Comparison

WaterFlow vs Perkly Caffeine Tracker

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

Head to head
About

WaterFlow

This app helps you maintain consistent hydration with smart reminders, quick logging, and insightful tracking. It offers features like custom schedules, Apple Watch integration, and progress monitoring to encourage healthy habits.

Highlights
  • Smart, customizable reminders
  • Fast water logging with custom sizes
  • Track on Apple Watch, widgets, and Live Activity
  • Recover missed entries
  • Hydration insights and progress tracking
  • Apple Health sync
Features
Read full description

Never forget hydration again. WaterFlow helps you stay consistent through busy workdays with smarter reminders, fast water logging, and long-term hydration insights across iPhone, iPad, and Apple Watch. SMART REMINDERS THAT FIT REAL LIFE Set your wake and sleep hours, choose your interval, and build a reminder schedule that respects your day instead of spamming it. FAST WATER LOGGING Add water in seconds with custom cup sizes, widgets, Live Activity, and Apple Watch support. Log in ml or oz and keep your daily goal visible. RECOVER MISSED TRACKING Forgot to log a drink earlier? Add past entries quickly and keep your history accurate even on hectic days. PROTECT YOUR STREAK Stay motivated with streaks, achievements, and progress that make consistency feel rewarding instead of repetitive. HYDRATION INSIGHTS THAT MATTER See daily, weekly, and monthly patterns, understand your routine, and spot what actually helps you drink enough water. APPLE WATCH, WIDGETS, AND LIVE ACTIVITY Track from your wrist, your Home Screen, your Lock Screen, and Dynamic Island without opening the app every time. APPLE HEALTH SYNC Write your water intake to Apple Health and keep your hydration data connected to the rest of your wellness routine. PREMIUM Unlock advanced stats, Apple Watch sync, backup export/import, achievements, and a clean ad-free experience with Monthly, Yearly, or Lifetime options. PRIVACY FIRST WaterFlow does not sell your data. Your hydration history stays under your control. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hknfrt.github.io/privacy

About

Perkly Caffeine Tracker

Features
Read full description

Your morning coffee is still in your bloodstream at midnight. Perkly shows you exactly how much. THE LIVE CURVE One glance shows the caffeine in your system right now, rising and falling in real time. Scroll back through past days and watch last night's espresso still working this morning. LOG IN ONE TAP Nine everyday drinks - espresso, coffee, latte, cold brew, black tea, green tea, matcha, energy drink, cola - in three sizes. Tap, done. Forgot one? Backdate it. PROTECT YOUR SLEEP Set your bedtime and a caffeine target. Perkly computes your personal last call - the latest moment another coffee still fits - and can nudge you once, right before it passes. No streaks, no guilt, no spam. TUNED TO YOUR BODY Caffeine clearance varies from person to person. Tell Perkly if you smoke, take oral contraceptives, are pregnant, or simply feel caffeine strongly, and the curve adapts to your estimated half-life. EVERYWHERE YOU LOOK Home Screen widgets with the live curve, one-tap quick-log buttons, Lock Screen widgets, and a Live Activity that counts down to sleep-ready. PLAYS WELL WITH OTHERS Every drink is written to Apple Health and counts in Crunchly's food diary automatically. PERKLY PRO - PAY ONCE, YOURS FOREVER Full history beyond 3 days, trends across 30 to 365 days, and CSV export. Estimates based on typical values and your settings. Informational only, not medical advice. Part of the Bornly Family. Designed in Denmark. Terms of use: https://bornly.com/terms-of-service/ Medical Disclaimer: We are not doctors and do not give medical advice. Information in our app should not be used as a substitute for seeking medical advice from professional doctors. If you feel ill, experience pain, or have any concerns about your health, please contact your doctor or seek emergency care.

Screenshots

WaterFlow4 screens
Perkly Caffeine Tracker4 screens

Verdict

The call

The clearest difference is ads: Perkly Caffeine Tracker at none against WaterFlow's shown. WaterFlow's advantage is update cadence (every 2 weeks vs every 5 weeks) and device support (3 vs 1). On price 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. WaterFlow sells 3 in-app purchases, starting at $2.99 per month and Perkly Caffeine Tracker sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

WaterFlow ships an update every 2 weeks, Perkly Caffeine Tracker every 5 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
WaterFlow versus Perkly Caffeine Tracker: the parameters behind the verdict, then further details
ParameterWaterFlowPerkly Caffeine Tracker
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.0 — better26.0
Further details — not scored
Size16 MB44 MB
Age rating4+12+
DeveloperHakan FIRATBORNLY ApS

In-app purchases

3 purchases

WaterFlow

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Yearly3 Days trial$14.991 Year
One-time1
  • Premium Lifetime$29.99
1 purchases

Perkly Caffeine Tracker

One-time1
  • Perkly Pro$5.99

Questions

Is WaterFlow free?
WaterFlow is free to download, with in-app purchases available.
Is Perkly Caffeine Tracker free?
Perkly Caffeine Tracker is free to download, with in-app purchases available.
Do WaterFlow or Perkly Caffeine Tracker have ads?
WaterFlow shows ads; Perkly Caffeine Tracker does not.
Which is updated more often, WaterFlow or Perkly Caffeine Tracker?
WaterFlow ships an update every 2 weeks, and Perkly Caffeine Tracker every 5 weeks. Most recently, WaterFlow was updated on October 30, 2026 and Perkly Caffeine Tracker on October 31, 2026.

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