Zero Fast vs Ocras
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zero Fast
Track your intermittent fasting journey with an AI-powered coach. Get personalized plans, real-time metabolic insights, and science-backed education to support your weight management and metabolic health goals. Log hydration, weight, and mood to optimize your fasting experience.
- AI Fasting Coach
- Personalized weekly fasting plans
- Multiple fasting profiles
- Real-time metabolic tracking
- Hydration logging
- Weight and progress dashboard
- Apple Health integration
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Your fast, explained as it happens. Zero Fast times your fast, shows you the moment your body switches to fat-burning and ketosis, and lets you race friends in group challenges. No calorie counting. No strict diets.
Ocras
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You don’t need another fasting app begging for your attention and tracking your data. Ocras is a simple fasting app built around one question: am I eating right now, or fasting? Set your eating window once, add a widget to your Home Screen, Lock Screen, or Apple Watch, and that’s pretty much it. Ocras works out your current fasting state from your schedule and shows it at a glance. There’s no need to start or stop a fast manually. No notifications telling you when to eat. No account to create. You shouldn’t have to open the app several times a day just to keep a fasting timer accurate. If it’s 3pm on a Tuesday, Ocras should simply be able to tell you at a glance whether you’re inside your eating window, without you unlocking your phone. What Ocras does * Set a different eating window for each day of the week, or use the same schedule every day * Choose from common schedules like 16:8, 18:6, 20:4 and OMAD, or make your own * Add widgets to your Home Screen and Lock Screen * Add widgets and complications to your Apple Watch * Choose from different widget styles, including the original designs, retro-inspired widgets and vaporwave themes * Check your fasting status without opening the app * Works completely offline - no cloud needed What Ocras deliberately does not do: * There are no notifications. * There’s no social feed or sharing. * There’s no account to maintain. * There’s no internet connection required for the core app (only if you want to unlock the additional widgets). * Your schedule and fasting data stay on your device - Ocras does not track anything about you. The aim is to keep Ocras useful without turning fasting into another thing you need to manage. Still growing: I’m continuing to add new widget designs, including more customisation options, and support for longer multi-day fasts is planned too. For now, Ocras is intentionally small: set your schedule, put a widget somewhere useful, and get on with your day. Set once. Glance when you need it. Happy fasting!
Screenshots
Verdict
The clearest difference is in-app purchases: Ocras at none against Zero Fast's 2. Ocras also leads on update cadence (every 4 days vs every 2 weeks) and iOS requirement (18.0 vs 26.0). On price, ads 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
Both are free to download. Zero Fast sells 2 in-app purchases, starting at $6.99 per month. Ocras asks for nothing beyond the download.
Zero Fast ships an update every 2 weeks, Ocras every 4 days. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.
| Parameter | Zero Fast | Ocras |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 53 MB |
| Age rating | 12+ | 4+ |
| Developer | APPE LATTE LIMITED | CONOR LUDDY |
In-app purchases
Zero Fast
- Zero Fast Monthly$6.991 Month
- Zero Fast Annually$49.991 Year
Ocras
No in-app purchases









