Comparison

ZenFast 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

ZenFast

Features
Read full description

ZenFast, fasting that adapts to real life, your schedule rules. Whether you're new or experienced, ZenFast's intelligent tracker syncs with YOUR rhythm. ◇ Dynamic Fasting Windows Smart algorithms adjust fasting phases based on actual meal times - no rigid clocks. ◇ Effortless Logging Tap-to-record with 15-min precision + food emojis. Meal tracking made joyful. ◇ Motivation Engine Live progress ring + calendar heatmap + shareable achievement cards. Celebrate every win. 4 science-backed plans, start your 7-day free trial → Find YOUR sustainable fasting rhythm! *Consult a doctor before fasting. Not a medical solution.* Feel free to contact us: Official Website: https://www.beibitech.com Official Email: zenfast@beibitech.com

About

Simple Fasting

Features
Read full description

Build a consistent fasting routine without the clutter. Simple Fasting is a focused intermittent fasting timer for tracking both fasting and eating windows. Start with one tap, see your progress at a glance, and learn from your own rhythm over time. SIMPLE FASTING AND EATING TRACKING • Start and stop fasting or eating with one tap • Choose a daily fasting target from 8 to 24+ hours • Adjust start times and add periods you missed • Edit completed periods and review your history • Follow your day with a clear fasting and eating ring KEEP YOUR PROGRESS VISIBLE • Follow an active fast from your Lock Screen • See progress in the Dynamic Island • Add the Simple Fasting widget to your Home Screen • Receive helpful reminders and milestone notifications UNDERSTAND YOUR ROUTINE • Compare fasting and eating time across different periods • Discover your usual and longest fasting windows • See when your eating window typically starts and ends • Follow trends, completed windows, and consistency • Review your current streak, best streak, and tracked days STAY MOTIVATED—WITHOUT PRESSURE • Unlock achievements as you keep tracking • Build a streak through consistent daily use • Join an optional 7-day fasting challenge • Read gentle hints designed to support a sustainable routine PRIVATE AND FOCUSED No account is required. Your fasting and eating records are stored locally on your iPhone. Simple Fasting stays focused on your routine. There is no calorie counting, food logging, water tracking, complicated diet planning, or social feed. New users receive 24 hours of full access. Continued access requires a subscription. Available options and prices are shown before purchase. Simple Fasting is a tracking tool and does not provide medical advice. If fasting becomes uncomfortable, eat something. Consult a qualified healthcare professional before making significant changes to your eating routine. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ZenFast4 screens
Simple Fasting4 screens

Verdict

The call

The clearest difference is device support: ZenFast at 3 against Simple Fasting's 1. ZenFast also leads on iOS requirement (15.1 vs 17.0). On price, 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. ZenFast sells 2 in-app purchases, starting at $0.99 per month and Simple Fasting sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 4 level
ZenFast versus Simple Fasting: the parameters behind the verdict, then further details
ParameterZenFastSimple Fasting
PriceFreeFree
Update frequency—Weekly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size23 MB72 MB
Age rating4+4+
DeveloperBeibi Technology Co., Ltd.Oleksandr Kryzhanovskyi

In-app purchases

2 purchases

ZenFast

Subscriptions1
  • All Access (1 month)7 Days trial$0.991 Month
One-time1
  • All Access (lifetime)$4.99
2 purchases

Simple Fasting

Subscriptions2
  • Premium Weekly$4.997 Days
  • Premium Yearly3 Days trial$19.991 Year

Questions

Is ZenFast free?
ZenFast 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 ZenFast or Simple Fasting have ads?
Neither ZenFast nor Simple Fasting shows ads.

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