Tazza vs Caffeine Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tazza
This app tracks your caffeine intake and predicts when you'll be sleep-ready based on your unique metabolism. It offers real-time caffeine decay curves, personalized insights, and convenient logging options across multiple devices. Unlock advanced analytics with a one-time purchase.
- Real-time caffeine decay curve
- Personalized metabolism adjustments
- Sleep-ready countdown
- Apple Watch integration
- Live Activities and Dynamic Island support
- Extensive drink library
- Smart notifications
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Tazza is the caffeine tracker that actually knows you. Unlike generic trackers that treat everyone the same, Tazza builds a real-time caffeine decay curve personalized to your unique metabolism, factoring in sensitivity, health conditions, medications, and lifestyle. Watch your caffeine level drop in real-time and know exactly when you're sleep-ready. REAL-TIME CAFFEINE CURVE See your actual caffeine level right now — not a guess, but a pharmacokinetic model personalized to you. Watch the curve update live with every drink you log. SLEEP-SAFE COUNTDOWN "You'll be sleep-ready by 9:47 PM." No more guessing whether that afternoon coffee will keep you up tonight. PERSONALIZED METABOLISM Your body isn't average. Tazza adjusts for pregnancy, smoking, contraceptive use, CYP1A2 medications, and your personal sensitivity level. Your curve. Your body. APPLE WATCH Log drinks from your wrist in one tap. Complications show your current caffeine level at a glance. Smart predictions suggest what you'll drink based on time of day and habits. LIVE ACTIVITIES & DYNAMIC ISLAND Your caffeine status lives on your Lock Screen and Dynamic Island — always visible, always current. No other caffeine tracker has this. WIDGETS EVERYWHERE 8 widget types for Home Screen and Lock Screen. Plus a Control Center button for instant logging. 100+ DRINKS BUILT IN Starbucks, Dunkin', Dutch Bros, Peet's, Tim Hortons, Monster, Celsius, Red Bull, and more. Plus create unlimited custom drinks. SMART NOTIFICATIONS Get reminded before your personal caffeine cutoff, warned when approaching your daily limit, and celebrated for tracking streaks. INSIGHTS THAT MATTER (Premium) Full analytics with weekly trends, streaks, and activity heatmaps. Sleep correlation insights show how caffeine affects your rest. Siri Shortcuts let you log hands-free. Free to use with a generous feature set. No subscriptions, Premium is a one-time $6.99 purchase.
Caffeine Tracker
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Coffee is fine. Coffee at the wrong hour isn't. Sundown works out the last moment you can still have your usual drink and sleep — then shows you what happens if you have one anyway. AN ANSWER, NOT A NUMBER Every other tracker opens on a total. Sundown opens on a sentence: "Last drip coffee by 2:10 PM." The screen is a sky, and the sun sitting on the curve is the caffeine in you right now. The lower it hangs, the closer the day is to done. SEE IT BEFORE YOU DRINK IT Pick a drink, drag the time, and watch tonight change in front of you. A cold brew at 4pm and a cold brew at 6pm are not the same night, and now you can tell which is which. YOUR BODY, NOT AN AVERAGE People clear caffeine at wildly different speeds — the same cup can wear off in three hours or hang around for ten. Smoking roughly halves it. Hormonal contraceptives roughly double it. Set yours in three taps, or by hand. REAL PHARMACOKINETICS Caffeine peaks about an hour after you drink it, not the instant you log it. Sundown models absorption and elimination properly, including the slow-release kind in pre-workout. EVERYTHING THAT HAS CAFFEINE IN IT Drip, pour over, French press, AeroPress, Moka pot, K-Cup, instant, cold brew, nitro, espresso drinks. Black, green, white and oolong tea, matcha, yerba mate, chai. Energy drinks and soda. Plus the caffeine in dark chocolate, in painkillers, and in caffeine pills and gum. Make your own for anything missing. COME DOWN WITHOUT THE HEADACHE Cutting caffeine fast is what causes the headache. Taper plans step you down week by week and never take more than a quarter at a time. ON YOUR PHONE, NOT OURS No account. No sign-in. Your log never leaves the device. Apple Health sync works in both directions. Widgets on the Home and Lock Screen, a reminder 20 minutes before your cutoff, and one-tap logging from Siri and Shortcuts. — Sundown Pro Try everything free for 3 days. After that Pro continues as a monthly or yearly subscription, or a one-time lifetime purchase — your choice, shown in your own currency before you buy. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends. Manage or cancel in Settings on your Apple Account. Deleting the app does not cancel a subscription. Privacy Policy: https://247pro.github.io/sundown-legal/privacy.html Terms of Use: https://247pro.github.io/sundown-legal/terms.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Sundown gives you information, not medical advice. Caffeine content varies by preparation, so every figure is an estimate.
Screenshots
Verdict
The clearest difference is device support: Tazza at 3 against Caffeine Tracker's 1. Caffeine Tracker's advantage is iOS requirement (16.0 vs 26.2). On price, 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
Both are free to download. Tazza sells 1 one-off in-app purchase and Caffeine Tracker sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Tazza | Caffeine Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 26.2 | 16.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 8 MB |
| Age rating | 12+ | 4+ |
| Developer | IVAN ALEJANDRO MUNGUIA CRUZ | Emrah Sinekli |
In-app purchases
Tazza
- Tazza Premium — Lifetime$6.99
Caffeine Tracker
- Sundown Pro Monthly3 Days trial$3.991 Month
- Sundown Pro Yearly3 Days trial$19.991 Year
- Sundown Pro Lifetime$34.99







