Comparison

InterFasting vs Fasting Timer & Hydration Log

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

Head to head
About

InterFasting

This app helps users succeed with intermittent fasting through scientific and systematic management. It offers AI-powered schedule and calorie recommendations, a simple timer, and comprehensive tracking of fasting hours, meals, workouts, and water intake. Users can visualize progress and receive detailed reports to build healthy habits.

Highlights
  • AI fasting schedule recommendations
  • AI food calorie calculation
  • Intermittent fasting timer
  • Customizable fasting plans
  • All-in-one health tracking
  • Fasting analysis and reports
  • Home screen widget
Features
Read full description

Ready to make intermittent fasting actually work? InterFasting is the smart fasting tracker and fasting timer that helps you stay consistent without extreme dieting. No more guessing, no complicated calorie counting — just smart tools that actually work. Why people choose InterFasting • AI Schedule Recommendations Get a personalized intermittent fasting plan based on your lifestyle — no more trial and error. • AI Calorie Counter & Food Scanner Just snap a photo of your meal. Instantly see calories and macros without manual logging. • The Easiest Fasting Timer Supports 16:8, 5:2, OMAD, and fully custom schedules. Smart alarms keep you on track. • 100% Free Customization + Ad-Free Experience Adjust your fasting windows freely and track everything in a clean, distraction-free interface. • All-in-One Health Tracker Monitor fasting hours, weight progress, meals, workouts, and water intake in one place. • Home Screen Widgets Check your fasting stage and countdown timer instantly from your home screen. • Hour-by-Hour Body Stages See what’s happening in your body during a fast (Ketosis, Autophagy, and more). • Visual Progress & Photo Diary Log meals and take progress photos to stay motivated by real results. Science-backed benefits of intermittent fasting Effective fat burning and weight loss Boosted autophagy and cellular repair Better blood sugar control Reduced inflammation Improved mental clarity and energy Perfect if you want to start intermittent fasting for the first time, stay consistent with a reliable tracker, or combine fasting with keto and healthy weight loss goals. Consistency is the key. InterFasting helps you build habits that last. Download now and start your transformation. *** Apple Health Integration *** Automatically syncs weight, steps, and workout data with the Apple Health app. ABOUT SUBSCRIPTIONS & PAYMENT • Payment will be charged to your Apple ID account at confirmation of purchase. • You can manage or cancel your subscription in your App Store Account Settings at any time. • Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Terms of Service: https://www.interfasting.app/service_en Privacy Policy: https://www.interfasting.app/privacy

About

Fasting Timer & Hydration Log

Features
Read full description

An intermittent fasting timer that tells you exactly where you are: hours elapsed, hours left, and which metabolic stage your body just entered. Most fasting apps stop at a countdown. This one draws the whole fast on a stage timeline — fed state at 0h, glycogen use at 4h, fat burning at 8h, ketosis at 12h, autophagy at 16h, deep ketosis at 24h — so the number on screen finally means something. Underneath it sits a hydration log, because water is what makes the last four hours bearable, and a Learn library that answers the questions every beginner hits in week one. WHAT YOU GET - Know your fasting window at a glance: a live ring timer with hours elapsed, time remaining and the exact clock time your eating window opens - Follow your body, not just the clock — a metabolic stage timeline that fills in as you pass 4h, 8h, 12h, 16h and 24h - Start in two taps with 16:8, 18:6, 20:4 or OMAD 23:1, and get a completion notification the moment you hit your goal - Hit your water target every day — a 250 / 500 / 750 ml quick-add, a custom amount, an adjustable daily goal and a progress ring for today - See whether it is working: total fasts, average length, longest fast, a consecutive-day streak and a bar chart of your last ten fasts - Close each fast honestly — rate how it felt and your energy level from 1 to 5, then browse the full history of every fast you finished PERFECT FOR - Beginners starting 16:8 who want to know what is happening inside the fast, not just when it ends - OMAD and 20:4 fasters chasing longer ketosis and autophagy windows - Anyone who keeps forgetting to drink water once meals disappear from the day - People who quit fasting before because the hours felt pointless and invisible WHY NOT JUST USE A KITCHEN TIMER? A timer tells you 6:42 is left. It cannot tell you that you crossed into fat burning two hours ago, when your eating window opens tomorrow, how long your streak is, or whether last week's fasts were actually longer than this week's. That context is the difference between counting down and building a habit. PRIVACY Everything stays on your iPhone. No account, no sign-up, no servers — your fasts, water logs and notes are stored on the device and are never uploaded. FULL ACCESS This is a paid app: one plan unlocks everything — all four fasting protocols, the live timer and stage timeline, unlimited history, insights and charts, the hydration log and the full Learn library. Choose weekly, yearly, or a one-time lifetime purchase. No ads at any tier. This app is a fasting timer and hydration log for general wellness, not medical advice. Talk to a doctor before fasting, especially if you are pregnant, diabetic or managing a health condition. Pick 16:8, tap Start, and watch your first stage light up tonight. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com

Screenshots

InterFasting4 screens
Fasting Timer & Hydration Log4 screens

Verdict

The call

The clearest difference is ads: Fasting Timer & Hydration Log at none against InterFasting's shown. InterFasting's advantage is update cadence (every 4 days 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. InterFasting sells 5 in-app purchases, starting at $3.99 per month and Fasting Timer & Hydration Log sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

InterFasting ships an update every 4 days, Fasting Timer & Hydration Log every 5 weeks. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
InterFasting versus Fasting Timer & Hydration Log: the parameters behind the verdict, then further details
ParameterInterFastingFasting Timer & Hydration Log
PriceFreeFree
Rating4.8 (361 ratings) — better—
Positive reviews88.6% of reviews—
Number of ratings361 — better—
Update frequencyEvery 4 days — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size99 MB5 MB
Age rating4+4+
DeveloperLivietPhuc Pham

In-app purchases

5 purchases

InterFasting

Subscriptions4
  • Intermittent Fasting Monthly$3.991 Month
  • Intermittent Fasting Monthly$6.991 Month
  • Intermittent Fasting Annual$12.991 Year
Show 1 more
  • Intermittent Fasting Annual$34.991 Year
One-time1
  • Premium User$12.99
3 purchases

Fasting Timer & Hydration Log

Subscriptions2
  • Ketosis Tracker Weekly$6.997 Days
  • Eating Window Yearly$34.991 Year
One-time1
  • Autophagy Access, One-Time$69.99

Questions

Is InterFasting free?
InterFasting is free to download, with in-app purchases available.
Is Fasting Timer & Hydration Log free?
Fasting Timer & Hydration Log is free to download, with in-app purchases available.
Do InterFasting or Fasting Timer & Hydration Log have ads?
InterFasting shows ads; Fasting Timer & Hydration Log does not.
Which is updated more often, InterFasting or Fasting Timer & Hydration Log?
InterFasting ships an update every 4 days, and Fasting Timer & Hydration Log every 5 weeks. Most recently, InterFasting was updated on November 6, 2026 and Fasting Timer & Hydration Log on October 28, 2026.

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