Comparison

Fasting Timer vs ONE

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

Head to head
About

Fasting Timer

Features
Read full description

Track your intermittent fasting with ease! Fasting Timer helps you follow popular IF protocols like 16:8, 18:6, 20:4, and OMAD. Watch your progress with a beautiful circular timer and see which fasting phase you're in - from fat burning to ketosis to autophagy. ALL FASTING PHASES FREE: - Fed State (0-4h): Digestion active - Early Fasting (4-8h): Fat burn starting - Fasting State (8-12h): Growth hormone rising - Fat Burning (12-16h): Strong fat burn - Ketosis (16-20h): Mental clarity - Autophagy (20h+): Cell renewal KEY FEATURES: - Beautiful circular countdown timer - Real-time fasting phase tracking - Multiple IF protocols (16:8, 18:6, 20:4, OMAD) - Detailed fasting history - Weekly statistics & streak tracking - Home Screen Widget - No login required - Dark mode design Start your fasting journey today - completely free!

About

ONE

This app simplifies intermittent fasting with a one-tap timer and progress tracker. It guides users through fasting stages, offers various plans, and provides insights into body changes. The focus is on building consistent habits without unnecessary complexity.

Highlights
  • One-tap fasting timer
  • Live fasting stage tracking
  • Multiple fasting plan options
  • Daily streak tracking
  • Weight and water tracking
  • AI-powered progress summaries
  • Offline functionality
Features
Read full description

Fasting made simple. Start a fast in one tap, watch your body move through each stage, and build the streak that actually changes things. ONE is an intermittent fasting tracker for people who want the habit, not the homework. No account. No clutter. Just the timer, the stages, and your progress. CHOOSE YOUR PLAN • 12:12, 14:10, 16:8, 18:6, 20:4 and OMAD (23:1) • Flexi mode for open-ended fasts • A difficulty rating on every plan, so you pick one you'll actually keep • Custom Timer for any length you like — free, no upgrade • Change plan any time. Nothing is locked in. WATCH WHAT'S HAPPENING • Live fasting stages: blood sugar falling, fat burning, ketosis, autophagy • Know exactly when the next stage arrives • Plain-language explanation of what your body is doing, and why STAY ON TRACK • Reminders when your fast starts and ends • A notification as you reach each new stage • Fix your start or end time when life happens • Daily streaks that reward consistency, not perfection • Apple Health: your fasts written out, your weight read in — free SEE YOUR PROGRESS • Every fast logged automatically, nothing to fill in • Your recent fasts, free forever WHAT ONE PREMIUM ADDS • Your full fasting history, not just the last few • AI Coach — weekly and monthly written analysis of how you actually fast, what changed, and what to try next • Trends: streak calendar, fasting-hours charts and weight trend • Protein tracker, with a daily target set from your weight • Water tracking against a goal, right on the timer • Your own Quick Start lengths, tuned to the fasts you really do • Apple Watch app with complications — start and end a fast from your wrist • Home Screen widget and a Live Activity on your Lock Screen The timer, every plan, the stages and the Custom Timer are free. Forever. BUILT TO STAY OUT OF THE WAY • Start fasting in under a minute — no sign-up, no email • Optional account, so your history follows you to a new phone SUBSCRIPTION ONE Premium is an auto-renewing subscription, available monthly or annually. Payment is charged to your Apple Account at confirmation of purchase. It renews automatically unless cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours of the end of that period. Manage or cancel any time in your Apple Account settings. Medical disclaimer: ONE is for general wellness only and does not provide medical advice. Talk to a qualified healthcare professional before starting any fasting programme, particularly if you are pregnant, breastfeeding, diabetic, under 18, or have a history of disordered eating. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.fastingtime.co/privacy

Screenshots

Fasting Timer3 screens
ONE4 screens

Verdict

The call

The clearest difference is in-app purchases: Fasting Timer at none against ONE's 6. Fasting Timer also leads on update cadence (daily vs every 4 weeks) and iOS requirement (13.0 vs 15.1). ONE's advantage is ads (none vs shown) and device support (4 vs 2). On price 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. ONE sells 6 in-app purchases, starting at $2.99 per 7 days. Fasting Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Fasting Timer ships an update daily, ONE every 4 weeks. The most recent releases landed on September 12, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
Fasting Timer versus ONE: the parameters behind the verdict, then further details
ParameterFasting TimerONE
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyDaily — betterEvery 4 weeks
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS13.0 — better15.1
Further details — not scored
Size33 MB49 MB
Age rating4+17+
DeveloperBatuhan SenavciCreate Rush

In-app purchases

None

Fasting Timer

No in-app purchases

6 purchases

ONE

Subscriptions6
  • Standard Weekly$2.997 Days
  • Premium Weekly$4.997 Days
  • Standard Monthly$4.991 Month
Show 3 more
  • Premium Monthly$9.991 Month
  • Standard Yearly$49.991 Year
  • Premium Yearly$99.991 Year

Questions

Is Fasting Timer free?
Fasting Timer is free to download, with no in-app purchases.
Is ONE free?
ONE is free to download, with in-app purchases available.
Do Fasting Timer or ONE have ads?
Fasting Timer shows ads; ONE does not.
Which is updated more often, Fasting Timer or ONE?
Fasting Timer ships an update daily, and ONE every 4 weeks. Most recently, Fasting Timer was updated on September 12, 2026 and ONE on October 1, 2026.

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