Comparison

ONE vs Profast

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

Head to head
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

About

Profast

This app helps you track intermittent fasting with a smart timer, personalized phases, and detailed progress insights. It also features an AI food scanner for meal tracking and supports various fasting protocols and religious traditions. Connect with friends for shared fasting challenges.

Highlights
  • Intermittent fasting timer
  • Smart phase tracking
  • AI food scanner
  • Calorie, protein, and water tracker
  • Weight tracking
  • Buddy and group fasting
  • Religious fasting support
Features
Read full description

FAST SMARTER. LIVE BETTER. Profast is the intermittent fasting app built for real life — whether you fast for health, weight loss, or faith. Beautiful timer. Smart phases. Zero ads. No account required. YOUR FAST. YOUR WAY. Choose from 16+ fasting protocols: · 16:8 — the gold standard · 18:6 — for deeper fat burning · 20:4 — advanced fat loss · OMAD — one meal a day · 5:2 — eat normally 5 days, restrict 2 days · 14:10 — perfect for beginners · Custom — set your own hours Start your fast with one tap. Profast does the rest. WHAT YOUR BODY IS DOING Most people fast without knowing what's happening inside. Profast shows you — hour by hour. · Fed State (0–4h) Digesting your last meal · Early Fasting (4–8h) Blood sugar stabilising, insulin dropping · Fat Burning (8–12h) Your body switches to fat for fuel · Ketosis (12–18h) Ketones being produced, mental clarity peaks · Deep Ketosis (18–24h) Peak fat burning · Autophagy (24h+) Cellular repair and renewal begins Watch your body work. Every single fast. TRACK YOUR PROGRESS · Beautiful circular fasting timer · Real-time phase tracking · Edit past fasts anytime · Fasting history calendar · Streak counter — don't break the chain · Milestone badges and challenges · Weekly progress insights · Progress charts and history EAT SMARTER DURING . YOUR EATING WINDOW AI FOOD SCANNER - Point your camera at any plate. Profast instantly identifies your meal and calculates calories, protein, carbs and fat. Works for every cuisine — Indian, Western, Asian, Middle Eastern. CALORIE TRACKER Know exactly what you're consuming during your eating window. Hit your daily calorie goal. PROTEIN TRACKER Fasting reduces your eating window. Make every bite count — track protein to protect muscle. WATER TRACKER Stay hydrated through your fast. Log intake, set daily goals, get reminders throughout the day. WEIGHT TRACKER Log your weight. See your trend. Watch your progress week by week. CELEBRATE EVERY WIN Every fast completion generates a beautiful shareable card — ready for WhatsApp, Instagram Stories, or anywhere you share. · 7-day streak card · 30-day milestone card · Personal best card · Festival completion card Your achievement. Beautifully captured. Instantly shareable. FAST TOGETHER - Buddy Fast Feature · Invite your partner, friend or family to fast with you. See each other's progress live. · Send one-tap cheers. Build combined streaks. GROUP FASTING · Create a group fast for Navratri, Ramzan or any challenge. · Live leaderboard, combined hours, group celebration when everyone completes. RELIGIOUS FASTING Profast supports major religious fasting traditions with auto-populated dates: Ekadashi · Navratri · Karva Chauth · Maha Shivratri · Ramzan · Lent · Good Friday · Ash Wednesday · Yom Kippur · Daniel Fast · Jain fasts One tap to start. Your tradition, respected. PRIVACY. BY DESIGN. Your personal fasting data never leaves your device. · No account required · No ads. Ever. · No data selling · No cross-app tracking · Everything stored locally on your phone We don't see your data. We can't. That's the point. PROFAST PREMIUM Core fasting is free. Always. Premium unlocks everything: · All 16+ fasting plans · AI food scanner · Calorie and protein tracking · All religious fasting modes · Advanced progress charts · All challenges and badges · Unlimited fasting history Cancel anytime through App Store. Fast smarter. Live better. Profast. Terms of Use (EULA): https://profastapp.com/terms Privacy Policy: https://profastapp.com/privacy

Screenshots

ONE4 screens
Profast4 screens

Verdict

The call

The clearest difference is ads: ONE at none against Profast's shown. ONE also leads on iOS requirement (15.1 vs 18.1). Profast's advantage is update cadence (every 9 days vs every 4 weeks). On price, rating, ratings volume and in-app purchases 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 and Profast sells 6 in-app purchases, starting at $4.99 per 7 days. 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 — 5.0 for ONE against 5.0 for Profast. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

ONE ships an update every 4 weeks, Profast every 9 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
ONE versus Profast: the parameters behind the verdict, then further details
ParameterONEProfast
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 4 weeksEvery 9 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Apple Watch
Requires iOS15.1 — better18.1
Further details — not scored
Size49 MB142 MB
Age rating17+4+
DeveloperCreate RushDeepak Sharma

Customer experience

ONE

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Profast

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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
6 purchases

Profast

Subscriptions3
  • Profast Weekly$4.997 Days
  • Profast Monthly$14.991 Month
  • Profast Annual$49.991 Year
One-time3
  • 10 Scan Credits$2.99
  • 50 Scan Credits$8.99
  • 200 Scan Credits$29.99

Questions

Is ONE free?
ONE is free to download, with in-app purchases available.
Is Profast free?
Profast is free to download, with in-app purchases available.
Which has better reviews, ONE or Profast?
ONE and Profast are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do ONE or Profast have ads?
Profast shows ads; ONE does not.
Which is updated more often, ONE or Profast?
ONE ships an update every 4 weeks, and Profast every 9 days. Most recently, ONE was updated on October 24, 2026 and Profast on October 22, 2026.

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