Fasting vs Zero Cal
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fasting
This app simplifies intermittent fasting with visual progress tracking and insights into your body's metabolic zones. It offers various fasting plans, hydration tracking, and achievements to keep you motivated. Advanced features include body tracking, progress photos, and an AI coach for personalized guidance.
- Visual fasting timer with metabolic zone insights
- Multiple built-in and custom fasting plans
- Hydration and weight/body measurement tracking
- Progress photo comparison and time-lapses
- On-device AI fasting coach
- Live Activities integration for Lock Screen and Dynamic Island
- Achievements and shareable progress cards
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FastBreak is a simple intermittent fasting tracker that helps you lose weight, build a routine, and understand your body. Pick a plan like 16:8 or OMAD, tap Start, and follow your fast through fat-burning and ketosis in real time. And it respects you: no account, no social feed, no notification spam. Just you, your fast, and a clean tracker that does its job. Open it only when you actually need it. WHAT YOU GET • One-tap fasting timer with progress ring, countdown, and Live Activity on the Lock Screen and Dynamic Island • Popular plans — 12:12, 14:10, 16:8, 18:6, 20:4, OMAD — plus fully custom schedules • Metabolic zones — see when you enter glycogen depletion, fat burning, and ketosis • AI Coach (premium) — ask anything about your fasting, get answers tuned to your goals • First-meal log — snap a photo to capture what breaks your fast • Weight and body measurement tracking with trend charts and personal records • Progress photos with optional Face ID lock (premium) • Hydration tracking during your eating window • Streaks, weekly consistency, and milestones • Apple Watch app and Siri shortcuts: "Start a fast in FastBreak", "Log a glass of water" • Widgets and Live Activity for instant progress at a glance HOW IT WORKS 1. Pick a plan that fits your day — 16:8 is a strong start, OMAD if you have experience 2. Tap Start. The timer runs in the background; Live Activity shows progress without opening the app 3. Log water, weight, and your first meal as you go — each takes seconds 4. End your fast when ready. Review your streak, trends, and ask Coach what to refine next PRIVATE BY DESIGN No account. No sign-up. No social feed. Your fasting history, weight logs, and progress photos stay on your iPhone. iCloud sync is optional — you control if and when. We don't sell your data, run ad networks, or build social pressure into the app. ABOUT THE SUBSCRIPTION FastBreak is free to use. Premium unlocks the AI Coach, custom plans beyond presets, full fasting history, progress photos with Face ID lock, premium challenges, and expanded daily meal scans. Payment is charged to your Apple ID at the end of the free trial. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period. Manage or cancel anytime in Apple ID Settings. Start fasting — your way, your phone, your data. Terms of Use: https://gofasting.app/en/terms/ Privacy Policy: https://gofasting.app/en/privacy/
Zero Cal
Effortlessly track your daily calorie and macronutrient intake using AI-powered food logging. Choose from voice, text, photo, barcode, or label scanning to quickly log meals and monitor your progress with visual feedback.
- AI-powered food logging
- Log via voice, text, photo, barcode, or label
- Calorie and macro estimates
- Visual progress tracking
- AI food context analysis
- Multi-language support
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Logging food shouldn't take longer than eating it. Zero Cal gives you four quick ways to add a meal: • Describe what you ate in your own words • Take a photo and let AI estimate what's on the plate • Scan a barcode or nutrition label • Search more than four million foods See the whole day The calorie ring shows how much you have left. Protein, carbohydrate, and fat stay beside it, so you can check the numbers without digging through charts. Leave room for real life Your daily goal fills three quarters of the ring. The last quarter is a visible cushion for a bigger dinner or an unplanned snack. You can repeat recent meals, change portions, and follow your progress over 14 days. Ask Zero When you want more context, ask for a short AI read on food quality, processing, fullness, and possible blood sugar impact. What you can do • Log by voice, text, photo, barcode, or label • Get calorie and macro estimates • Edit portions and ingredients • Set personal calorie and macro goals • Search foods, review history, and add past meals again • Use the app in English, Spanish, or Russian • Choose a light or dark theme Zero Cal tracks nutrition. It does not give medical advice. Estimates can differ from the actual food, so check the label or another reliable source when accuracy matters. Zero Cal requires a subscription. Payment is charged to your App Store account. Subscriptions renew automatically unless you cancel at least 24 hours before the current period ends. You can change or cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is monetization model: Fasting at freemium against Zero Cal's subscription. Fasting also leads on ratings volume (19 vs 1). Zero Cal's advantage is rating (5.0 vs 4.8). On price, update cadence, 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
Both are free to download. Fasting sells 14 in-app purchases, starting at $3.99 per 7 days and Zero Cal sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Zero Cal holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fasting has 19 ratings behind it against 1, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.
| Parameter | Fasting | Zero Cal |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (19 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 19 — better | 1 |
| Update frequency | Every 5 days | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium — better | Subscription |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 171 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Eduard Bulava | Oleg Filimonov |
Customer experience
Fasting
Zero Cal
In-app purchases
Fasting
- FastBreak Premium Weekly$3.997 Days
- FastBreak Premium Monthly$6.391 Month
- FastBreak Premium Monthly3 Days trial2 variants$7.991 Month
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- FastBreak Premium Monthly$9.991 Month
- Premium Monthly$14.991 Month
- Premium Monthly3 Days trial$24.991 Month
- Premium Anual$29.991 Year
- FastBreak Premium Annual$31.991 Year
- FastBreak Premium Annual3 Days trial$34.991 Year
- FastBreak Premium Annual$39.991 Year
- FastBreak Premium Jährlich3 Days trial$39.991 Year
- FastBreak Premium Anual3 Days trial$59.991 Year
- Premium Anual3 Days trial$79.991 Year
- Lifetime$79.99
Zero Cal
- Zero Cal Monthly$9.991 Month
- Zero Cal Yearly$89.991 Year









