Comparison

PKURunner vs Water Tracker CoffeeWatch

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

Head to head
About

PKURunner

This non-commercial tool helps students track their running mileage and view exercise progress to meet physical education course requirements. It's developed by students for students to facilitate running check-ins.

Highlights
  • Track running mileage
  • View exercise progress
  • Complete PE course check-ins
  • Non-commercial student tool
Features
Read full description

PKUrunner是由在校学生业余开发,面向全校体育课跑步项目打卡的非商用工具软件。助力同学记录跑步里程、查看锻炼进度,完成体育课程的跑步打卡要求。

About

Water Tracker CoffeeWatch

Monitor your caffeine intake and understand its impact on your body. Visualize your 24-hour metabolism curve and receive personalized insights to optimize focus and sleep.

Highlights
  • Real-time caffeine monitoring
  • 24-hour metabolism curve
  • One-tap drink logging
  • Caffeine trends and history
  • Sleep-friendly reminders
  • Apple Watch integration
  • Widgets and Lock Screen info
Features
Read full description

CoffeeWatch is a caffeine tracking app designed for people who love coffee and also care about how their body feels. For the first time, you can truly see your caffeine level in your body and your 24-hour metabolism curve—no more drinking by gut feel, no more pushing through on sleepless nights. Use data to protect your clarity, focus, and sleep. #Why We Built This App We’re a group of people who’ve survived countless late nights — powered by coffee. A “wake-me-up” cup in the morning, a “keep-me-going” cup in the afternoon, and a “let-me-finish-this-deck” delivery coffee at night. Some days it took five or six cups just to “look okay” in a meeting. But instead of feeling more stable, we ended up with: • Faster heartbeats, trembling hands, anxiety • Feeling more awake at night but sleeping lighter • And waking up even more tired — only to drink again It’s a loop: fatigue → more caffeine → worse sleep → more fatigue. We realized caffeine itself isn’t the enemy — The real problem is that we don’t know our current state. • How much caffeine is still in my body right now? • If I drink this cup, will I still be able to sleep tonight? • Am I already over my safe limit? So we made CoffeeWatch. --- # Features 1. Real-Time Caffeine Monitoring • See exactly how much caffeine (mg) is in your body right now • 24-hour metabolism curve • Clear-out countdown — how long until most caffeine is metabolized • Bedtime residual forecast — how much caffeine remains at your usual bedtime • Sleep-risk hints such as “You might fall asleep later tonight — consider skipping this cup” 2. One-Tap Drink Logging • Built-in drinks: Americano, Latte, Espresso, Cold Brew, Milk Tea, Energy Drink, Tea, Cola, Hot Cocoa, and more • Quick-select common sizes • Manually enter your volume (ml / oz) — caffeine is auto-calculated • Save your favorite drink for one-tap add • Each log instantly updates your timeline and metabolism forecast 3. Trends & History • View daily / weekly / monthly / yearly caffeine trends • Total intake, daily average, over-limit days • “Caffeine-free days” — when your body truly rested • See which drinks contribute most to your intake 4. Sleep-Friendly Reminders • About six hours before bedtime: “Caffeine is still active — tonight may be harder to fall asleep.” • Sleep-readiness states: Calm / Alert / Over-stimulated 5. Deep Apple Watch Integration • Record directly from your wrist — no phone needed • Complications show: – Current in-body caffeine – Metabolism curve – Bedtime residual • Your watch becomes both a quick-log tool and a real-time status indicator 6. Widgets & Lock Screen Info • Show key numbers right on your iPhone Home, Lock, or Standby screens: – Current caffeine level – Total consumed today – Distance from your comfort limit • Pin your go-to drink (e.g., “16 oz Latte”) to a widget for one-tap logging 7. Live Activities / Dynamic Island • Your iPhone’s Dynamic Island continuously displays caffeine level and clear-out countdown • Apple Watch shows real-time status as well --- # Apple Ecosystem Integration • Full support for iOS 26 / watchOS 26 • Liquid Glass UI — clear information, non-intrusive, no panic-inducing visuals • Apple Watch app & complications — check status or log a cup with a simple wrist raise • iOS 26 widgets — available on Home Screen, Lock Screen, and StandBy Mode • HealthKit integration — your health data is used only to help you understand yourself. You’re in full control and can revoke access anytime. --- # Coming Soon • AI Drink Recognition — Snap a photo of your beverage, and CoffeeWatch automatically detects type, volume, and typical caffeine strength to draft a log for you. • Caffeine & Performance Insights — learn how precise timing and dosage can safely enhance training and endurance. --- Privacy Policy: https://coffeewatch.app/privacy-policy Terms of Use: https://coffeewatch.app/terms-of-use Email: support@coffeewatch.app

Screenshots

PKURunner4 screens
Water Tracker CoffeeWatch4 screens

Verdict

The call

The clearest difference is review sentiment: Water Tracker CoffeeWatch at 75% against PKURunner's 10%. Water Tracker CoffeeWatch also leads on rating (4.6 vs 3.0) and update cadence (every 5 days vs every 2 weeks). PKURunner's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 17.0). On price, ads 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. Water Tracker CoffeeWatch sells 3 in-app purchases, starting at $1.99 per 7 days. PKURunner asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Water Tracker CoffeeWatch holds the better App Store score, 4.6 against 3.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 10% of PKURunner's written reviews are positive against 75% of Water Tracker CoffeeWatch's.

UpkeepUpdate frequency

PKURunner ships an update every 2 weeks, Water Tracker CoffeeWatch every 5 days. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

Scorecard7 real differences · 3 level
PKURunner versus Water Tracker CoffeeWatch: the parameters behind the verdict, then further details
ParameterPKURunnerWater Tracker CoffeeWatch
PriceFreeFree
Rating3.0 (2 ratings)4.6 (7 ratings) — better
Positive reviews9.5% of reviews75.0% of reviews — better
Number of ratings27 — better
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS11.0 — better17.0
Further details — not scored
Size35 MB81 MB
Age rating4+4+
Developer嵩 高Shutong Technology

Customer experience

PKURunner

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews21 reviews
Positive9.5%
Neutral23.8%
Negative66.7%

Water Tracker CoffeeWatch

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral25.0%
Negative0.0%

In-app purchases

None

PKURunner

No in-app purchases

3 purchases

Water Tracker CoffeeWatch

Subscriptions2
  • Caffeine Tracker Premium Week3 Days trial$1.997 Days
  • Coffee Watch - Premium Year$29.991 Year
One-time1
  • Caffeine Tracker LifetimeMembership$39.99

Questions

Is PKURunner free?
PKURunner is free to download, with no in-app purchases.
Is Water Tracker CoffeeWatch free?
Water Tracker CoffeeWatch is free to download, with in-app purchases available.
Which has better reviews, PKURunner or Water Tracker CoffeeWatch?
Water Tracker CoffeeWatch is rated higher. PKURunner averages 3.0 out of 5 from 2 ratings, while Water Tracker CoffeeWatch averages 4.6 from 7 ratings.
Do PKURunner or Water Tracker CoffeeWatch have ads?
Neither PKURunner nor Water Tracker CoffeeWatch shows ads.
Which is updated more often, PKURunner or Water Tracker CoffeeWatch?
PKURunner ships an update every 2 weeks, and Water Tracker CoffeeWatch every 5 days. Most recently, PKURunner was updated on October 5, 2026 and Water Tracker CoffeeWatch on October 8, 2026.

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