Comparison

Caffeine Tracker vs Ioppy

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

Ioppy

Read full description

Slimmy App is an app designed to help you improve your lifestyle through the support of an active community, progress tracking, and tools created to keep you motivated over time. Whether your goal is to build healthier habits, track your achievements, or share your journey with others, Slimmy provides a positive environment where you can grow, stay motivated, and reach your goals. With Slimmy, you can: * Track and monitor your progress over time. * Set personalized goals. * View charts and statistics to measure your results. * Join individual and group challenges. * Share updates, experiences, and achievements with the community. * Receive support and encouragement from other users. * Follow the journeys of friends and community members. * Build positive habits and stay consistent. * Earn achievements and rewards for reaching milestones. At Slimmy, we believe that mutual support and shared experiences are key ingredients for achieving any personal goal. That’s why people are at the heart of everything we do, creating a space where motivation, consistency, and collaboration help every user become the best version of themselves. Download Slimmy today and start your journey toward a more balanced, active, and mindful lifestyle. SUBSCRIPTIONS Slimmy offers auto-renewable subscriptions that unlock premium features. Title: Slimmy Premium Monthly Duration: Monthly Price: €4.99/month Title: Slimmy Premium Yearly Duration: Yearly Price: €44.99/year Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless canceled at least 24 hours before the end of the current period. The renewal charge occurs within 24 hours prior to the end of the current period. You can manage or turn off auto-renewal in your account Settings after purchase. Terms of Use (EULA): https://slimmy.app/terms Privacy Policy: https://slimmy.app/privacy

Screenshots

Caffeine Tracker4 screens
Ioppy4 screens

Verdict

The call

The clearest difference is iOS requirement: Ioppy at 15.0 against Caffeine Tracker's 26.0. 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 4 in-app purchases, starting at $1.99 per month and Ioppy sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Caffeine Tracker ships an update every 5 days, Ioppy every 3 days. The most recent releases landed on October 22, 2026 and October 18, 2026 respectively.

Scorecard1 real difference · 9 level
Caffeine Tracker versus Ioppy: the parameters behind the verdict, then further details
ParameterCaffeine TrackerIoppy
PriceFreeFree
Rating4.9 (40 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings40 — better—
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size45 MB12 MB
Age rating4+4+
DeveloperDay Well Spent LLCNova Host FCO S.r.l.

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

Ioppy

Subscriptions2
  • Slimmy Premium Monthly$4.991 Month
  • Slimmy Premium Yearly$39.991 Year

Questions

Is Caffeine Tracker free?
Caffeine Tracker is free to download, with in-app purchases available.
Is Ioppy free?
Ioppy is free to download, with in-app purchases available.
Do Caffeine Tracker or Ioppy have ads?
Neither Caffeine Tracker nor Ioppy shows ads.
Which is updated more often, Caffeine Tracker or Ioppy?
Caffeine Tracker ships an update every 5 days, and Ioppy every 3 days. Most recently, Caffeine Tracker was updated on October 22, 2026 and Ioppy on October 18, 2026.

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