Comparison

Empty vs Wow 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

Wow Intermittent Fasting

Features
Read full description

No account. No sign-up, no email, no password. The timer is never locked, and you can cancel a subscription in your iPhone settings — not on some website. Pick a plan, start the clock, and see at a glance how long is left and which stage your body is in. WHAT YOU GET • Fasting clock — a 24-hour dial with your fasting and eating windows and a live countdown. Stop, pause and restart it whenever life happens. • Body stages — digesting, sugar settling, stores running low, fat burning, longer fast. Plain language, approximate hours, no promises. • Plans from 12:12 to 23:1 — start gentle and tighten when you are ready, or take the one the app suggests from your answers. • A break — ill, travelling or on holiday? Pause the plan for a week or two without losing your streak. • Lock Screen widget and Live Activity — how long is left, without opening the app. • Reminders — an hour before your fast starts, when it starts, an hour before it ends, and when it ends. • Water and weight — count your glasses, log your weight, watch the curve move toward your goal. • Apple Health — your weight is read and written back, with your permission. • Backup in your own iCloud — change your phone and your history is still there. Nothing is sent to us. • Dark theme and the system text size, including the largest accessibility sizes. • Eight languages: English, Russian, Ukrainian, Polish, Spanish, Japanese, Korean and Chinese. FREE FOREVER The timer, your plan, the body stages, breaks, reminders, water, weight, the recipes, your streak and the last seven days of history. PREMIUM Your whole history — hours by month and year, your weight against your fasting, hours spent in fat burning — plus a different length for each day of the week and a weekly suggestion from your own days. Premium is a subscription of one month, three months or a year, with a free trial, or a one-time purchase if you prefer. Payment is charged to your Apple Account at confirmation. A subscription renews automatically unless you turn renewal off at least 24 hours before the period ends. Manage or cancel it in your iPhone settings, under your Apple Account. PLEASE NOTE This app is not a medical device and does not give medical advice. Intermittent fasting is not suitable for everyone. Consult your doctor before you start, especially if you are pregnant or breastfeeding, under 18, have diabetes, an eating disorder or any chronic condition. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://vladislava9009.github.io/wow-fasting-legal/privacy.html

Screenshots

Empty4 screens
Wow Intermittent Fasting4 screens

Verdict

The call

The clearest difference is ads: Wow Intermittent Fasting at none against Empty's shown. Wow Intermittent Fasting also leads on update cadence (every 2 days vs every 6 months). On price, in-app purchases, 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. Empty sells 1 one-off in-app purchase and Wow Intermittent Fasting sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Empty ships an update every 6 months, Wow Intermittent Fasting every 2 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Empty versus Wow Intermittent Fasting: the parameters behind the verdict, then further details
ParameterEmptyWow Intermittent Fasting
PriceFreeFree
Rating4.5 (95 ratings) — better—
Positive reviews70.0% of reviews—
Number of ratings95 — better—
Update frequencyEvery 6 monthsEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size14 MB47 MB
Age rating4+4+
DeveloperThang NguyenVladyslava Ostapchuk

In-app purchases

1 purchases

Empty

One-time1
  • Pro Upgrade$4.99
4 purchases

Wow Intermittent Fasting

Subscriptions3
  • Premium for a month$4.991 Month
  • Premium for 3 months$9.993 Months
  • Premium for a year7 Days trial$24.991 Year
One-time1
  • Premium forever$39.99

Questions

Is Empty free?
Empty is free to download, with in-app purchases available.
Is Wow Intermittent Fasting free?
Wow Intermittent Fasting is free to download, with in-app purchases available.
Do Empty or Wow Intermittent Fasting have ads?
Empty shows ads; Wow Intermittent Fasting does not.
Which is updated more often, Empty or Wow Intermittent Fasting?
Empty ships an update every 6 months, and Wow Intermittent Fasting every 2 days. Most recently, Empty was updated on November 2, 2026 and Wow Intermittent Fasting on October 30, 2026.

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