Best Free Intermittent Fasting Apps in 2026

What to look for in a fasting app

A good fasting app should do three things well: start and track your timer, show your history, and stay out of your way. Beyond that, the differences come down to price, privacy, and how much complexity you actually need.

Here is an honest comparison of four popular intermittent fasting apps.

Comparison overview

Fast Tracka

Fast Tracka takes a different approach from most fasting apps. It is entirely free with no premium tier, requires no account, and keeps all data on your device.

Strengths:

• Genuinely free with no feature gates or subscription prompts
• No account or sign-up process
• Full feature set available immediately: 7 protocols, schedules, goals, history, charts
• Privacy-first design with on-device data storage
• Editable start times for when you forget to start your timer
• Data export in JSON (backup), CSV (spreadsheets), and PDF (for health professionals)
• Clean, distraction-free interface

Considerations:

• No cloud sync between devices (data is local only)
• No social or community features

Best for: People who want a straightforward fasting timer without subscriptions, accounts, or data collection.

Zero

Zero is one of the most well-known fasting apps. It offers a clean interface and educational content, but many features require a paid subscription.

Strengths:

• Well-designed interface
• Educational articles and fasting content
• Journal feature for tracking how you feel

Considerations:

• Requires an account to use
• Many features locked behind Zero Plus subscription
• Custom protocols require premium
• Fasting history and insights are limited on the free tier
• Ads on the free tier

Best for: People who value guided content and are willing to pay for a premium experience.

Fastic

Fastic combines fasting tracking with meal planning and a social community. It has one of the larger user bases but is heavily focused on upselling to premium.

Strengths:

• Meal plans and recipes alongside fasting
• Active user community
• Water tracking included

Considerations:

• Requires an account
• Aggressive premium subscription prompts
• Core fasting features restricted on free tier
• Heavy app with many features beyond fasting
• Ads on the free tier

Best for: People who want an all-in-one health app with fasting as one component.

Life Fasting

Life Fasting (formerly Life Fasting Tracker) focuses on group fasting and social accountability. It lets you create fasting circles with friends and family.

Strengths:

• Group fasting circles for social accountability
• Simple interface
• CSV data export

Considerations:

• Requires an account
• Fewer fasting protocols than competitors
• No scheduling feature
• Limited customisation on the free tier
• Ads on the free tier

Best for: People who want to fast with friends or family and value social accountability.

Which app should you choose?

It depends on what you value:

• If you want free, private, and simple: Fast Tracka gives you the full feature set with no account, no ads, and no subscription.
• If you want guided education and journaling: Zero’s premium plan offers that, if you are willing to pay.
• If you want meal planning bundled with fasting: Fastic covers more ground, though most of it requires a subscription.
• If you want to fast with a group: Life Fasting’s circles feature is unique.

The fasting app market is dominated by subscription models that lock core features behind paywalls. If you are looking for an app that simply tracks your fasts and gets out of your way, Fast Tracka was built for exactly that.

Disclaimer: This comparison reflects publicly available information as of early 2026. Features and pricing may change. This article is for informational purposes only.