Comparison

FastingCat vs Do Not Eat

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

Do Not Eat

Features
Read full description

Do Not Eat is a clean, distraction-free fasting timer for intermittent fasting. Start or stop a fast in one tap, see your progress at a glance on iPhone and Apple Watch, review your fasting history, and track your weight over time. Why you’ll like it: • Simple timer — Start, pause, resume, and save fasts quickly. • iPhone widgets — Check your fasting progress from your Home Screen. • Apple Watch support — See fasting progress from your wrist. • Live Activities — Keep your active fast visible from your Lock Screen and Dynamic Island. • Milestone timeline — See progress markers like 4h, 12h, 16h, 18h, 20h, 24h, 36h, 48h, and 72h with clear status messages. • Smart reminders — Get alerts for goal reached, streaks, and helpful nudges. • Stats and history — Track longest fast, averages, weekly totals, and more. • Weight tracking — Log weight entries and view progress with clean charts. • Custom goals — Choose common presets like 16:8, 18:6, OMAD, or set your own target. • Privacy first — No sign-up, no cloud account, and no tracking. Your data stays on your device. • Designed for focus — Minimal UI, dark-friendly design, and no noisy extras. • One-time purchase — No subscriptions. Made for intermittent fasting: Whether you’re doing 16:8, 18:6, OMAD, or extended fasts, Do Not Eat helps you stay consistent with an easy timer, helpful notifications, clear progress, and at-a-glance tracking across iPhone and Apple Watch. Notes and disclaimer: • Intended for general wellness and time tracking only. • Not a medical device and not medical advice. • If you have a medical condition, are pregnant, or have dietary concerns, talk to a qualified professional before changing eating patterns.

Screenshots

FastingCat4 screens
Do Not Eat4 screens

Verdict

The call

The clearest difference is price: FastingCat at Free against Do Not Eat's $2.99. Do Not Eat's advantage is in-app purchases (none vs 10) and device support (4 vs 1). On update cadence and ads 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

FastingCat is free to download; Do Not Eat costs $2.99 up front. FastingCat sells 10 in-app purchases, starting at $0.99 per month. Do Not Eat asks for nothing beyond the download.

UpkeepUpdate frequency

FastingCat ships an update every 6 days, Do Not Eat every 4 days. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
FastingCat versus Do Not Eat: the parameters behind the verdict, then further details
ParameterFastingCatDo Not Eat
PriceFree — better$2.99
Rating4.9 (55 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings55 — better—
Update frequencyEvery 6 daysEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.013.0 — better
Further details — not scored
Size24 MB27 MB
Age rating4+17+
DeveloperProApps SolutionsUR NOT MY MOM

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
None

Do Not Eat

No in-app purchases

Questions

Is FastingCat free?
FastingCat is free to download, with in-app purchases available.
Is Do Not Eat free?
Do Not Eat costs $2.99, with no in-app purchases.
Do FastingCat or Do Not Eat have ads?
Neither FastingCat nor Do Not Eat shows ads.
Which is updated more often, FastingCat or Do Not Eat?
FastingCat ships an update every 6 days, and Do Not Eat every 4 days. Most recently, FastingCat was updated on October 14, 2026 and Do Not Eat on October 15, 2026.

Other comparisons