Comparison

Caffeine Tracker vs Clarity

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

Head to head
About

Caffeine Tracker

Track your caffeine intake and understand its impact on your sleep and health. Get personalized insights, set 'Last Call' reminders, and visualize your consumption trends with detailed charts and widgets.

Highlights
  • Log various caffeine sources
  • Predict caffeine elimination time
  • Set 'Last Call' caffeine reminders
  • Analyze caffeine's impact on sleep
  • Visualize caffeine decline over time
  • Customizable drinks with AI
  • Siri Shortcuts and widgets
Features
Read full description

Alyx is a silly way to track caffeine. Quickly log espresso, lattes or anything else and see how it affects your health, sleep or view other interesting stuff! It uses Apple Health to store your data privately, which means it also syncs with iCloud. Of course, you can log caffeine here. Aside from being a coffee, espresso, energy drink, or general caffeine tracker and journal, there are some interesting things it can do: - Figure out when your body will be caffeine free. - Discover how much caffeine will be in your body at bedtime. - Get your customized "Last Call" for caffeine every day, and set an alarm for it! - See how caffeine consumption impacts the amount of sleep you get. - View how caffeine will decline in your body over the next 12 hours. - See if your caffeine consumption has been trending up or down lately. - Tons of Siri Shortcuts. - Tons of widgets! - Create your own custom drinks, and have AI figure out the caffeine contents! - A Hall of Fame for...caffeine consumption? - Um, what else? Oh, tons of charts! So yeah, you can see how caffeine affects your sleep, overall health, see how much sleep you'll lose, and more. I don't know, it's just a fun app. Download it or don't. Love, Alyx -- SUBSCRIPTION & PREMIUM FEATURES -- Most of Alyx is completely free to use. There are premium features if you upgrade to The Caffeine Club, which includes every widget, adding your own custom drinks, several charts, and sleep forecast features. -- LEGAL -- · View our terms of service here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ · View our privacy policy here: https://alyxcaffeinetracker.com/privacy/ Subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Manage your subscriptions in Account Settings after purchase.

About

Clarity

This app helps you understand the impact of caffeine on your sleep, energy, and focus. Log your intake quickly and visualize how caffeine's half-life affects your daily cycles and nighttime rest.

Highlights
  • Fast caffeine logging
  • Caffeine half-life tracking
  • Sleep and recovery insights
  • Focus and energy analysis
  • Daily and weekly insights
Read full description

Clarity is the simplest way to understand caffeine's real impact on your sleep, energy, and focus. Log your intake fast and see how caffeine's half-life affects your entire day — from your 2PM coffee to your nighttime sleep cycles. • Fast caffeine logging and visualization • Caffeine half-life tracking and prediction • Athletes: see how caffeine affects your sleep and recovery • Focus and energy insights, daily and week-by-week Understand your 3PM crash. Improve your sleep by seeing your caffeine carry-over. Use caffeine deliberately, not accidentally. By using this app, you agree to Apple's Terms of Use (https://www.apple.com/legal/internet-services/itunes/dev/stdeula/) and our Privacy Policy.

Screenshots

Caffeine Tracker4 screens
Clarity4 screens

Verdict

The call

Caffeine Tracker and Clarity both sit at 4.9 stars, but that hides the real split: 100% of Clarity's written reviews are positive against 83% of Caffeine Tracker's. Clarity also leads on iOS requirement (18.0 vs 26.0). Caffeine Tracker's advantage is ratings volume (40 vs 2) and update cadence (every 5 days vs every 2 weeks). On price, rating, 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 4 in-app purchases, starting at $1.99 per month and Clarity sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Caffeine Tracker against 5.0 for Clarity. That said, the two scores are not equally well evidenced: Caffeine Tracker has 40 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 83% of Caffeine Tracker's written reviews are positive against 100% of Clarity's.

UpkeepUpdate frequency

Caffeine Tracker ships an update every 5 days, Clarity every 2 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
Caffeine Tracker versus Clarity: the parameters behind the verdict, then further details
ParameterCaffeine TrackerClarity
PriceFreeFree
Rating4.9 (40 ratings)5.0 (2 ratings) — better
Positive reviews83.3% of reviews100.0% of reviews — better
Number of ratings40 — better2
Update frequencyEvery 5 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhoneiPhone
Requires iOS26.018.0 — better
Further details — not scored
Size45 MB25 MB
Age rating4+17+
DeveloperDay Well Spent LLCNexus Nexus

Customer experience

Caffeine Tracker

All ratings40 ratings
Positive97.5%
Neutral0.0%
Negative2.5%
Written reviews18 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Clarity

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Caffeine Tracker

Subscriptions3
  • Caffeine Club$1.991 Month
  • Caffeine Club Annual$9.991 Year
  • Caffeine Club Annual7 Days trial$9.991 Year
One-time1
  • Caffeine Club: Lifetime$24.99
2 purchases

Clarity

Subscriptions2
  • Clarity Plus - Monthly3 Days trial$2.991 Month
  • Clarity Plus - Yearly$19.991 Year

Questions

Is Caffeine Tracker free?
Caffeine Tracker is free to download, with in-app purchases available.
Is Clarity free?
Clarity is free to download, with in-app purchases available.
Which has better reviews, Caffeine Tracker or Clarity?
Clarity is rated higher. Caffeine Tracker averages 4.9 out of 5 from 40 ratings, while Clarity averages 5.0 from 2 ratings.
Do Caffeine Tracker or Clarity have ads?
Neither Caffeine Tracker nor Clarity shows ads.
Which is updated more often, Caffeine Tracker or Clarity?
Caffeine Tracker ships an update every 5 days, and Clarity every 2 weeks. Most recently, Caffeine Tracker was updated on October 17, 2026 and Clarity on October 16, 2026.

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