Fastly vs Simple Fasting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fastly
This app provides a clean and distraction-free timer for intermittent fasting. It tracks your fasting periods in real-time, offers various popular fasting plans, and automatically monitors fasting phases like fat burning and ketosis. View your history with clear statistics and receive smart reminders.
- Clean fasting timer with real-time tracking
- Multiple intermittent fasting plans
- Automatic fasting phase tracking
- Fasting history with statistics
- Smart reminders for goals
- Minimalist interface
- Dark mode support
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Fastly is a clean, private fasting timer for 16:8, 18:6, OMAD, and custom schedules—without ads, accounts, or distractions. Start a fast with one tap, adjust your start or end time when needed, and see your elapsed time, remaining time, and planned finish at a glance. Fastly keeps the experience focused while giving you the tools you need to understand your routine and track your progress. FOLLOW YOUR FAST See estimated fasting phases based on your elapsed fasting time, including digestion, fat burning, ketosis, and autophagy. Upcoming phase markers make it easy to see what comes next during your fast. TRACK YOUR PROGRESS Review your complete fasting history through clear statistics, charts, and progress insights. Set weight and body fat goals, and optionally connect Apple Health to keep your measurements organized. STAY ON TRACK EVERYWHERE Follow your fasting status from your iPhone, Apple Watch, Home Screen widgets, and complications. Smart reminders help you stay aware of fasting goals and eating windows without unnecessary interruptions. KEY FEATURES • Real-time fasting timer with elapsed and remaining time • Planned fasting end time displayed at a glance • 14:10, 16:8, 18:6, 20:4, OMAD, and custom plans • Estimated fasting phases for digestion, fat burning, ketosis, and autophagy • Upcoming fasting phase markers • Complete fasting history with statistics and charts • Weight and body fat goals with progress benchmarks • Apple Health integration for weight and body fat • Apple Watch app and complications • Home Screen widgets for quick progress checks • Smart fasting and eating-window reminders • Optional private iCloud synchronization • Dark mode and a clean, focused interface PRIVATE BY DESIGN No ads. No third-party analytics. No developer data collection. Your fasting and health information stays on your devices and, when optional synchronization is enabled, in your private iCloud account. IMPORTANT NOTE Fasting phases are estimates based on elapsed time and can vary from person to person. Fastly is intended for general wellness and fasting tracking only. It does not provide medical advice, diagnosis, or treatment. Consult a qualified healthcare professional before making medical or dietary decisions.
Simple Fasting
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What you can do with Simple Fasting • Track active fasting sessions with a clear, easy-to-read timer • Plan upcoming fasting periods in advance • Review past fasting sessions and monitor your progress over time • Keep your fasting routine organized in one simple place Designed to stay simple Simple Fasting focuses on clarity and ease of use. No clutter, no distractions - just the features you need to support your fasting goals. Whether you’re new to fasting or already experienced, Simple Fasting helps you stay on track and build better habits over time.
Screenshots
Verdict
The clearest difference is ads: Fastly at none against Simple Fasting's shown. Fastly also leads on update cadence (every 10 days vs every 4 months). Simple Fasting's advantage is iOS requirement (15.0 vs 17.6). On price, 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
Both are free to download. Fastly sells 4 one-off in-app purchases and Simple Fasting sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Fastly ships an update every 10 days, Simple Fasting every 4 months. The most recent releases landed on September 27, 2026 and September 26, 2026 respectively.
| Parameter | Fastly | Simple Fasting |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (92 ratings) — better | — |
| Positive reviews | 94.1% of reviews | — |
| Number of ratings | 92 — better | — |
| Update frequency | Every 10 days — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 28 MB |
| Age rating | 12+ | 4+ |
| Developer | Collweb LLC | UIXLY AS |
In-app purchases
Fastly
- Coffee$1.99
- Lunch$4.99
- Become a Supporter$4.99
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- Dinner$9.99
Simple Fasting
- Remove ADs$0.99








