Comparison

Fastinger vs CoreFast

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

Head to head
About

Fastinger

This intermittent fasting tracker prioritizes user privacy with all data stored locally. It offers various fasting protocols, progress tracking, and educational content without ads or account requirements.

Highlights
  • 100% Private Data Storage
  • Multiple Fasting Protocols
  • Progress Tracking & Streaks
  • Phase Education
  • Live Activity & Widgets
  • Health Sync
Features
Read full description

EARLY ACCESS — Download now and unlock ALL premium features FREE forever. Our gift to early adopters. Fastinger is the intermittent fasting tracker that respects your privacy. No account. No data collection. No ads. Ever. Your fasting data stays on YOUR device. WHY FASTINGER? - 100% Private — Everything stored locally. No servers. No tracking. - Timer That Never Breaks — Close the app, force quit, your timer keeps running. - Actually Free — No paywalls blocking basic features. PROTOCOLS 16:8 | 18:6 | 20:4 | OMAD | 36-Hour Extended FEATURES Progress ring | Phase education | Calendar history | Streak tracking | Notifications | Mood logging | Live Activity | Widgets | Health sync | Achievements | Dark mode BUILT DIFFERENT Most fasting apps monetize your health data. Fastinger is built by fasters, for fasters. Your health data is yours alone. Download now. Start your timer. Keep your privacy.

About

CoreFast

This app helps you track intermittent fasting with customizable plans and a live timer. It offers optional food and water logging, and can integrate with health data. Features include reminders, streaks, and social challenges, all while prioritizing user privacy.

Highlights
  • Customizable intermittent fasting plans
  • Live accurate timer
  • Optional food and water logging
  • Apple Health integration for readings
  • Privacy-focused, data stays on device
  • Widgets and Apple Watch app support
Features
Read full description

CoreFast is a calm intermittent fasting tracker that keeps your data on your phone. Pick a plan, tap Start, and see where your fast is at a glance. No account. No ads. No surprise charges. Ending a fast early is recorded neutrally, never as a failure. Today and plans • A live timer that stays accurate if you close the app or go offline • Daily plans from 12:12 to 23:1, plus 5:2, alternate-day, Sunrise to sunset and a custom plan • Each plan explains what a day on it looks like before you switch • Water tracking with your own daily goal • Optional local reminders, with quiet hours • Optional streaks with a weekly rest day, and challenges you choose to join • Longer fasts come with a short sheet on what to expect and when to stop Food log (optional) • Log what you eat during your eating window • Scan packaged foods by barcode (you can turn this off in Settings) • See calories that other apps log to Apple Health Health readings (optional) Connect Apple Health to see last night's sleep, steps, active calories, resting heart rate, HRV and glucose next to your fast. CoreFast only reads; it never writes to Apple Health. Vitals shows your readings over 7 days, 30 days or all time, compared only with your own usual range, and a summary you can share if you choose. Readings are shown as recorded, not as an assessment. Insights and Learn Trends, history and a month calendar show how your fasts have gone. Week on week compares you only with yourself. Learn has 18 short reads in plain language, each with a link to its source. New to fasting? For your first four weeks, Today shows one short tip a day. Circles (optional) Fast alongside a few friends. Share your status, send a cheer, or run a group challenge, like Sugar free or a water goal, with a shared leaderboard. Updates are encrypted and pass through a relay that keeps them for up to 24 hours. Your fasting history and health readings are never sent. Widgets, Watch and Siri • Home Screen, Lock Screen and StandBy widgets; fast details stay hidden while your iPhone is locked • A Live Activity and Dynamic Island countdown • An Apple Watch app with one-tap End and Undo • Siri, Shortcuts, and Controls for Control Center, the Lock Screen and the Action button Private by design Your fasts, food log, water and health readings stay on your device, stored encrypted. They are never sent to us or to any server. If you turn on barcode scanning, only the barcode number is looked up, at Open Food Facts. No account, no ads, no third-party analytics or tracking. Your location is used only if you choose the Sunrise to sunset plan, and is kept on your phone. Export a backup or spreadsheet whenever you like, or delete everything from Settings. A note on safety CoreFast is a tracking tool for general wellness. It is not a medical device and does not give medical advice. Fasting isn't right for everyone: talk to your clinician before you start, especially if you are pregnant, take medicines for diabetes, or have a history of disordered eating. Stop and eat if you feel unwell. A few private questions at the start can switch CoreFast to simple time logging, a quieter app with no streaks or longer plans. Questions or feedback: corefast.support@icloud.com

Screenshots

Fastinger4 screens
CoreFast4 screens

Verdict

The call

The clearest difference is device support: CoreFast at 3 against Fastinger's 1. On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Fastinger against 5.0 for CoreFast. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Scorecard1 real difference · 9 level
Fastinger versus CoreFast: the parameters behind the verdict, then further details
ParameterFastingerCoreFast
PriceFreeFree
Rating5.0 (3 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings34 — better
Update frequency—Daily
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.016.4 — better
Further details — not scored
Size3 MB55 MB
Age rating4+17+
DeveloperAlejandro BeracasaSATISH CHANDRA KOLLI

Customer experience

Fastinger

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

CoreFast

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Fastinger

No in-app purchases

None

CoreFast

No in-app purchases

Questions

Is Fastinger free?
Fastinger is free to download, with no in-app purchases.
Is CoreFast free?
CoreFast is free to download, with no in-app purchases.
Which has better reviews, Fastinger or CoreFast?
Fastinger and CoreFast are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.
Do Fastinger or CoreFast have ads?
Neither Fastinger nor CoreFast shows ads.

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