Comparison

Empty vs Ninja Intermittent Fasting

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

Head to head
About

Empty

This app helps you track various fasting methods, including intermittent, circadian rhythm, and custom plans. It provides smart reminders and detailed progress views to support your health goals.

Highlights
  • Intermittent Fasting Tracking
  • Circadian Rhythm Fasting
  • Custom Fasting Plans
  • Smart Reminders
  • Progress Visualization
  • Fasting History
Features
Read full description

Empty is a simple and intuitive fasting tracker used for Intermittent, Circadian Rhythm, and Custom fasting. Choose your favorite fasting type and Empty will track and remind your ongoing progress. Empty supports the following fasting types: 16-Hour Intermittent Fasting (16/8): Popularized by Hugh Jackman (Wolverine) as a efficient way to remove extra weight. 16/8 fasting means eating within a window of eight hours each day such as from 12pm to 8pm and not eating during the remaining 16 hours. It helps get us into the sweet metabolic state of fat burning called Ketosis. Circadian Rhythm Fasting: Based on the research of Dr. Satchin Panda, the confining caloric consumption to about 12-hour period as people did just a century ago. It helps staving off high cholesterol, diabetes and obesity. Custom Fasting: Setup a custom program to meet your fasting goals. You choose your fasting hours per day, and days per week. Features: + Create Custom Fast + Smart Reminder (Remind you when your fasting completes even when the app is turn off) + Create your own custom alarms to fast + View the progress of the current fast + Show the full detail of your fasting days + Show the recent 7 fasts in chart and list + Get the average fasting time right in the Main Interface + Get the total hours of fasting in the Main Interface

About

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.

Highlights
  • Fasting timer and tracker
  • Variety of fasting plans
  • Suitable for all levels
  • Supports keto, low-carb diets
  • Promotes fat burning
  • Detoxification benefits
Features
Read full description

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

Empty4 screens
Ninja Intermittent Fasting4 screens

Verdict

The call

The clearest difference is rating: Empty at 4.5 against Ninja Intermittent Fasting's 4.0. Empty also leads on ratings volume (95 vs 4). Ninja Intermittent Fasting's advantage is review sentiment (100% vs 70%) and iOS requirement (12.0 vs 15.6). On price, update cadence, ads 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. Empty sells 1 one-off in-app purchase and Ninja Intermittent Fasting sells 1 in-app purchase, starting at $2.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Empty holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Empty has 95 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 70% of Empty's written reviews are positive against 100% of Ninja Intermittent Fasting's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Empty ships an update every 6 months, Ninja Intermittent Fasting every 12 months. The most recent releases landed on September 8, 2026 and June 1, 2026 respectively.

Scorecard4 real differences · 6 level
Empty versus Ninja Intermittent Fasting: the parameters behind the verdict, then further details
ParameterEmptyNinja Intermittent Fasting
PriceFreeFree
Rating4.5 (95 ratings) — better4.0 (4 ratings)
Positive reviews70.0% of reviews100.0% of reviews — better
Number of ratings95 — better4
Update frequencyEvery 6 months — betterEvery 12 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size14 MB38 MB
Age rating4+17+
DeveloperThang NguyenDenis Vithani

Customer experience

Empty

All ratings95 ratings
Positive86.3%
Neutral6.3%
Negative7.4%
Written reviews10 reviews
Positive70.0%
Neutral0.0%
Negative30.0%

Ninja Intermittent Fasting

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Empty

One-time1
  • Pro Upgrade$4.99
1 purchases

Ninja Intermittent Fasting

Subscriptions1
  • Access Premium Plan$2.001 Month

Questions

Is Empty free?
Empty is free to download, with in-app purchases available.
Is Ninja Intermittent Fasting free?
Ninja Intermittent Fasting is free to download, with in-app purchases available.
Which has better reviews, Empty or Ninja Intermittent Fasting?
Empty is rated higher. Empty averages 4.5 out of 5 from 95 ratings, while Ninja Intermittent Fasting averages 4.0 from 4 ratings.
Do Empty or Ninja Intermittent Fasting have ads?
Both Empty and Ninja Intermittent Fasting show ads.
Which is updated more often, Empty or Ninja Intermittent Fasting?
Empty ships an update every 6 months, and Ninja Intermittent Fasting every 12 months. Most recently, Empty was updated on September 8, 2026 and Ninja Intermittent Fasting on June 1, 2026.

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