Comparison

IF vs FastKept

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

Head to head
About

IF

This app simplifies intermittent fasting with a focus on consistency and a calm approach. It offers customizable fasting schedules, clear progress tracking, and hydration reminders without collecting personal data.

Highlights
  • One-tap start/stop for fasting
  • Multiple fasting plan options
  • Customizable fasting schedules
  • Visual progress tracking
  • Weight and BMI tracking
  • Built-in water tracker
  • Private data storage
Features
Read full description

Faster makes intermittent fasting feel simple and calm. No pressure. No extremes. Just a clear way to build a routine that fits your life. This app is designed to help you focus on consistency, not perfection. Intermittent fasting is about when you eat, not about stress or strict rules. Faster gives you structure without forcing you into it. Key features include • One-tap start and stop for fasting sessions • Any fasting plans such as 16:8, 18:6, and 20:4 • Custom fasting schedules that adapt to your lifestyle • Clear fasting phases with simple explanations • Visual progress rings that show where you are in your fast Track progress in a way that makes sense • Clean analytics focused on consistency and streaks • Weight and BMI tracking over time • Easy-to-read insights without overwhelming data • A calm view of your progress Stay hydrated while fasting • Built-in water tracker • Daily hydration goals • Gentle reminders that support your routine Your data stays private • No accounts required • No personal data collected • All information stays on your device Faster is built for real life. Not every day is perfect, and that’s okay. The goal is to keep going, learn from your habits, and move forward at your own pace. Progress, not pressure. Your journey, your pace. Download Faster and make Intermittent Fasting feel lighter! Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vSpk_pAeZBgCkBecxmUZ_qPFRP9VYOCYnvUt3Xb44IJrs2-x8GZTqFxs13XpX3dpoUHDxRuqFQ8Q80q/pub Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

FastKept

Features
Read full description

FastKept is a simple fasting timer that keeps your plans and your full history on your iPhone. You decide when a fast starts and ends. All features free. No account needed. YOUR FAST AT A GLANCE • A live timer ring with time to goal and when your fast ends; tap it to switch between elapsed, remaining and percent • Started earlier? Set the real start time • Your eating window, with when it opens and closes • The last 7 days and today's logs on the same screen • Finish a fast with an optional mood and note PLANS THAT FIT • 12:12, 13:11, 14:10, 16:8, 18:6, 20:4 and 23:1, Flexi with no goal, or your own custom length • A weekly schedule with a different plan on some days, and rest days • Low-intake days for a 5:2 week • Name and save your own plans EVERY FAST IN YOUR HISTORY • Week, month and year charts, and a calendar of every day • A last-16-weeks view • Rolling 7 to 365 days, plus your all-time totals • Add a missed fast or edit the times; overlapping fasts are checked • A consistency count that allows breaks and never rewards fasting longer than your plan OPTIONAL LOGS • Weight, with a weekly trend and a rough date for your goal • Water and drinks, with a daily goal • Ketones, glucose, electrolytes, notes and progress photos that stay on your iPhone • Logs you don't use stay hidden REMINDERS YOU CHOOSE • Planned start, goal reached, 1 hour to goal, eating window opening and closing, weigh-ins and water • See every upcoming reminder in one list MORE • Home Screen and Lock Screen widgets, and a Live Activity in the Dynamic Island • Siri: "Start my fast" and "End my fast" • Apple Health (optional): save weight and water, and read your weight • App lock • Export to CSV or one backup file, and restore it • Light and dark themes, and larger text PRIVATE BY DESIGN Your fasts and logs are stored on your iPhone and are never sold or used for ads. An optional account (18+) can back up your records; progress photos are never uploaded. FREE, WITH AN OPTIONAL AD-FREE PLAN All features are free. The free version shows occasional, dismissible promotions for our own apps only, with no third-party ads. An optional subscription (weekly, monthly or yearly) removes all ads in all our apps on this iPhone. It unlocks no extra features. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage or cancel them in your Apple Account settings. Deleting the app doesn't cancel a subscription. IMPORTANT FastKept is a timer and log, not medical advice. It doesn't measure ketosis or any other body state. It isn't for people under 18, pregnant or breastfeeding, underweight, or with a current or past eating disorder. Talk to a doctor before you start or change a fasting routine, especially if you have diabetes or another medical condition or take medication. Drink water, and stop fasting and eat if you feel dizzy, faint, shaky or unwell. Terms of Use: https://fastkept.com/terms/ Privacy Policy: https://fastkept.com/privacy/

Screenshots

IF4 screens
FastKept4 screens

Verdict

The call

IF and FastKept are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. IF sells 2 in-app purchases, starting at $1.99 per month and FastKept sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
IF versus FastKept: the parameters behind the verdict, then further details
ParameterIFFastKept
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone
Requires iOS18.017.0 — better
Further details — not scored
Size45 MB4 MB
Age rating12+4+
DeveloperSerhii HodlevskyiTimothy Hess

In-app purchases

2 purchases

IF

Subscriptions2
  • Pro Monthly$1.991 Month
  • Pro Yearly3 Days trial$14.991 Year
3 purchases

FastKept

Subscriptions3
  • Ad-free Supporter Weekly$0.997 Days
  • Ad-free Supporter Monthly$2.991 Month
  • Ad-free Supporter Yearly$19.991 Year

Questions

Is IF free?
IF is free to download, with in-app purchases available.
Is FastKept free?
FastKept is free to download, with in-app purchases available.
Do IF or FastKept have ads?
Neither IF nor FastKept shows ads.

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