Comparison

O'lin vs Fasting Timer

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

Head to head
About

O'lin

Features
Read full description

O’lin is a clean and simple intermittent fasting tracker designed to help you stay consistent and build healthier habits over time. Whether you’re following 16:8, 18:6, OMAD, or a custom fasting schedule, O’lin gives you the tools to track your routine and understand your progress — without distractions. FEATURES • Fasting schedules — adjust fasting and eating windows to fit your lifestyle • Progress & patterns — understand your fasting habits over time • BMI & weight tracking — track weight with helpful context • Minimal design — focused, calm, and easy to use • One-time purchase — no subscriptions O’lin is built for people who value simplicity, clarity, and consistency. Fast with intention. Stay consistent with O’lin.

About

Fasting Timer

This app tracks intermittent fasting, visualizing your body's biological phases and progress. It offers customizable timers, water tracking, a journal, and gamified elements to motivate users. Monitor body measurements and weight to see your transformation.

Highlights
  • Biological phase tracking
  • Customizable fasting timers
  • Home screen widgets
  • Body measurements and weight tracking
  • Water tracking with reminders
  • Fasting journal
  • Gamified progress with XP and badges
Features
Read full description

Nova Fast is the intermittent fasting tracker that shows you what's really happening inside your body — from fat burning to autophagy and cellular renewal. WHY NOVA FAST? Nova Fast combines a powerful fasting timer with real-time biological phase tracking, beautiful widgets, body measurements, water tracking, a fasting journal, and a gamification system that makes fasting fun and rewarding. BIOLOGICAL PHASE TRACKING See your body's real-time fasting stages. Watch as you transition through 7 phases — from burning glucose to entering ketosis, activating autophagy, and triggering deep cellular repair. Understand the science behind every hour of your fast. SMART FASTING TIMER Start any protocol with one tap. Choose from popular intermittent fasting plans including 16:8, 18:6, 20:4, OMAD (23:1), 14:10, and 12:12 — or create your own custom fasting schedule. HOME SCREEN WIDGETS Keep your fasting progress visible with beautiful widgets. See your timer, current biological phase, and streak right from your home screen or lock screen. BODY MEASUREMENTS & WEIGHT TRACKING Track more than just weight. Log body measurements, see your progress over time, and watch your transformation unfold with detailed charts and trends. WATER TRACKING Stay hydrated during your fasts with built-in water tracking and customizable reminders. Proper hydration is essential for maximizing your fasting results. FASTING JOURNAL Document your fasting journey. Log how you feel, what you ate, your energy levels, and any notes. Look back on your progress and find the patterns that work best for you. GAMIFICATION — EARN XP, LEVEL UP, COLLECT BADGES Fasting should be fun. Earn experience points for every fast, level up your profile through 30 ranks, unlock 29 achievement badges, and build streaks that keep you motivated. Turn healthy habits into a rewarding daily challenge. PERFECT FOR BEGINNERS AND EXPERIENCED FASTERS Whether you're just starting with intermittent fasting or you're an experienced faster looking for a better tracker — Nova Fast has everything you need to succeed. Start your fasting journey today. --- LEGAL: Privacy Policy: http://www.jakubl.com/privacy.html Terms of Use (EULA): http://www.jakubl.com/terms.html SUPPORT: support@jakubl.com X: @jakublaszczyk

Screenshots

O'lin4 screens
Fasting Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Fasting Timer at none against O'lin's 1. Fasting Timer also leads on iOS requirement (17.0 vs 26.0). O'lin's advantage is update cadence (monthly vs every 4 months). On price, ads and device support 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. O'lin sells 1 one-off in-app purchase. Fasting Timer asks for nothing beyond the download.

UpkeepUpdate frequency

O'lin ships an update monthly, Fasting Timer every 4 months. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
O'lin versus Fasting Timer: the parameters behind the verdict, then further details
ParameterO'linFasting Timer
PriceFreeFree
Rating—4.7 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size3 MB10 MB
Age rating4+4+
DeveloperEduard NovohatskyJakub Laszczyk

In-app purchases

1 purchases

O'lin

One-time1
  • O’lin Lifetime$19.99
None

Fasting Timer

No in-app purchases

Questions

Is O'lin free?
O'lin is free to download, with in-app purchases available.
Is Fasting Timer free?
Fasting Timer is free to download, with no in-app purchases.
Do O'lin or Fasting Timer have ads?
Neither O'lin nor Fasting Timer shows ads.
Which is updated more often, O'lin or Fasting Timer?
O'lin ships an update monthly, and Fasting Timer every 4 months. Most recently, O'lin was updated on November 9, 2026 and Fasting Timer on October 31, 2026.

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