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App Feature
Zero - Intermittent Fasting helps you plan and track intermittent fasts (16:8, 18:6, 20:4, OMAD, circadian), log meals and calories during eating windows, visualize progress with stats and graphs, journal moods, join challenges, and sync with Google Fit; Zero Plus adds premium content, Fasting Zones, and advanced correlations.
Verdict
Verdict: A polished, motivation-first fasting tracker that’s excellent for most users, with worthwhile premium extras for data-driven fasters.
Who is it for
Best for:
- Beginners wanting guidance, reminders, and simple timers to build a fasting habit
- Intermittent fasters who value clean design, progress graphs, and mood journaling
- Health-conscious users who want insights and Google Fit syncing without ads
Not ideal for:
- Power users needing automated schedule switching by weekday or complex routine automation
- People seeking comprehensive diet plans and macros coaching beyond basic meal logging
- Those who want entirely offline use with deep analytics without a subscription
Real-world User Experience
Users like it:
Clear, no‑ads interface that makes fasting simple; customizable fasting plans alongside popular presets; motivational badges, challenges, and progress charts; positive effects reported on weight, energy, sleep, and routine building; ability to create custom fasts and see community participation.
Users complain about:
Limited automation—no native feature to schedule different fast types by weekday; advanced insights and expert content sit behind the premium paywall.
Is it Worth Paying For?
The free tier is strong (timers, stats, journal, challenges, Fit sync) and sufficient for most users starting or maintaining IF. Zero Plus adds value if you want expert content, Fasting Zones (what’s happening in your body), and advanced statistics with correlation to weight and other markers. If you’re motivated by deeper insights or coaching-style content, the subscription is worthwhile; otherwise, stick with free.
How it Compares to Alternatives
Compared to Fastic, Simple, or BodyFast, Zero stands out for its ad-free polish, science- and guidance-forward content, and mood journaling. BodyFast emphasizes coaching plans; Simple leans into habit education and logging; Fastic has community features and recipes. Zero’s premium analytics and Fasting Zones offer a clearer physiological narrative than many competitors, though routine automation is less advanced than some habit trackers.
Summary
Zero - Intermittent Fasting is a clean, well-regarded fasting companion (4.5 rating, 1M+ downloads) that lowers the friction of IF with a robust timer, preset and custom protocols, progress charts, journaling, and challenges—without ads. It supports meal and calorie logging in eating windows and syncs with Google Fit to map trends. User feedback highlights simplicity, motivation features, and tangible well-being benefits. The main gap is limited automation (e.g., scheduling different fasts for weekdays/weekends). For most, the free tier is more than enough; data-driven users and those wanting curated expert guidance will find Zero Plus a meaningful upgrade.
Ratings
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