Comparison

Fasten vs Nut AI

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

Head to head
About

Fasten

Features
Read full description

Your fast deserves more than a stopwatch. Fasten is a calm, private fasting companion for every tradition. Choose your faith or protocol and Fasten works out each fast's real start and end time from your location and the tradition's own calendar, counts it down, reminds you on time and keeps an honest record of your practice. 12 TRADITIONS, PLUS INTERMITTENT FASTING • Ramadan, Fajr to Maghrib with local prayer times • Sunnah fasts on Mondays and Thursdays • Orthodox Christian: Wednesdays and Fridays, Great Lent, the Apostles', Dormition and Nativity fasts • Coptic Orthodox and Ethiopian Orthodox fasting seasons • Catholic: Ash Wednesday, Fridays of Lent and Good Friday • Jewish: Yom Kippur, Tisha B'Av and the minor fasts • Hindu vrats and Navratri • Buddhist Uposatha, Jain Paryushana and Das Lakshana • LDS Fast Sunday and the Bahá'í Fast • Intermittent fasting: 16:8, 18:6, 20:4, OMAD or custom • Personal challenges with your own schedule Every plan shows its real rules, so you always know what the fast asks of you. DATES CALCULATED, NOT GUESSED Movable fasts come from built-in astronomical calendars: Hijri months from the new moon, the Hebrew calendar, Hindu lunar days, Western and Orthodox Easter, and Naw-Rúz from the equinox. Prayer and sun times use 13 recognised calculation methods with Standard or Hanafi Asr, matched to your country automatically. It all works offline. A TIMER YOU CAN READ AT A GLANCE A live countdown ring shows how far you are, what remains and the exact window of today's fast. Start, end or skip in a tap. REMINDERS THAT ARRIVE ON TIME Get a reminder before each fast, plus alerts at the start, halfway and the end, all scheduled on your device so they fire even with the app closed. WIDGETS AND LIVE ACTIVITY Keep the countdown on your home screen. On iPhone, a Live Activity follows a running fast on the Lock Screen and in the Dynamic Island. On Android, an ongoing notification does the same. SEE YOUR DISCIPLINE GROW • Calendar with completed, missed and upcoming fasts, plus the Hijri month • Log a past fast with your own times • Streaks, total hours, completion rate and personal bests • Weekly hours and monthly activity charts • A private weekly reflection journal SPEAKS YOUR LANGUAGE English, Arabic, Amharic and Hindi, with a full right-to-left layout for Arabic. PRIVATE BY DESIGN No account. No cloud. No ads. No tracking. Your location, if you share it, is used only to calculate sun and prayer times and never leaves your phone. Export a backup file whenever you like and restore it on a new device. Fasten is free, with no subscriptions or in-app purchases. Start every fast with purpose.

About

Nut AI

Effortlessly track your diet and fitness goals by simply taking a photo of your meals. This intelligent companion analyzes your food, provides accurate calorie and macro breakdowns, and integrates with health platforms to adjust your targets based on activity.

Highlights
  • AI Meal Scanner
  • Smart Macro Tracking
  • Apple Health Integration
  • Hydration Tracking
  • Progress Streaks
Features
Read full description

Welcome to Nut AI, your intelligent, all-in-one nutrition and fitness companion. Say goodbye to tedious manual logging - with Nut AI, tracking your diet is as simple as taking a photo. Whether your goal is to lose weight, build muscle, or simply eat healthier, our advanced AI analyses your meals in seconds to give you accurate calorie counts and macro breakdowns (Protein, Carbs, Fats, and Fibre). KEY FEATURES: AI Meal Scanner: Just snap a picture of your plate! Our AI instantly recognizes your food, estimates portion sizes, and logs the precise nutritional information. Smart Macro Tracking: Keep a close eye on your daily targets with our beautifully designed, premium dashboard. Monitor your protein, carbs, fats, and water intake at a glance. Apple Health Integration: Nut AI seamlessly syncs with Apple HealthKit. Automatically import your daily steps and active calories burned directly into your dashboard so your daily targets dynamically adjust based on your activity. Hydration Tracking: Log your water intake with a single tap and stay hydrated throughout the day. Streaks & Progress: Build healthy habits! Keep your streak alive by hitting your daily goals and view your weekly progress with our aesthetic ring calendar. Nut AI offers a clean, premium user experience that makes tracking your health feel less like a chore and more like a lifestyle. Download Nut AI today and transform the way you track your nutrition! Privacy Policy: https://www.nutaiapp.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fasten4 screens
Nut AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Fasten at none against Nut AI's 3. Nut AI's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement 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. Nut AI sells 3 in-app purchases, starting at $9.99 per month. Fasten asks for nothing beyond the download.

UpkeepUpdate frequency

Fasten ships an update every 2 months, Nut AI every 3 weeks. The most recent releases landed on October 16, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 8 level
Fasten versus Nut AI: the parameters behind the verdict, then further details
ParameterFastenNut AI
PriceFreeFree
Rating—2.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.1
Further details — not scored
Size37 MB83 MB
Age rating4+4+
DeveloperYoel MebrahtuSinghi Jaswanth Reddy

In-app purchases

None

Fasten

No in-app purchases

3 purchases

Nut AI

Subscriptions3
  • Nut AI Monthly Plan$9.991 Month
  • Nut AI Annual (Special Offer)$29.991 Year
  • Nut AI Yearly Plan3 Days trial$39.991 Year

Questions

Is Fasten free?
Fasten is free to download, with no in-app purchases.
Is Nut AI free?
Nut AI is free to download, with in-app purchases available.
Do Fasten or Nut AI have ads?
Neither Fasten nor Nut AI shows ads.
Which is updated more often, Fasten or Nut AI?
Fasten ships an update every 2 months, and Nut AI every 3 weeks. Most recently, Fasten was updated on October 16, 2026 and Nut AI on October 28, 2026.

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