffeine App4 screens
CafLog4 screens

Verdict

The call

The clearest difference is ads: Caffeine App at none against CafLog's shown. Caffeine App also leads on update cadence (monthly vs every 7 months) and iOS requirement (18.0 vs 26.1). On price, in-app purchases and device support 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 App sells 1 one-off in-app purchase and CafLog sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Caffeine App ships an update monthly, CafLog every 7 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Caffeine App versus CafLog: the parameters behind the verdict, then further details
ParameterCaffeine AppCafLog
PriceFreeFree
Rating4.6 (341 ratings) — better—
Positive reviews73.7% of reviews—
Number of ratings341 — better—
Update frequencyMonthly — betterEvery 7 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Apple Watch, Vision Pro — betteriPhone, iPad
Requires iOS18.0 — better26.1
Further details — not scored
Size20 MB110 MB
Age rating4+17+
DeveloperOleg MuellerYuto Uesugi

Bugs and requests

Caffeine App

Reported bugs

10 issues
  • Sleep ready time displays current time instead of predicted sleep time
  • Cannot rename custom amounts until after adding them
  • Newly added custom amounts appear at bottom of list
  • Health app data from third-party apps not syncing
  • All presets missing in some versions
Show 5 more
  • HealthKit integration broken in certain versions
  • Shift work time differential not processed correctly
  • Outdated caffeine data for Dunkin Donuts beverages
  • Graphics update delays causing app unresponsiveness
  • Watch app loading issues on initial launch

Requested features

20 requests
  • Toggle option to disable bar chart visualization
  • Taller graph display area with scrolling capability
  • Personalization based on body weight and metabolism
  • Ounce-based measurement options for drinks
  • Multi-day and historical trend analysis
Show 15 more
  • Siri Shortcuts integration for automated logging
  • Today widget for quick access
  • Mood and energy level tracking
  • More granular unit adjustments (fractions of shots)
  • Expanded beverage library (Monster Java, Sheetz coffee, K-cups, etc.)
  • Custom coffee group creation without preset requirements
  • Apple Watch complications showing current caffeine levels
  • Watch app graph visualization
  • Headache threshold level tracking
  • Future-looking graph projections
  • Water consumption tracking integration
  • Ability to rename custom amounts before adding
  • Custom amounts appearing at top of list instead of bottom
  • Shift work schedule support
  • Average daily caffeine statistics

CafLog

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Caffeine App

One-time1
  • Unlock Pro$4.99
2 purchases

CafLog

Subscriptions2
  • Monthly Plan3 Days trial$1.991 Month
  • Annual Plan7 Days trial$9.991 Year

Questions

Is Caffeine App free?
Caffeine App is free to download, with in-app purchases available.
Is CafLog free?
CafLog is free to download, with in-app purchases available.
Do Caffeine App or CafLog have ads?
CafLog shows ads; Caffeine App does not.
Which is updated more often, Caffeine App or CafLog?
Caffeine App ships an update monthly, and CafLog every 7 months. Most recently, Caffeine App was updated on November 2, 2026 and CafLog on October 31, 2026.

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