Comparison

FastingCat vs HeyFast

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

Head to head
About

FastingCat

Master intermittent fasting with a focused timer and science-backed tracking. Monitor your progress with detailed insights, charts, and smart notifications to stay motivated and in control of your fasting journey. Your privacy is prioritized with on-device data storage and no ads.

Highlights
  • Customizable fasting presets
  • Science-backed fasting zone tracking
  • Detailed progress charts
  • Flexible scheduling with grace days
  • Smart notifications
  • Seamless weight logging
  • On-device data privacy
Features
Read full description

FastingCat is the fast, focused way to master intermittent fasting and watch the scale move. The app puts clear metrics and practical tools in your pocket so you can stay consistent, motivated and fully in control—for absolutely free. Why FastingCat? • Simple setup: pick a preset (16-8, 18-6, 20-4, 24-hour, alternate-day or create your own) and start the timer with one tap. • Science-backed tracking: see exactly when you move from Anabolic to Catabolic, Fat Burning, Ketosis, Deep Ketosis and Autophagy. • Deep insights at a glance: total fasting hours, completed fasts, streak length, best streak, grace days used, weight change and more. • Rich charts: overlay weight and fasting windows, follow your progress week over week and celebrate each downward trend. • Flexible scheduling: choose specific weekdays or let FastingCat ignore a set number of grace days so real life never breaks your streak. • Smart notifications: get reminded when your eating window closes, when a zone switches or when it is time to break your fast. • Seamless weight logging: import weight from the Health app or type manually; all data stays on device. • No account required, no ads, no cloud storage. Your privacy stays yours. Power users can: • Fine-tune presets with second-level precision • Track progress in both metric and imperial units How we keep you motivated • Streak tracking rewards consistency • Milestone badges for total hours and longest fast • Detailed fasting zone timeline so you can actually “see” ketosis flip on • Fast completion reports you can share anywhere Who is FastingCat for? • Beginners starting a weight-loss journey • Athletes cutting fat without losing muscle • Biohackers chasing autophagy benefits • Anyone who wants a distraction-free fasting timer with serious stats Disclaimer FastingCat is a lifestyle tracker, not medical advice. Intermittent fasting may not suit everyone. Consult a qualified healthcare professional before making any dietary or exercise changes. Privacy and Terms Your data never leaves your device unless you choose to export it. See the full policies: • Privacy Policy: https://sites.google.com/view/fastingcat-privacy-policy/home • Terms of Use: https://sites.google.com/view/fastingcat-terms-of-use/home

About

HeyFast

This app guides you through personalized intermittent fasting schedules like 16:8 and 14:10. Track your weight, receive reminders, and build sustainable healthy habits for long-term weight management.

Highlights
  • Personalized intermittent fasting plans
  • Multiple fasting schedules (16:8, 14:10, 18:6)
  • Daily weight tracking
  • Progress visualization
  • Healthy habit building tools
  • Reminders and motivation
Read full description

Start your journey toward a healthier lifestyle with an intermittent fasting plan tailored just for you. Choose from schedules such as 16:8, 14:10, or 18:6. Use the fasting timer to manage your fasting and eating windows at your own pace. Whether you prefer a shorter daily schedule or a longer fasting period, choose a routine that fits your day. Check when each fast starts and ends, follow your current window, and adjust your schedule whenever your routine changes. Track your daily weight with the weight tracker to visualize your progress and stay motivated. Regular entries make it easy to review changes over time and keep your progress in perspective. This fasting app helps you focus on sustainable weight management and building long-term healthy habits. If a day does not go as planned, return to your chosen schedule and continue at a pace that works for your lifestyle. Key Features - Intermittent fasting plans (16:8, 14:10, and more) - Fasting timer to monitor the start and end of each fasting period - Weight tracker and daily weight log to monitor your progress - Fasting window and eating window tracking - Fasting reminders and motivation to help you stay consistent Choose a plan, check your current window, record your weight, and turn on reminders when you need them. HeyFast brings these tools together in a simple intermittent fasting tracker that keeps your routine clear and manageable. Choose a plan that fits you Organize your routine with popular schedules such as 16:8, 14:10, or 18:6. Select the plan that works for your day and adjust your eating window whenever your routine changes. Track your progress Record your weight daily and review changes over time. Use your weight history and progress insights to stay consistent and recognize the habits you build day by day. Reminders at the right time Turn on notifications for alerts when your fast starts and ends. Fasting reminders help you follow your routine even on busy days. DISCLAIMER This app does not provide medical services and is not intended for diagnosis or treatment of any disease. If you experience health issues or suspect a medical condition, please consult a qualified healthcare professional. Stay consistent and discover your own rhythm for a healthier, balanced life! --- Terms of Service: https://nomad88.com/heyfast/terms.en Privacy Policy: https://nomad88.com/heyfast/privacy.en Contact: nomad88.software@gmail.com

Screenshots

FastingCat4 screens
HeyFast4 screens

Verdict

The call

The clearest difference is update cadence: FastingCat at every 6 days against HeyFast's every 2 weeks. HeyFast's advantage is iOS requirement (15.0 vs 17.0). 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. FastingCat sells 10 in-app purchases, starting at $0.99 per month and HeyFast sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for FastingCat against 4.9 for HeyFast. Both are backed by a comparable volume of ratings — 56 and 27 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

FastingCat ships an update every 6 days, HeyFast every 2 weeks. Both last shipped on November 5, 2026.

Scorecard2 real differences · 8 level
FastingCat versus HeyFast: the parameters behind the verdict, then further details
ParameterFastingCatHeyFast
PriceFreeFree
Rating4.9 (56 ratings) — better4.9 (27 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings56 — better27
Update frequencyEvery 6 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size24 MB72 MB
Age rating4+17+
DeveloperProApps SolutionsNomad88 Co., Ltd.

Customer experience

FastingCat

All ratings52 ratings
Positive96.2%
Neutral1.9%
Negative1.9%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HeyFast

All ratings27 ratings
Positive92.6%
Neutral7.4%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

FastingCat

Subscriptions5
  • Monthly Donation (Cookie)$0.991 Month
  • Monthly Donation (Donut)$2.491 Month
  • Monthly Donation (Smoothie)$4.991 Month
Show 2 more
  • Monthly Donation (Salad)$7.991 Month
  • Monthly Donation (Protein)$9.991 Month
One-time5
  • One-time Donation (Coffee)$1.99
  • One-time Donation (Sandwich)$4.99
  • One-time Donation (Pizza)$9.99
Show 2 more
  • One-time Donation (Groceries)$24.99
  • One-time Donation (Books)$49.99
3 purchases

HeyFast

Subscriptions2
  • HeyFast Pro - Monthly$1.991 Month
  • HeyFast Pro - Yearly7 Days trial$12.991 Year
One-time1
  • HeyFast Pro Lifetime$24.99

Questions

Is FastingCat free?
FastingCat is free to download, with in-app purchases available.
Is HeyFast free?
HeyFast is free to download, with in-app purchases available.
Which has better reviews, FastingCat or HeyFast?
FastingCat is rated higher. FastingCat averages 4.9 out of 5 from 56 ratings, while HeyFast averages 4.9 from 27 ratings.
Do FastingCat or HeyFast have ads?
Neither FastingCat nor HeyFast shows ads.
Which is updated more often, FastingCat or HeyFast?
FastingCat ships an update every 6 days, and HeyFast every 2 weeks. Most recently, FastingCat was updated on November 5, 2026 and HeyFast on November 5, 2026.

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