Fastly vs Hold Fast
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
Read full descriptionHide full description
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.
Hold Fast
This app provides a clean and reliable timer for intermittent fasting. It offers customizable plans, progress tracking, and live activity updates without ads or clutter. Focus on your fasting goals with an intuitive interface.
- One-tap fasting start
- Live Activity and Dynamic Island timer
- Home and Lock Screen widgets
- Popular fasting plans included
- Sun Up to Sun Down plan
- Fasting history and trend charts
- Start and goal reminders
Read full descriptionHide full description
Fasting works. Remembering when you started, when to stop, and whether you're on track? That's the hard part. Hold Fast makes it effortless. Whatever your reason for fasting, Hold Fast keeps up. Some people fast to manage their weight. Others do it for metabolic health, steady energy, sharper focus, longevity, spiritual practice, or simply the discipline of it. Hold Fast doesn't push one goal on you. It just tracks your fast, cleanly and reliably, so you can focus on why you started. Tap once to start your fast. Watch the timer count up on your Home Screen, Lock Screen, and Dynamic Island, without even opening the app. Hit your goal, log the win, and build a streak you can actually see. That's the whole idea: a fasting app that gets out of your way. No noise, no clutter, no ads. Just a clean timer and the data that keeps you consistent. WHY YOU'LL STICK WITH IT • One tap to start, so your fast is always a glance away • Popular plans built in: 14:10, 16:8, 18:6, 20:4, and OMAD • A unique Sun Up to Sun Down plan that tracks your fast to local sunrise and sunset • Streaks and history that make progress feel real and keep you coming back FEATURES • Live Activity and Dynamic Island for real-time progress • Home Screen and Lock Screen widgets in every size • Full fasting history with a month calendar and weekly trend charts • Start and goal reminders so you never miss your window • Private by design. Your data syncs across your devices through your own iCloud, never our servers • Export your complete history to CSV anytime • Sign in with Apple, or just start as a guest • Beautiful in dark mode, with full Dynamic Type support HOLD FAST PRO Go further with a Pro subscription: • Monthly: $2.99 per month • Yearly: $19.99 per year (best value) • Start free with a 7-day trial Payment will be charged to your Apple Account at confirmation of purchase. Your subscription automatically renews unless it is canceled at least 24 hours before the end of the current period, and your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription anytime in your Apple Account settings. Start your first fast today, and finally hold fast. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://holdfasthq.app/privacy Questions or feedback? Email support@holdfasthq.app. We read every message.
Screenshots
Verdict
The clearest difference is ratings volume: Fastly at 92 against Hold Fast's 2. Hold Fast's advantage is rating (5.0 vs 4.8) and update cadence (every 5 days vs every 10 days). On price, ads, in-app purchases 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. Fastly sells 4 one-off in-app purchases and Hold Fast sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Hold Fast holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fastly has 92 ratings behind it against 2, so its average is the more settled of the two.
Fastly ships an update every 10 days, Hold Fast every 5 days. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.
| Parameter | Fastly | Hold Fast |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (92 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 94.1% of reviews | — |
| Number of ratings | 92 — better | 2 |
| Update frequency | Every 10 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 9 MB | 10 MB |
| Age rating | 12+ | 12+ |
| Developer | Collweb LLC | Byron Soto |
Customer experience
Fastly
Hold Fast
In-app purchases
Fastly
- Coffee$1.99
- Lunch$4.99
- Become a Supporter$4.99
Show 1 moreShow fewer
- Dinner$9.99
Hold Fast
- Monthly$2.991 Month
- Yearly$19.991 Year









