Comparison

InOut vs Time to fast!

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

Head to head
About

InOut

This app offers a comprehensive approach to dieting with features like automatic calorie calculation, AI coaching, and a supportive community. Track your meals, workouts, and progress with personalized insights and motivational tools.

Highlights
  • Automatic calorie and nutrient calculation
  • AI-powered personalized coaching and reports
  • Workout and meal logging with photo support
  • Community feed for sharing progress and support
  • Gamified challenges and point system
  • Customizable health habit reminders
  • Intermittent fasting schedule management
Features
Read full description

A diet routine that's actually fun! Quick logging, an AI coach, a supportive community, and game-like motivation — everything a dieter needs, all in one place. Start your diet journey with INOUT today. ■ Smarter, Simpler Dieting with AI - Snap a photo of what you ate and AI measures portions, analyzes nutrients, and logs it for you - Log your workout by weight, sets, reps, or time — AI organizes it and calculates calories burned - Get feedback, meal recommendations, and workout routines from your personal AI diet coach ■ Set Your Diet Goals - Choose the diet type that fits you — Standard, Fitness, Keto, Vegan, and more - Get the ideal carb/protein/fat ratio for your plan - Compare your goal with intake and calories burned to see how much more you can eat ■ Complete Missions, Earn Points, Decorate Your App - Complete daily missions to earn "Apples," INOUT's points - Use Apples to buy items and customize your screen - Build your own "My Room" with hundreds of items and show it off ■ Diet Together, Cheer Each Other On - Share meals, recipes, daily life, workouts, progress photos, and motivation on your feed - Get healthy inspiration from others' diet logs ■ "Diet Battle" — From Sharing to Competing - Start a healthy competition with friends - Everyone's logs — meals, weight, workouts — are shared in real time ■ Cute Daily Notes with Your Own Sticker Diary - Log your mood, sleep, bowel movements, period, and more with cute stickers - Write your own diary entries for more detail ■ Simple Health Tracking — Weight, Water, Supplements, Condition - Log your weight daily and see changes at a glance - Track water intake, supplements, and today's condition ■ Automatic Fasting Schedule - Set your target fasting time for automatic start/end alerts - New to fasting? Follow the guide and try intermittent fasting step by step ■ See Your Body's Changes at a Glance - View weight changes by meals, workouts, and fasting in one graph - Track changes over time with clean graphs and stats - See detailed calorie/nutrient info by day, week, or month ■ Build Healthy Habits with Custom Reminders - Set your own reminders and get notified at your chosen times Consistent logging is the shortcut to diet success! Start your journey with INOUT. —- The following permissions are needed for smooth app use *Optional permissions ■ Camera: To take and upload photos for meals, the community, and more. ■ Photos/Media/Files: To upload photos from your phone for meals, the community, and more. ■ Health (HealthKit): To import your weight, workout, and step count data. *You can still use the app without optional permissions, minus the related features —- INOUT includes subscription purchases. Your Apple account is charged upon purchase confirmation. The new-user discount continues at renewal, but resubscribing after cancellation is charged at the regular price. Cancel up to 24 hours before the period ends, or the subscription auto-renews. Manage or cancel your subscription in your Apple Account. For minors, this confirms a legal guardian consented to the subscription and payment. Terms of Paid Service: https://mynormal.notion.site/Plus-21bc7f5bffa180b980e9cd5c67b03d71?pvs=73 Privacy Policy: https://mynormal.notion.site/20fc7f5bffa1806c8ed0e387ec2b6041?pvs=73

About

Time to fast!

Easily monitor your intermittent fasting schedule with a visual 24-hour timeline. Adjust plans, track progress, and receive timely notifications for fasting and eating periods. Save your results and review past fasting records to stay on track with your health goals.

Highlights
  • Circular 24-hour timeline
  • Adjustable fasting plans
  • Save and edit fasting results
  • Past fasting records review
  • Fasting start/end notifications
  • Pre-set fasting plans
Features
Read full description

Easily track your intermittent fasting schedule with a circular 24-hour timeline that clearly shows your fasting and eating periods. Your current status and remaining time are always at your fingertips. You have the flexibility to adjust your fasting plans at any time and save your results once your fasting window is complete. Plus, you can conveniently access your past fasting records! - Simply press the start/stop button to initiate the timer according to your chosen plan. - Modify your fasting plan on the go, even while the timer is running. - Choose from five pre-set fasting plans and set your meal times with ease. - Edit the start time for the current session during your fasting period. - Save and edit your most recent fasting results during your eating window. - If fasting feels too challenging today, use the 'Break the Fast' button to end it early and save your progress. - To begin fasting a bit earlier today during your mealtime, select the 'Start Fast Early' button to adjust your fasting start time for this session. - Review your fasting records for the past week in a graph and track your progress in the calendar alongside your goal achievements. - Enable notifications to receive fasting start/end alerts.

Screenshots

InOut4 screens
Time to fast!4 screens

Verdict

The call

The clearest difference is in-app purchases: Time to fast! at none against InOut's 40. Time to fast! also leads on ads (none vs shown) and update cadence (every 3 days vs weekly). On price, review sentiment, 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. InOut sells 33 in-app purchases, starting at $7.59 per month. Time to fast! asks for nothing beyond the download.

UpkeepUpdate frequency

InOut ships an update weekly, Time to fast! every 3 days. The most recent releases landed on October 19, 2026 and October 16, 2026 respectively.

Scorecard4 real differences · 6 level
InOut versus Time to fast!: the parameters behind the verdict, then further details
ParameterInOutTime to fast!
PriceFreeFree
Rating4.8 (535 ratings) — better—
Positive reviews70.7% of reviews71.4% of reviews — better
Number of ratings535 — better—
Update frequencyWeeklyEvery 3 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better16.0
Further details — not scored
Size179 MB13 MB
Age rating4+4+
DeveloperMynormal CompanyEunbee Kang

Customer experience

InOut

All ratings535 ratings
Positive94.8%
Neutral3.0%
Negative2.2%
Written reviews99 reviews
Positive70.7%
Neutral14.1%
Negative15.2%

Time to fast!

Written reviews7 reviews
Positive71.4%
Neutral28.6%
Negative0.0%

Bugs and requests

InOut

Reported bugs

5 issues
  • Messaging issues in group chats
  • Inconsistent recording of exercise data
  • Unreliable group battle point tracking
  • Problems with fasting timer and habit reminders
  • Data loss and login issues for some users

Requested features

6 requests
  • Add language options for non-Korean users
  • Improve exercise tracking features
  • Integrate with fitness trackers/smartwatches
  • Enhance food database and search functionality
  • Add more customization options for the app
Show 1 more
  • Improve syncing and data management for overseas users

Time to fast!

Not enough reviews yet to summarise bugs or requests.

In-app purchases

33 purchases

InOut

Subscriptions22
  • 인아웃 Plus - 월간 구독 (스타터)$7.591 Month
  • 인아웃 Plus - 월간 구독 (스타터)$7.991 Month
  • 인아웃 Plus - 스타터 월간 구독1 Month trial$7.991 Month
Show 19 more
  • 인아웃 Plus - 월간 구독 (일반)$8.991 Month
  • 인아웃 Plus - 월간 구독$8.991 Month
  • INOUT Monthly Membership$9.991 Month
  • INOUT Monthly Membership3 Days trial$9.991 Month
  • 인아웃 Plus - 월간 구독 (일반)5 variants$9.991 Month
  • 인아웃 Plus - 연간 구독 (특가)$19.991 Year
  • 인아웃 Plus - 연간 구독 (특가)$25.901 Year
  • 인아웃 Plus - 연간 구독 (특가)$26.901 Year
  • INOUT Annual Membership$26.991 Year
  • INOUT Annual Membership3 Days trial$26.991 Year
  • 인아웃 Plus - 연간 구독 (스타터)2 variants$46.491 Year
  • 인아웃 Plus - 연간 구독 (일반)$46.901 Year
  • 인아웃 Plus - 연간 구독 (스타터)$46.991 Year
  • INOUT Annual Membership$48.991 Year
  • INOUT Annual Membership3 Days trial$48.991 Year
  • 인아웃 Plus - 연간 구독 (일반)2 variants$49.991 Year
  • 인아웃 Plus - 스타터 연간 구독1 Year trial$49.991 Year
  • 인아웃 Plus - 연간 구독 (일반)$53.991 Year
  • 인아웃 Plus - 연간 구독$53.991 Year
One-time11
  • 200 Apples$0.99
  • 200 Apples$1.49
  • 400 Apples$2.49
Show 8 more
  • 400 Apples$2.99
  • 700 Apples$3.99
  • 700 Apples$4.49
  • 1000 Apples2 variants$5.99
  • 1300 Apples$6.99
  • 1300 Apples$7.49
  • 1600 Apples$8.49
  • 2000 Apples$8.99
None

Time to fast!

No in-app purchases

Questions

Is InOut free?
InOut is free to download, with in-app purchases available.
Is Time to fast! free?
Time to fast! is free to download, with no in-app purchases.
Do InOut or Time to fast! have ads?
InOut shows ads; Time to fast! does not.
Which is updated more often, InOut or Time to fast!?
InOut ships an update weekly, and Time to fast! every 3 days. Most recently, InOut was updated on October 19, 2026 and Time to fast! on October 16, 2026.

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