Simply Fast vs Ninja Intermittent Fasting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simply Fast
This minimalist app helps you achieve time-restricted fasting goals with a simple, intuitive interface. Configure fasting start times and durations, and receive timely notifications for your fasting and eating windows. No account or sign-in is required.
- Simple and easy-to-use design
- Customizable fasting start times
- Adjustable fasting durations (12-23 hours)
- Fasting and eating window notifications
- No sign-in or account required
- Privacy-focused, no data collection
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Simply Fast is a beautifully simple, no-frills companion for time-restricted eating. Rebuilt from the ground up for the latest iPhone and Apple Watch, it keeps the same clean, one-glance design while feeling right at home on today's devices. Set your window, glance at your progress, and get on with your day. [Features] • Clean, distraction-free design for iPhone and Apple Watch. • Set your fasting start time to any half hour of the day. • Choose a fasting duration from 12 to 23 hours. • A live progress bar shows your current fasting or eating window, with the time remaining at a glance. • Apple Watch complications for modern watch faces, so your window is always one look away. • A notification at the start of each fasting and eating window. • Your schedule stays in sync across iPhone and Apple Watch. • No sign-in, no account, no ads, and no pop-ups. • Private by design: the app collects nothing and sends us no information. [Important] You should consult your doctor before starting or changing a fasting schedule. Simply Fast supports time-restricted eating only, not full-day fasting such as 5:2, and it does not track or store a history of your fasts. [Feedback] We would love to hear from you. Please reach us through the app support page (https://www.mpathy.tech/contact-us). If you find Simply Fast useful, please tell a friend and leave a rating on the App Store. Your support keeps the app going.
Ninja Intermittent Fasting
This app helps users track intermittent fasting for weight loss and improved health. It offers various fasting plans, a timer, and guidance for beginners and advanced users. It supports integration with other nutrition plans and aims to promote fat burning and detoxification.
- Fasting timer and tracker
- Variety of fasting plans
- Suitable for all levels
- Supports keto, low-carb diets
- Promotes fat burning
- Detoxification benefits
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Ninja Intermittent Fasting: Your Ultimate Fasting Tracker for Weight Loss Embark on a transformative weight loss journey with Ninja Intermittent Fasting, the top-rated fasting tracker app designed to help you achieve your health goals. Whether you follow a keto, calorie counting, or low-carb approach, our powerful intermittent fasting app is here to support you every step of the way! Fasting Timer and Tracker: Stay on track with your fasting schedule using our intuitive fasting timer and tracker. Choose Your Ideal Fasting Plan: Select from a variety of fasting plans that suit your lifestyle and preferences. Perfect for Beginners and Advanced Users: Whether you’re new to intermittent fasting or an experienced practitioner, our app caters to users of all levels. No More Yo-Yo Dieting: Say goodbye to fad diets and embrace a sustainable fasting plan for lasting results. 100% Free with Zero Ads: Start your intermittent fasting journey today without any cost or annoying advertisements. The Ninja Intermittent Fasting app harnesses the power of one of the most ancient eating patterns known to mankind, made popular by renowned celebrities like Beyoncé and Hugh Jackman. Discover the numerous benefits of the intermittent fasting diet with our easy-to-follow and effective weight-loss method. Supercharge Your Health with Ninja Intermittent Fasting: Achieve Your Health Goals: Use the power of intermittent fasting to reach your desired body type and overall well-being. Burn Fat and Build Muscle: Experience simultaneous fat loss and muscle gain as you progress on your health journey. Combine with Nutrition Plans: Seamlessly integrate intermittent fasting with other nutrition plans, including Keto, Paleo, and Low Carb diets. Unlock Your Body’s Strength: Tap into your body’s incredible immune system and self-healing mechanisms. Detoxify Your Body: Experience the regenerative effects of fasting, helping your body eliminate toxins and promote cell regeneration. Anti-Aging and Quality of Life: Enhance your longevity and improve your quality of life through the anti-aging benefits of fasting. Alleviate Allergies and Inflammations: Many users have reported a decrease in allergies and inflammations through intermittent fasting. Improve Your Skin: Rejuvenate your skin and achieve a radiant complexion with the transformative power of fasting. Join thousands of satisfied users who have embraced the Ninja Intermittent Fasting lifestyle. Our app offers popular fasting protocols such as the 16-hour fast (16:8) and the circadian rhythm fasting method. Additionally, you’ll find other widely used plans such as 18:6, 20:4, 14:10, and OMAD (one meal a day). Download Ninja Intermittent Fasting, the ultimate fasting tracker app, and kickstart your weight loss journey today! Terms of use : https://intuitive.studio/minimalist/terms/ Terms of Use (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Ninja Intermittent Fasting at Free against Simply Fast's $0.99. Ninja Intermittent Fasting also leads on iOS requirement (12.0 vs 18.0). Simply Fast's advantage is rating (4.5 vs 4.0) and in-app purchases (none vs 1). On review sentiment, ratings volume and device support 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
Ninja Intermittent Fasting is free to download; Simply Fast costs $0.99 up front. Ninja Intermittent Fasting sells 1 in-app purchase, starting at $2.00 per month. Simply Fast asks for nothing beyond the download.
Simply Fast holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Simply Fast ships an update every 2 months, Ninja Intermittent Fasting every 12 months. Both last shipped on November 3, 2026.
| Parameter | Simply Fast | Ninja Intermittent Fasting |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.5 (2 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 2 months — better | Every 12 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 38 MB |
| Age rating | 4+ | 17+ |
| Developer | Mpathy Tech | Denis Vithani |
Customer experience
Simply Fast
Ninja Intermittent Fasting
In-app purchases
Simply Fast
No in-app purchases
Ninja Intermittent Fasting
- Access Premium Plan$2.001 Month
Questions
Is Simply Fast free?
Is Ninja Intermittent Fasting free?
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