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

Screenshots

Fasting Tracker Simple4 screens

ZenFast4 screens

Verdict

The call

The clearest difference is iOS requirement: Fasting Tracker Simple at 12.0 against ZenFast's 15.1. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fasting Tracker Simple sells 6 one-off in-app purchases and ZenFast sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 5 level

Fasting Tracker Simple versus ZenFast: the parameters behind the verdict, then further details
Parameter	Fasting Tracker Simple	ZenFast
Price	Free	Free
Update frequency	Every 2 weeks	—
Ads	No	No
In-app purchases	Yes	Yes
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	12.0 — better	15.1
Further details — not scored
Size	64 MB	23 MB
Age rating	17+	4+
Developer	Muhammad bin Yusrat	Beibi Technology Co., Ltd.