Simple Fasting App vs H2 flow water fasting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Fasting App
This app simplifies intermittent fasting with a focus on privacy and ease of use. It offers popular fasting schedules, progress tracking, and smart notifications without ads, subscriptions, or data collection.
- Free and private
- Popular fasting schedules
- Progress tracking
- Smart notifications
- Intuitive design
- Customizable themes
- Quick start
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Track intermittent fasting with a clear timer, flexible plans and a history you can return to. Simple Fasting App is free to use, with every feature included and no ads or subscriptions. Start without creating an account. A PLAN THAT FITS YOUR DAY Choose 12:12, 16:8, 18:6, 20:4 or a 24-hour fast, or set your own duration. Adjust the start time if you forgot to start the timer. Finish whenever you need to; reaching your target does not automatically end your fast. YOUR PROGRESS AT A GLANCE See elapsed time, time remaining and your planned finish time. Set an optional completion reminder. Follow your fast with Home Screen widgets, Live Activities and Dynamic Island on supported iPhones. APPLE WATCH AND SIRI Start and finish a fast from your Apple Watch. Your session syncs with your paired iPhone when connectivity is available. Tap the watch dial to open its controls. Use Siri and Shortcuts to manage your fast, ask about time and history, or change the timer display. You can also choose your next plan through a shortcut while your current fast continues. Siri availability depends on language, device and system settings. A HISTORY THAT MAKES SENSE Review completed fasts, average duration, your longest fast and weekly or monthly patterns. Open a day to see its sessions and timeline. Use the roomier iPad layout in portrait or landscape. LEARN AS YOU GO Explore illustrated fasting-stage guides with source links. The stages are general estimates based on elapsed time, not measurements of your metabolism or guarantees of a health result. PRIVATE AND PERSONAL Your fasting records are stored locally on your devices. The app does not collect or sell your fasting data. Paired iPhone–Watch syncing and optional Siri features use Apple system services; details are in the privacy policy. Choose light or dark appearance and your preferred accent color. Available in English, Turkish, German and Spanish. Simple Fasting App is a personal tracking tool and does not provide medical advice. Choose your plan and start when you are ready.
H2 flow water fasting
This app guides users through water fasting with hydration tracking and mindful prompts. It offers science-based tools to support metabolic renewal and help users achieve fasting goals, from short to multi-day protocols.
- Hydration tracking
- Mindful guidance
- Science-based tools
- Fasting preparation
- Milestone celebration
- Metabolic renewal support
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Unlock the full potential of water fasting with H₂flow — designed with insights from experienced fasting practitioners to help you prepare, stay mindful, and celebrate every milestone. Whether you’re completing your first 24-hour fast or optimizing multi-day protocols, H₂flow supports your journey with hydration tracking, mindful guidance, and science-based tools for metabolic renewal. Important Disclaimer: H₂flow is intended for informational and wellness purposes only. It does not provide medical advice and is not a substitute for professional medical consultation, diagnosis, or treatment. Always seek the advice of your physician or another qualified healthcare provider before starting any fasting program, making dietary changes, or making decisions related to your health. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Simple Fasting App at 4.5 against H2 flow water fasting's 3.4. Simple Fasting App also leads on in-app purchases (none vs 2) and review sentiment (77% vs 50%). On price, update cadence, ads and monetization model 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. H2 flow water fasting sells 2 in-app purchases, starting at $2.99 per month. Simple Fasting App asks for nothing beyond the download.
Simple Fasting App holds the better App Store score, 4.5 against 3.4. That said, the two scores are not equally well evidenced: Simple Fasting App has 47 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 77% of Simple Fasting App's written reviews are positive against 50% of H2 flow water fasting's.
Simple Fasting App ships an update every 6 weeks, H2 flow water fasting monthly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Simple Fasting App | H2 flow water fasting |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (47 ratings) — better | 3.4 (5 ratings) |
| Positive reviews | 76.9% of reviews — better | 50.0% of reviews |
| Number of ratings | 47 — better | 5 |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 6 MB | 57 MB |
| Age rating | 4+ | 17+ |
| Developer | Mehmet Emrah Konya | Martijn Nelissen |
Customer experience
Simple Fasting App
H2 flow water fasting
In-app purchases
Simple Fasting App
No in-app purchases
H2 flow water fasting
- H2Flow Pro Monthly$2.991 Month
- H2Flow Pro Yearly$24.991 Year
Questions
Is Simple Fasting App free?
Is H2 flow water fasting free?
Which has better reviews, Simple Fasting App or H2 flow water fasting?
Do Simple Fasting App or H2 flow water fasting have ads?
Which is updated more often, Simple Fasting App or H2 flow water fasting?
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