IF vs ArcFast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IF
This app simplifies intermittent fasting for weight loss and improved health. It offers personalized meal plans, a fasting tracker with reminders, and a supportive community. Achieve your fitness goals without restrictive dieting.
- Fasting tracker with customizable intervals
- Personalized meal plans and recipes
- Water intake reminders
- Weight and measurement tracking
- Motivational features and community support
- Daily lessons and expert advice
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Intermittent Fasting helps you: lose weight, slim quickly and live healthier. Join our fasting community of over 3 million people. Weight loss with the Nobel Prize-winning method: Optimal fat burning by eating at the right time! The weight loss app with no diet! The IF app makes intermittent fasting easy with more than 40 fasting plans, daily coaching, and recipes designed to boost your weight loss success. The recipes for your eating window are scientifically developed to help prevent cravings while fasting. Weight loss without diet! Use the AI Food Scanner as a calorie tracker: scan your food, track calories, and analyze your macronutrient breakdown (fat, protein, carbohydrates) with a single tap. The ideal food tracker. Healthy recipes tailored to you: whether you're vegan, vegetarian, pescatarian, or eat everything. Add your intolerances and allergies. Choose a nutrition plan, such as Keto or Low Carb. Lose weight without diet and without sacrificing flavor: get started now and download the intermittent fasten app free! Use the fasting tracker (fasting timer) free, including reminders for your intermittent fasting and eating windows. Planning your fasting schedule made simple! A weight loss app that helps you succeed without diet! Intermittent fasting free: - Fasting tracker (fasting planer) free - Choose fasting times and intervals (16:8 – 23:1) - Water tracker - Weight loss tracker, BMI calculator free Advantages of the If-app Premium: - Fasting timer, fasting tracker: when can I eat, when am I fasting? - Calorie counter / calorie tracker: AI food scanner (food tracker) – scan your meals, track calories and macros - 40+ fasting plan with different challenges from 16:8, over 18:6, 20:4 up to 23:1 (OMAD) - 400+ recipes that keep you full and make weight loss easier - Get daily tips & tricks for successful intermittent fasting - Water tracker: Are you drinking enough? We remind you! How much should you drink? We calculate it for you! - Weight loss workouts for extra fat loss, easier weight reduction and body shaping - Challenges for even more success: intermittent fasting with Keto or Low Carb, with positive affirmations, running challenges, squat challenges, HIIT workouts… - Daily intermittent fasting lessons for beginners to fasting pros: nutrition, tips, exercise, sport, mindset, sleep, weight loss - Scientific background and evidence on intermittent fasting - The biggest weight loss pitfalls permanently exposed - Weight loss tracker integrated, lose weight faster with calorie counter / calorie tracker - Anti-yo-yo plan after fasting - Weight loss app, diet app and calorie tracker for men and women - Fasting app and calorie counter / calorie tracker for beginners and advanced users - Nutrition plans: Keto, Low Carb - Nutrition tracker - Start and stop fasting with Apple Watch Motivation - Join the fasting community and connect with people who also want to lose weight - Scientifically proven: Achieve your goals faster together! Personal support - Our experts answer individually and help with every question: support@intervall-fasten.com Effects of intermittent fasting: - Boost fat burning - Use up body fat reserves - Strengthen the immune system - Detox the body, support cell regeneration - Slow down aging: more beautiful skin, younger appearance - Reduce inflammation and allergies - Improve concentration - More energy Intermittent fasting free (Ayuno intermitente gratis): Use the fasting tracker, timer, organize fasting times, receive push notifications, get reminders of fasting times and meal times, track your weight loss progress and success The If-app is no diet app but a life changing weight loss app free by building healthy habits. Get the fasting tracker free! Use the AI Food Scanner (food tracker) as a calorie counter. You get full access to all functions with an in-app purchase. If Intermittent Fasting 16:8, If-app Terms of Use & Privacy Policy: https://intervall-fasten.com/agb/
ArcFast
Track your intermittent fasting with a simple, ad-free timer. Monitor your metabolic phase, view progress charts, and customize your fasting schedule. Includes meal calorie estimates and home screen widgets.
- Ad-free intermittent fasting timer
- Real-time metabolic phase tracking
- Fasting streaks and progress charts
- Customizable fasting schedules
- Home screen widgets
- Meal calorie estimation
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ArcFast is a simple fasting tracker built around a free, no-ads intermittent fasting timer. Start a fast in one tap, follow your fasting window, use reminders and widgets, and review your history without clutter. KNOW YOUR BODY ArcFast displays your current metabolic phase in real-time as you fast: Sugar Burning transitions into Fat Burning, then Ketosis and Deep Ketosis. Stay informed about what's happening inside your body during every fasting window. SEE YOUR PROGRESS Fasting streaks, weekly bar charts, and detailed session history help you spot patterns and celebrate consistency. Review any missed fasts and learn from your patterns over time. BEAUTIFUL THEMES Four carefully crafted themes — Cosmos, Midnight, Cloud, and Linen — let you personalize ArcFast to match your style. Your fasting experience should feel as good as it looks. FLEXIBLE FASTING PLANS Choose from popular presets including 16:8, 18:6, 20:4, 22:2, and OMAD — or create a custom fasting schedule that fits your lifestyle. STAY ON TRACK Daily reminders to start and end your fasts, milestone notifications, and streak nudges keep you accountable without the noise. WIDGETS Add ArcFast widgets to your Home Screen for quick at-a-glance fasting status without opening the app. FOOD SCAN Add quick calorie estimates to your fasting routine. Take a photo of your meal and ArcFast gives you a clear estimate of calories and food items, so you can understand what you eat between fasting windows. Estimates are for guidance only and are not medical or nutritional advice. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: ArcFast at none against IF's shown. ArcFast also leads on rating (5.0 vs 4.8). IF's advantage is ratings volume (2.7K vs 1) and device support (4 vs 1). On price, update cadence, in-app purchases and monetization model 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
Both are free to download. IF sells 14 in-app purchases, starting at $9.99 per month and ArcFast sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
ArcFast holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: IF has 2.7K ratings behind it against 1, so its average is the more settled of the two.
IF ships an update every 3 weeks, ArcFast every 6 weeks. The most recent releases landed on October 29, 2026 and October 12, 2026 respectively.
| Parameter | IF | ArcFast |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (2.7K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 61.0% of reviews | — |
| Number of ratings | 2.7K — better | 1 |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 172 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | 5W APPS GmbH | KYRYL PEKAROV |
Customer experience
IF
ArcFast
Bugs and requests
IF
Reported bugs
4 issues- App locking up and not resetting
- Losing premium version after update
- App not working after one day of use
- Paid version not granting access
Requested features
4 requests- More guidance on the overall process
- Apple Watch companion app
- Improved nutrition section and recipes
- Manual time adjustment option
ArcFast
Not enough reviews yet to summarise bugs or requests.
In-app purchases
IF
- 1 month premium$9.991 Month
- 1 month premium$12.491 Month
- Premium discount$12.993 Months
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- Premium discount$14.493 Months
- 3 months premium$22.993 Months
- 3 months premium$24.993 Months
- 12 months premium$39.991 Year
- 12 months premium3 Days trial$49.991 Year
- 12 months premium$59.991 Year
- Lifetime$4.99
- Lifetime$14.99
- Lifetime$16.99
Show 2 moreShow fewer
- Lifetime$19.99
- Easy Keto$19.99
ArcFast
- Premium Monthly$4.991 Month
- Premium Yearly$39.991 Year









