Comparison

Weight Loss Fasting Timer Lyn vs 9toFast

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Weight Loss Fasting Timer Lyn

This app helps you track your intermittent fasting periods with a clean, minimalist interface. It offers customizable timers, timely notifications, and helpful insights into your fasting habits. Widgets and Siri integration provide convenient access to your progress.

Highlights
  • Customizable fasting timer
  • Progress notifications
  • Home and lock screen widgets
  • Fasting pause functionality
  • Vital metrics tracking
  • Siri and Shortcuts integration
Features
Read full description

Lyn is a minimalist intermittent fasting tracker with a clean design and the essential features you need. It fits seamlessly into your routine, makes tracking fasts simple, and proactively provides useful insights. Fasting timer. See clearly how much time remains until you reach your fasting goal or your eating window ends. You can adjust your fasting goal at any time, even during an active fast, if your plans change. Notifications. Lyn notifies you when you reach your goal and when your eating window ends, so you don’t have to keep checking the time. Home Screen and Lock Screen widgets. Keep your progress in view with widgets that show the information that matters most. Fasting pause. Sometimes you need more flexibility in your fasting schedule, such as during holidays or travel. Lyn lets you pause your fasting routine and reminds you to resume it later. Vital metrics. Keep your goal streak for extra motivation and review historical data, including your average eating window length and longest fast. Shortcuts and Siri. Lyn is built exclusively for Apple devices, with deep system integrations. Alongside widgets, you can use Shortcuts to create fasting automations or Siri to start and stop a fast. Privacy policy: https://lyn.software/privacy Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

9toFast

Features
Read full description

9toFast is a clean and intuitive intermittent fasting app designed to help you stay consistent without pressure. Whether you’re fasting for better focus, energy, or health, 9toFast makes it easy to track your progress and feel in control. Stay on track effortlessly • Smart fasting timer: Start, pause, or end your fasts anytime and watch your fasting ring fill in real-time. • Custom fasting plans: Choose from popular plans like 16:8 or 18:6, or set your own window. • Progress dashboard: Visualise your streaks and completion rates at a glance. • Personalised themes: Match your app to your mood with sleek light and dark options. • Simple insights: See how your fasting habits evolve over time with easy-to-read stats. Why users love 9toFast • Minimal design that keeps fasting simple • No clutter, ads, or confusing features • Built for balance, not restriction Perfect for beginners and pros Whether you’re new to fasting or have been doing it for years, 9toFast adapts to your lifestyle. Track your fasts, stay consistent, and celebrate small wins daily. Coming soon • Weight tracking • Calorie Counting • Meal Logging • Health app integrations • Fasting challenges • Custom reminders and streak rewards Start your fasting journey today with 9toFast: the fasting tracker that’s simple, motivating, and built for real life.

Screenshots

Weight Loss Fasting Timer Lyn4 screens
9toFast4 screens

Verdict

The call

The clearest difference is ads: Weight Loss Fasting Timer Lyn at none against 9toFast's shown. 9toFast's advantage is update cadence (fortnightly vs every 2 months) and device support (3 vs 1). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Weight Loss Fasting Timer Lyn sells 2 in-app purchases, starting at $5.99 per year and 9toFast sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Weight Loss Fasting Timer Lyn ships an update every 2 months, 9toFast fortnightly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
Weight Loss Fasting Timer Lyn versus 9toFast: the parameters behind the verdict, then further details
ParameterWeight Loss Fasting Timer Lyn9toFast
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.015.1 — better
Further details — not scored
Size16 MB47 MB
Age rating12+4+
DeveloperMykola HarmashEsther Yekini

In-app purchases

2 purchases

Weight Loss Fasting Timer Lyn

Subscriptions1
  • Lyn Plus Yearly7 Days trial$5.991 Year
One-time1
  • Lyn Plus Lifetime$14.99
3 purchases

9toFast

Subscriptions2
  • Premium Monthly$0.991 Month
  • Premium Yearly$9.991 Year
One-time1
  • Premium Lifetime$19.99

Questions

Is Weight Loss Fasting Timer Lyn free?
Weight Loss Fasting Timer Lyn is free to download, with in-app purchases available.
Is 9toFast free?
9toFast is free to download, with in-app purchases available.
Do Weight Loss Fasting Timer Lyn or 9toFast have ads?
9toFast shows ads; Weight Loss Fasting Timer Lyn does not.
Which is updated more often, Weight Loss Fasting Timer Lyn or 9toFast?
Weight Loss Fasting Timer Lyn ships an update every 2 months, and 9toFast fortnightly. Most recently, Weight Loss Fasting Timer Lyn was updated on October 30, 2026 and 9toFast on October 28, 2026.

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