Best Intermittent Fasting Apps in 2026

Last Updated on August 10, 2026

Intermittent fasting works best when you can actually stick to it — and the right app makes that far easier. Whether you want a simple timer, a guided plan, or an all-in-one weight loss companion, here are the best intermittent fasting apps in 2026 and who each one is right for.

What to look for in an intermittent fasting app

• Flexible fasting protocols — support for 16:8, 18:6, OMAD and custom schedules, not just one preset.
• Food and calorie tracking — fasting alone rarely delivers lasting results without some awareness of what you eat.
• Guidance and education — clear, science-based content so you understand why, not just when.
• Ease of logging — the faster it is to track a meal or start a timer, the more likely you are to keep going.
• Cross-platform — availability on both iOS and Android, with a free version to start.

Quick comparison

App	Best for	Fasting protocols	Food / calorie tracking	AI features	Platforms
Kompanion	All-in-one weight loss	Yes (flexible)	Yes (calorie + macros)	AI photo meal analysis	iOS & Android
Zero	Simple fasting + education	Yes	Limited	Basic	iOS & Android
Fastic	Beginners & motivation	Yes	Basic	Basic	iOS & Android
BodyFast	Guided fasting plans	Yes	Limited	Coach plans	iOS & Android
Simple	Holistic wellness	Yes	Basic	AI coach	iOS & Android
DoFasting	Fasting + meal ideas	Yes	Basic	Basic	iOS & Android

Features change often, and pricing varies — always check each app’s App Store or Google Play listing for the latest details before deciding.

The best intermittent fasting apps in 2026

Kompanion — best all-in-one for sustainable weight loss

Kompanion stands out by combining the tools most people otherwise juggle across several apps: flexible fasting timers, a GLP-1 tracker, AI photo meal analysis, calorie and macro counting, and water tracking — in one place. Rated 4.4 stars across tens of thousands of reviews, it’s built around a simple idea: fasting works best when paired with the right nutrition and consistent habits. If you want fasting and a real handle on what you eat, this is the most complete option. Best for: people who want fasting plus nutrition tracking in a single, habit-focused app.

Zero — best for simple, science-backed fasting

Zero is a clean, minimalist fasting tracker with a strong library of science-based content. If you mainly want a reliable timer and to understand the “why” behind fasting, it’s a solid, no-clutter choice. Food and calorie tracking is more limited, so it’s less suited to people who also want detailed nutrition data. Best for: fasting purists who value simplicity and education.

Fastic — best for beginners and motivation

Fastic is beginner-friendly, with a large community, gamified streaks and encouraging guidance that helps new fasters stay consistent. It includes some food tracking, though it’s lighter than a dedicated calorie counter. Best for: first-time fasters who want motivation and a gentle learning curve.

BodyFast — best for guided fasting plans

BodyFast leans into personalized fasting plans and challenges, acting like a coach that adjusts your schedule over time. It’s a good fit if you prefer structure and to be told what to do next, rather than building your own plan. Best for: people who want a guided, plan-led approach.

Simple — best for holistic wellness

Simple pairs fasting with an AI assistant and broader habit and nutrition guidance, positioning itself as a wellness companion rather than a pure fasting tool. Handy if you want lifestyle coaching alongside your fasting window. Best for: users who want wellness coaching around their fasting.

DoFasting — best for fasting plus meal inspiration

DoFasting combines a fasting tracker with meal ideas and educational articles. It’s a reasonable middle ground for people who want fasting support with some recipe and nutrition inspiration. Best for: fasters who also want meal inspiration.

How to choose the right one for you

• You just want a timer and to learn the basics: Zero.
• You’re new and need motivation: Fastic.
• You want a guided plan: BodyFast.
• You want fasting and full nutrition tracking in one app: Kompanion.

For most people whose real goal is weight loss, the deciding factor is whether the app helps you manage both your fasting window and your food. That combination is where an all-in-one like Kompanion has the edge.

Frequently asked questions

What is the best intermittent fasting app?

It depends on your goal. For simple fasting, Zero is excellent; for beginners, Fastic; and for an all-in-one weight loss approach that combines fasting with calorie, macro and AI meal tracking, Kompanion is the most complete option.

Are intermittent fasting apps free?

Most intermittent fasting apps, including Kompanion, offer a free version with optional premium features. Pricing and plans change often, so check each app’s App Store or Google Play listing for the current details.

Which fasting app is best for weight loss?

Apps that combine fasting with food and calorie tracking tend to work best for weight loss, since results depend on both when and what you eat. Kompanion is designed specifically around this combination.

Do I need an app to do intermittent fasting?

No, but an app makes it much easier to stay consistent, track your fasting windows, and understand your progress — which is often the difference between a short attempt and a lasting habit.

Start fasting with Kompanion

If you want fasting, calorie and macro tracking, AI meal analysis and a GLP-1 tracker in one place, learn how intermittent fasting works and try Kompanion free on iOS and Android. Coming from a specific app? See our guide to the best Zero alternatives.