Comparison

16 vs Simple Fasting

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

Head to head
About

16

This app helps users adopt intermittent fasting by tracking fasting periods, weight changes, and daily water intake. It integrates with Apple Health to import exercise data, providing insights into daily activity alongside dietary progress.

Highlights
  • Fasting tracking
  • Weight tracking
  • Water intake tracking
  • HealthKit integration
  • Fasting progress visualization
Features
Read full description

Now more and more people are trying the new dietary method of intermittent fasting. As a dietary method, intermittent fasting has rapidly become popular worldwide in recent years, attracting a large number of people to try it. This dietary pattern is not only considered an effective weight loss method, but also believed to bring benefits to physical and mental health. What is intermittent fasting? Intermittent fasting is a dietary pattern that cycles between fasting and a normal diet. It doesn't specify which foods you should eat, but when you should eat them. Intermittent fasting does not involve tracking calories. This dietary approach is mainly achieved by limiting the daily eating time, rather than by accurately calculating the amount of calories or protein, fat, and carbohydrates consumed. HealthKit: We import your exercise data from Apple Health to help you understand your daily exercise routine. The intermittent fasting app will provide you with: Fasting Tracking: Intermittent fasting is tracked according to your fasting plan, and you can check your fasting progress at any time to see which stage of intermittent fasting your body is currently in. Weight Tracking: Record the trend of weight changes through daily weight check ins. Drinking water tracking: Set daily drinking water goals and track completion status. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Simple Fasting

Features
Read full description

What you can do with Simple Fasting • Track active fasting sessions with a clear, easy-to-read timer • Plan upcoming fasting periods in advance • Review past fasting sessions and monitor your progress over time • Keep your fasting routine organized in one simple place Designed to stay simple Simple Fasting focuses on clarity and ease of use. No clutter, no distractions - just the features you need to support your fasting goals. Whether you’re new to fasting or already experienced, Simple Fasting helps you stay on track and build better habits over time.

Screenshots

164 screens
Simple Fasting4 screens

Verdict

The call

The clearest difference is ads: 16 at none against Simple Fasting's shown. 16 also leads on update cadence (every 9 days vs every 4 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. 16 sells 3 in-app purchases, starting at $1.99 per month and Simple Fasting sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

16 ships an update every 9 days, Simple Fasting every 4 months. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
16 versus Simple Fasting: the parameters behind the verdict, then further details
Parameter16Simple Fasting
PriceFreeFree
Rating4.7 (54 ratings) — better—
Positive reviews77.8% of reviews—
Number of ratings54 — better—
Update frequencyEvery 9 days — betterEvery 4 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size6 MB28 MB
Age rating4+4+
DeveloperHeze Refresh Network Technology Co., LtdUIXLY AS

In-app purchases

3 purchases

16

Subscriptions2
  • Pro (Monthly)$1.991 Month
  • Pro (Yearly)$8.991 Year
One-time1
  • Pro (Lifetime)$17.99
1 purchases

Simple Fasting

One-time1
  • Remove ADs$0.99

Questions

Is 16 free?
16 is free to download, with in-app purchases available.
Is Simple Fasting free?
Simple Fasting is free to download, with in-app purchases available.
Do 16 or Simple Fasting have ads?
Simple Fasting shows ads; 16 does not.
Which is updated more often, 16 or Simple Fasting?
16 ships an update every 9 days, and Simple Fasting every 4 months. Most recently, 16 was updated on October 24, 2026 and Simple Fasting on October 12, 2026.

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