Best Intermittent Fasting Apps for Android (2026)
Intermittent fasting isn't a diet — it changes when you eat, not what. The hard part isn't willpower about food; it's tracking a clock. That's exactly what these apps do. Two honest warnings first: DoFasting has a ~2.7-star rating on Google Play (per AppBrain/androidrank, Oct 2026 — it fluctuates; despite ranking better on the App Store — a massive red flag for Android users), and three of the most-shared "best fasting apps" lists online are written by app-development companies selling their services, not neutral reviewers. This list checks Play ratings directly.
Quick Picks
- Best overall free: Zero (deepest free feature set)
- Best structured plans: BodyFast (10+ plans, free core)
- Best for nutrition + fasting: Fastic (400+ recipes)
- Best simple tracker: Fastient ($4.99/yr cheapest upgrade)
- Best AI coaching: Simple (Avo assistant)
- Best community: LIFE Fasting Tracker
Fasting Schedules Explained
| Schedule | How it works | Best for | Results timeline |
|---|---|---|---|
| 16:8 | Fast 16h, eat in 8h window | Most beginners | 2–4 weeks |
| 14:10 | Fast 14h, eat in 10h | Absolute beginners | 2–4 weeks |
| 18:6 | Fast 18h, eat in 6h | Experienced fasters | 2–4 weeks |
| 5:2 | Eat normally 5 days, 500–600 cal on 2 | Calorie control | 4–6 weeks |
| OMAD | One meal a day (~23h fast) | Advanced only | 1–2 weeks |
| 20:4 (Warrior) | Fast 20h, eat in 4h | Experienced fasters | 2–4 weeks |
The Best Fasting Apps
1. Zero — Best Free Overall
Rating: 3.76 (61,204 reviews) · Free / Zero Plus $69.99-yr · Zero on Google Play
The world's most popular fasting app — and the honest caveat: its real Play rating is 3.76, not the 4.0+ quoted in review lists. Free tier includes the timer with multiple presets, fasting zones (see what metabolic stage you're in), mood/energy tracking, a fasting journal, challenges, and an education library, plus Google Fit sync. Zero Plus adds coaching. The circadian-rhythm fast auto-calculates sunset for your location. Deepest free feature set on Android — the rating just means the app isn't perfect.
2. BodyFast — Best Structured Plans
Rating: ~4.7 · Free core / optional coaching add-ons
Ten different fasting plans (16:8, 5:2, and more), a weekly Coach that recalculates your optimal schedule, fasting-stage explainers, weight and water tracking — and the core app is genuinely free, with coaching as optional add-ons rather than a subscription wall. "Joker Days" let you take a break without losing your streak. Ranked #1 fasting app in 48 countries. For people who want structure rather than a bare timer, this is the pick.
3. Fastic — Best for Nutrition + Fasting
Rating: ~4.4 · Free / Prime $11.99-mo
Fasting is only half the picture — Fastic pairs your timer with 400+ whole-food recipes, a step counter, water tracker, body-status tracking through fasting stages, and Google Fit sync. The free tier is solid; Prime opens the full recipe library and daily challenges. Best for people whose diet matters as much as their timing.
4. Fastient — Best Simple Journal
Free / Premium $4.99-yr (cheapest upgrade anywhere)
Journal-first tracking: log fasts alongside symptoms, mood, and weight, edit past entries, and review progress in clean charts. Cloud-based — access from any device or web browser. No meal plans, no coaching, no bloat. And at $4.99/year, the premium upgrade costs less than one month of most competitors.
5. Simple — Best AI Coaching
Rating: ~4.3 · Free core / Premium ~$14.99
Avo, the AI assistant, gives daily guidance and answers nutrition questions; the app tracks food, water, and exercise alongside your fasting window. Minimalist, beginner-friendly, and the AI angle genuinely differentiates it. Premium is pricier than basic trackers — pay only if you'll use the coaching.
6. LIFE Fasting Tracker — Best Community
Free / $2.99-mo
"Circles" let you fast alongside friends and family in real time; the app also tracks advanced markers like glucose and ketones — useful if you combine fasting with keto. Research-backed articles on fasting science included. The interface looks dated, but the social accountability is the real feature here.
7. Window — Best Eating-Window Tracker
Rating: ~3.5 · Free / Plus $9.99-mo
One job done well: schedule your eating window, get notified when it opens and closes. Includes a mood/meal journal and supports OMAD and alternate-day fasting. The modest 3.5 rating suggests execution issues — worth trying free before trusting it with your routine.
Free-vs-Paid: What "Free" Actually Means
| App | Free gets you | Paid costs | Verdict |
|---|---|---|---|
| Zero | Timer, zones, journal, mood tracking | $69.99/yr | Deepest free tier |
| BodyFast | All 10 plans + tracking | Optional coaching | Genuinely free core |
| Fastic | Timer, steps, recipes (partial) | $11.99/mo | Freemium |
| Fastient | Full journal + charts | $4.99/yr | Cheapest upgrade |
| Simple | Core tracking | ~$14.99 | Freemium |
| LIFE Tracker | Full tracking + community | $2.99/mo | Freemium |
| Window | Scheduling + alerts | $9.99/mo | Freemium |
| DoFasting | Limited | ~$33/mo | Avoid on Android (2.7★) |
Apps to Be Careful With
- DoFasting — 4.6 on the App Store but ~2.7 on Google Play. That gap screams billing and support problems on Android. Avoid until it recovers.
- Sunrise, Rhythm, Easy Fast, Vora — solid apps, but iOS-only. They don't belong on an Android list despite appearing in several.
Who Should NOT Do Intermittent Fasting
This matters more than any app pick. Intermittent fasting is not recommended for: pregnant or breastfeeding women, children and teenagers, people with a history of disordered eating, and people with certain medical conditions (including diabetes on medication — fasting changes insulin needs). Talk to a doctor before starting. Apps are not medical advice; their tips are rarely expert-verified.
Tips for Your First Two Weeks
- Start at 12:12 or 14:10. Jumping straight to 16:8 is the #1 reason people quit on day three.
- Stay hydrated. Water, black coffee, and plain tea don't break a fast; hunger in week one is often thirst.
- Eat real food in your window. Fasting doesn't cancel out junk — what you eat matters more, not less.
- Expect week one to be rough. Hunger, headaches, and fatigue are common and usually pass.
- Track mood, not just hours. Fastient or Zero's mood graphs show patterns (bad sleep → harder fasts) that a bare timer hides.
- Consistency beats the perfect app. Results depend more on sticking to a schedule than on any feature set.
What Can You Drink While Fasting?
The rule: anything with (near-)zero calories. Water (sparkling is fine), black coffee, plain tea, and electrolyte water without sweeteners all keep the fast intact. What breaks it: milk or sugar in coffee, fruit juice, diet sodas (the sweeteners trigger insulin responses in some people and spike cravings in most), and alcohol. When in doubt during week one: drink water.
Your First Fast: A Beginner Walkthrough
- Pick 14:10. Stop eating at 8 PM, eat breakfast at 10 AM. That's it — you fasted while mostly asleep.
- Set the timer. Open Zero or BodyFast, pick 14:10, start the fast at 8 PM.
- Morning: black coffee or water. Eat at 10 AM as normal — no need to "make up" for skipped food.
- Repeat for 7 days. Log mood in the app each evening.
- Week 2: if week one felt easy, move to 16:8 (stop at 8 PM, eat at noon).
- Stop if: you feel dizzy, nauseous, or unwell — eat, and talk to a doctor before retrying.
Pairing Strategy
Fasting apps track when you eat. For what you eat, pair with a nutrition tracker: our home workout guide covers MyFitnessPal, which integrates with most fasting apps. And for general wellness tools, see our Android app guides.
Common Fasting Mistakes
- Going too hard, too fast. OMAD on day one leads to quitting on day two. Earn the longer fasts.
- Undereating in the window. Fasting isn't starvation — eat proper meals when the window opens, or your energy collapses.
- Ignoring sleep. Poor sleep makes fasting feel twice as hard; the apps that track sleep (Zero, Simple) exist for this reason.
- Paying before trying free. Every app here has a usable free tier — confirm fasting fits your life before spending a rupee.
Privacy Notes
Fasting apps collect health data — weight, eating patterns, sometimes glucose. Check each app's Data Safety section before installing; several request location or contacts they don't need. BodyFast and Fastient are the quieter options; ad-supported free tiers are the noisiest. Your eating data is sensitive — prefer apps with data-deletion options.
Frequently Asked Questions
What is the best free intermittent fasting app for Android?
Zero has the deepest free feature set (timer, journal, mood tracking, fasting zones). BodyFast's core app — all 10 fasting plans — is fully free with optional coaching add-ons.
What is the easiest fasting schedule for beginners?
12:12 or 14:10 to start, then 16:8 (fast 16 hours, eat within 8). Most people see results within 2-4 weeks of consistent 16:8.
Who should NOT do intermittent fasting?
Pregnant or breastfeeding women, children, people with a history of disordered eating, and anyone with certain medical conditions. Consult a doctor first.
Are fasting apps really free?
Most are freemium — the timer is free, coaching and advanced analytics are paid. BodyFast's core app and Vora are genuinely free; Easy Fast has no paid tier at all.
Can I lose weight with intermittent fasting alone?
Yes, but results depend on diet quality and consistency. Pairing a fasting app with calorie tracking (like MyFitnessPal) is the most proven approach.