Comparison

FastZen vs WeekFit

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

Head to head
About

FastZen

This app helps you manage your intermittent fasting journey with custom schedules, progress tracking, and smart reminders. Achieve your weight loss and energy goals with a clean, intuitive interface and motivational features.

Highlights
  • Custom fasting schedules (16:8, 20:4, OMAD, up to 168 hours)
  • Progress tracking with history, streaks, and insights
  • Smart reminders for fasting start and end times
  • Achievements and milestones for motivation
  • Calendar view of completed fasts
  • Light and dark mode
  • Widgets
Read full description

Fasting made simple — and actually enjoyable. FastZen is a beautifully designed intermittent fasting tracker that helps you reach your goals with 16:8, 18:6, 20:4, OMAD and extended fasts. Whether you want to lose weight, build healthier habits or simply feel better, FastZen keeps you motivated from your first hour to your finish line. WHY YOU'LL LOVE FASTZEN • EFFORTLESS TRACKING — Start any fast in one tap. A live countdown and a smooth progress ring show exactly where you are. • LOCK SCREEN & DYNAMIC ISLAND — Follow your fast at a glance with Live Activities, without even opening the app. • APPLE HEALTH SYNC — Fasting sessions and your weight are saved to Apple Health automatically. • BODY TRACKING — Log your weight and water intake and watch your progress trend over time. • 16 PROTOCOLS + CUSTOM PLANS — From beginner-friendly 12:12 and 16:8 to 24, 48 and 72-hour fasts — or create your own schedule. • SMART REMINDERS — Get notified when your eating window opens and closes, and never miss the end of a fast. • CHALLENGES & STREAKS — Stay consistent with weekly challenges and keep your streak alive. • PROGRESS YOU CAN SEE — Weekly charts, a calendar heatmap and clear stats show how far you've come. • PRIVACY FIRST — Your fast is hidden when you switch apps, and you can export your data anytime. HOW IT WORKS 1. Answer a few quick questions so we can tailor a plan to your goals. 2. Pick your protocol — 16:8, 20:4, OMAD or fully custom. 3. Start your first fast and let FastZen handle the rest. FASTZEN PREMIUM FastZen is a subscription app. Every plan begins with a 7-day free trial, and you can cancel anytime in your App Store account settings before the trial ends. Your fasts, history and progress stay saved across all your devices via iCloud. Terms of Use: https://sites.google.com/view/mefjudevllc/terms-conditions Privacy Policy: https://sites.google.com/view/mefjudevllc/privacy-policy

About

WeekFit

Plan and log your strength training with a weekly schedule. Automatically carry over previous weights and reps, track personal records, and view your progress. Integrates with Apple Health and Apple Watch for a seamless experience.

Highlights
  • Weekly training schedule planner
  • Automatic weight and rep carryover
  • Set-by-set workout logging
  • Personal record tracking
  • Apple Watch integration
  • Apple Health sync
  • Custom exercises and templates
Features
Read full description

WeekFit is a simple workout tracker and weekly training planner for people who want to train steadily without overthinking every session. It helps you know what to do today, follow a weekly routine, and log sets, reps, and weight quickly while you are at the gym. What you can do with WeekFit: - Create a weekly workout plan with guided AI plan generation - Browse ready-made plans and choose by goal, focus, experience, equipment, days per week, and session length - Build your own weekly split with training days and rest days - Log sets, reps, weight, warm-up sets, and rest time - Use rest timer alerts to stay on track between sets - Review workout history, volume, duration, and PRs - Train from Apple Watch - Check your plan and progress with Home Screen widgets - Explore an expanded exercise library with 190 movements and animations WeekFit is designed to feel calm, practical, and beginner-friendly. No pressure, no noisy social feed, and no unrealistic promises. Train consistently. Progress naturally.

Screenshots

FastZen3 screens
WeekFit4 screens

Verdict

The call

The clearest difference is in-app purchases: WeekFit at none against FastZen's 5. WeekFit also leads on iOS requirement (18 vs 26.0). On price, rating, ratings volume and update cadence 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. FastZen sells 5 in-app purchases, starting at $1.99 per 7 days. WeekFit asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for FastZen against 4.9 for WeekFit. Both are backed by a comparable volume of ratings — 9 and 7 respectively.

UpkeepUpdate frequency

FastZen ships an update every 5 days, WeekFit weekly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
FastZen versus WeekFit: the parameters behind the verdict, then further details
ParameterFastZenWeekFit
PriceFreeFree
Rating5.0 (9 ratings) — better4.9 (7 ratings)
Positive reviews—100.0% of reviews
Number of ratings9 — better7
Update frequencyEvery 5 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS26.018 — better
Further details — not scored
Size27 MB160 MB
Age rating4+4+
DeveloperMefjuDev LLCCONG FAN

Customer experience

FastZen

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

WeekFit

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

FastZen

Subscriptions4
  • Weekly3 Days trial$1.997 Days
  • Monthly$2.991 Month
  • 3 Months$7.993 Months
Show 1 more
  • Yearly$19.991 Year
One-time1
  • Lifetime$39.99
None

WeekFit

No in-app purchases

Questions

Is FastZen free?
FastZen is free to download, with in-app purchases available.
Is WeekFit free?
WeekFit is free to download, with no in-app purchases.
Which has better reviews, FastZen or WeekFit?
FastZen is rated higher. FastZen averages 5.0 out of 5 from 9 ratings, while WeekFit averages 4.9 from 7 ratings.
Do FastZen or WeekFit have ads?
Neither FastZen nor WeekFit shows ads.
Which is updated more often, FastZen or WeekFit?
FastZen ships an update every 5 days, and WeekFit weekly. Most recently, FastZen was updated on October 9, 2026 and WeekFit on October 24, 2026.

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