Best Caffeine Tracker Apps: An Honest Comparison

Caffeine trackers look interchangeable in the App Store — log a coffee, watch a number. In practice they split into two philosophies. One group treats caffeine as a total: how many milligrams today, versus a limit. The other treats it as a curve: how much is still circulating right now, and when it will be low enough to sleep. Which philosophy you need depends on whether your problem is drinking too much or drinking too late.

Below are five well-known caffeine apps compared against each other and against the one we build. Every fact was checked against each app's own App Store listing in August 2026, and the sources are at the bottom of the page. We have not quoted star ratings or download counts — they move constantly and say nothing about fit.

How did we compare them?

• Platforms. This whole category is iPhone-first; if you are on Android, none of these six will help you, and that is worth knowing before you read further.
• Price model. Free, one-time purchase, and subscription are three different long-term relationships. All three appear below.
• Works offline. Logging a coffee should not need a network. We only mark “yes” where the maker states it.
• Account required. Health data is sensitive, so it is worth knowing whether an app wants a login or keeps everything on the device.

Where a listing does not address a point, the table says not stated. That is not a “no” — it means we could not verify it, and we would rather leave a gap than invent a fact.

The comparison at a glance

HiCoffee — the most complete Apple-ecosystem tracker

HiCoffee is the app most people in this category end up recommending, and the reasons hold up. Its database covers more than 2,500 branded coffee products, and a built-in caffeine calculator estimates the content of homemade drinks such as espresso and pour-over. You can set a caffeine limit based on your own sensitivity and get suggestions against it.

What genuinely sets it apart is the health integration: HiCoffee can look at your long-term resting heart rate and sleep duration to help you see how caffeine may be affecting you. Add rich widgets, strong Apple Watch support, Shortcuts, Health data sync, reliable iCloud sync across devices, Dynamic Type and VoiceOver support, and it is the most thoroughly built app here. It is free to start, with premium unlockable through either a one-time purchase or a subscription — the App Store listing shows an $8.99 permanent unlock among the options. If you want maximum capability and you are already inside the Apple ecosystem, this is the app we would point you to, ours included.

Caffiend — the cheapest way to avoid a subscription

Caffiend is a $1.99 paid-up-front app with no in-app purchases listed at all, and its description is blunt about it: “Caffiend is a one-time purchase—no subscriptions, ever.” For that you get one-tap logging of favourite drinks, a home screen showing daily totals with a graphical breakdown of the past week, and the Caffiend Journal for exploring habits across days, weeks and months with editable entries.

Its distinctive move is tracking hydration alongside caffeine, with both syncing to Apple Health, plus Dark Mode, Siri shortcuts and an Apple Watch app. If your goal is simply “count my coffees, own the app, never think about it again,” Caffiend is the lowest-friction and lowest-cost route in this comparison — cheaper than ours.

RECaf — the one that learns your routine

Joseph Cieplinski's RECaf takes a different angle: rather than waiting for you to remember to log, it studies your intake over time and learns when you usually drink. If you normally have coffee at 10am on Mondays, skip Tuesdays, and have green tea at 7am on Wednesdays, RECaf sends interactive reminders only on those days and at those times — and you can adjust the time and log straight from the notification.

It also supports voice logging through Siri shortcuts with custom recorded phrases, a fully customisable source list with your own caffeine amounts, units and icons, an automatically surfaced list of your most frequent sources, and HealthKit integration for storage. It is free to try for 14 days and then runs on an auto-renewing annual subscription; the App Store listing shows $9.99 per year. If the reason your last tracker failed is that you stopped logging, RECaf is the one specifically engineered against that failure — and it is the better choice for you than a passive tracker like ours.

Caffi — focused on tonight's sleep

Caffi is the most tightly scoped app in the list, and its focus is the question that brings most people to caffeine tracking in the first place: will this coffee still be in me at bedtime? It calculates how much caffeine will remain in your system when you go to sleep, and its “plan your next drink” feature lets you check the effect of an afternoon coffee before you drink it.

Logging is fast thanks to a database of popular beverages from chains including Starbucks, Dunkin', McDonald's, Celsius, Red Bull and Monster, with custom drinks supported, and there are day, week and month trend views showing your most consumed drinks. It is iPhone-only, free to download with Caffi Pro sold as an auto-renewing subscription; the listing shows $5.99. If you want a small, single-purpose bedtime tool and do not mind a subscription, it does that job cleanly.

Caffeine App – Daily Tracker — caffeine and water together

Oleg Mueller's Caffeine App answers three questions on one screen: how much caffeine is in you, when you can sleep, and whether you are drinking enough water. A scrollable 24-hour timeline shows your caffeine curve, the app calculates when you are ready to sleep and can notify you when that time arrives, and water tracking sits alongside with its own goals, reminders and charts.

The Apple Watch support is the strongest here after HiCoffee's: log caffeine and water from your wrist, see daily charts, and use a complication that shows your optimal sleep time. There is Apple Health integration for both caffeine and water, iCloud sync, Dynamic Type and URL scheme support. It is free with an “Unlock Pro” in-app purchase listed at $4.99. If you want one app for both habits with a Watch complication, this is the pick.

HalfCup — ours, and where it fits

Full disclosure: we make this one. Treat this section as the developer's own account, not an independent review.

We built HalfCup around the decay curve rather than the daily total. Every drink you log feeds a half-life model with a 30-minute absorption window, and you get a scrubbable curve you can drag to check your level at any future time, plus a “sleep-ready by” time and a “last safe caffeine time for today.” Because caffeine metabolism varies enormously between people, the personal half-life is adjustable from 2 to 10 hours. The drink database covers 250+ entries across coffee, tea, energy drinks, soda, pills, chocolate and gum, with partial servings, decimal precision and oz or ml units. Daily limits default to the 400 mg FDA figure, and Today, 7-day and 30-day views show averages, trends and peak times. It is a $4.99 one-time purchase, runs 100% offline with zero data collection, no account, no cloud sync and no analytics, and can export a PDF.

Where we would not recommend it: we have no Apple Watch app and no widgets, so if wrist logging matters, Caffeine App or HiCoffee is better. We do not sync to Apple Health or across devices — that is a deliberate consequence of staying entirely offline, but it is a real cost. Our database is 250+ drinks against HiCoffee's 2,500+ branded products. And we cost $4.99 up front against Caffiend's $1.99.

So which one should you install?

• You want the most capable app and use an Apple Watch: HiCoffee.
• You want to pay as little as possible, once: Caffiend.
• You keep forgetting to log: RECaf.
• You only care about bedtime: Caffi.
• You want caffeine and water in one app with a Watch complication: Caffeine App – Daily Tracker.
• You want a detailed decay curve with nothing leaving your phone: ours.

Whichever you choose, the tracker only helps if you log honestly for two weeks. Every app in this list is accurate enough; none of them can compensate for the coffees you do not enter.

This article is for information and education only and is not medical advice. Consult a qualified healthcare provider about your caffeine consumption, especially if you are pregnant, nursing, have a medical condition, or take medications.