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Best Fasting Tracker Apps for iPhone (2026): Apple Watch

EasyFasting EditorialJuly 31, 202618 min read

Updated September 7, 2026

Table of Contents

The fasting app you actually keep is the one you never have to open. On day three you are curious and you tap the timer six times. By week three it is either a glance on your Lock Screen and a number on your wrist, or a folder on page four next to the meditation app you also abandoned. Retention in fasting apps is not a motivation problem. It is an interface-distance problem.

That is the lens here. Instead of ranking features by how good they look in a screenshot, we judge each app by how deeply it lives inside iPhone: widgets you can act on, an Apple Watch app that works on its own, offline reliability, no forced account, and notifications that respect your attention. Most fasting apps are cross-platform products with a thin iOS shell around a web funnel. A few are built for the phone you carry.

What Makes a Fasting App Genuinely iPhone-Native

1. Home and Lock Screen widgets

A widget is the difference between checking your fast and opening an app to check your fast. One takes half a second, the other takes a decision.

The bar is higher than “displays a number.” An interactive widget lets you start and stop a fast without launching the app, which strips the friction from the two moments that matter: closing your eating window and opening it.

2. A real Apple Watch app

Plenty of apps have a watch presence that is really a notification mirror. A real watch app runs its own screens and works when your phone is in another room.

The useful fasting actions are short: start, stop, switch protocol, see your phase. If the watch handles those four without your phone, it is real. Otherwise it is a widget with a strap.

3. Works offline, no account

Fasting is a timer and a log. Neither needs a server. An app that demands an email address before showing a start button is optimizing for its funnel, not your fast.

Airplane mode, a basement gym, a restaurant with bad signal: these are exactly the moments you want to start or end a fast. An app that stalls on a spinner is not a tracker, it is a client.

4. Data that stays yours

Fasting logs are health data, so where they live is a real question. On-device storage with private iCloud sync means your history moves between your devices without passing through anyone’s analytics stack.

5. Quiet notifications

Fasting apps are notorious for nagging. Good design means you choose which alerts exist, phase milestones fire when something actually changed, and nothing arrives because a growth team wanted a re-engagement bump.

Notification quality is invisible for two days and decisive after two weeks, and it is the most common reason people delete a fasting app.

iPhone Fasting Trackers at a Glance

Feature	EasyFasting	Zero	Fastic	BodyFast	Simple
Home / Lock Screen widgets	Yes, both, interactive	Not listed	Not listed	Not listed	Home Screen widget listed
Apple Watch app	Yes, full standalone app	Yes	No	No	Yes
Watch complications	Circular and corner, plus Smart Stack card	Not listed	None — no watch app	None — no watch app	Not listed
Works offline	Yes	Requires internet	Not listed	Not listed	Not listed
Account required	No	Not listed	Not listed	Not listed	Not listed
Free protocols	All five (14:10, 16:8, 18:6, 20:4, OMAD)	Basic timer	Timer included	10+ customizable plans	Not listed
Free history window	Last 7 days	Not listed	Not listed	Not listed	Not listed
One-time purchase	Lifetime, 79.99 dollars	No lifetime option	Not listed	Not listed	Not listed

“Not listed” means we could not verify that cell from the App Store information available in July 2026, so we assert nothing. The Apple Watch app row is different: it was re-checked on 7 September 2026 against each app’s App Store record, which states the device families an app supports. Those four cells are verified facts, not inferences, and one of them corrects an earlier version of this page in a rival’s favour — see below.

EasyFasting — Best iPhone-Native Fasting Tracker (2026)

EasyFasting was built as an iPhone and Apple Watch app first, and the free tier reflects that. All five protocols are free, which is unusual: 14:10, 16:8, 18:6, 20:4 and OMAD are available on install, with none behind a paywall. If you are still choosing a window, the comparison of 16:8 versus 18:6 fasting covers what changes between them, and the OMAD guide covers the tightest option.

The widgets are why the app disappears into your phone in a good way. Home Screen and Lock Screen widgets are interactive, so you start and stop a fast with one tap from wherever you are. The Apple Watch app is standalone, not a mirror: start or stop a fast, switch protocol and read your live phase with the phone left at home, plus phase-colored circular and corner complications on your watch face. Every watch surface is free, with no upsell attached to the wrist.

Logging is forgiving, which matters more than most feature lists admit. You can edit the start time of a running fast, edit both times on any finished fast, and delete any log. If a day goes sideways, Skip bridges a fast or an empty rest day so your streak holds instead of breaking, and it is reversible. Skipped fasts still count toward totals and averages.

Free in EasyFasting:

All five protocols: 14:10, 16:8, 18:6, 20:4, OMAD
One-tap circular timer, plus interactive Home and Lock Screen widgets
Full Apple Watch app with circular and corner complications and a Smart Stack card
Edit the start time of a running fast, and both times on finished fasts
Skip a fast or a rest day to bridge a streak, reversible
Every notification type, including phase-milestone alerts, fully customizable
Learn tab with structured fasting courses
All awards earnable and shareable, streak milestones at 3, 7, 14, 21, 30, 60 and 90 days
Last 7 days of history and a This Week stats snapshot
No account, works offline, private iCloud sync

Download EasyFasting free on the App Store

What Premium gates, plainly: history beyond the last 7 days, charts, trends, averages and insights, detailed phase education cards, the live awards progress view, extra accent colors and 30-day weight trends. Premium is 7.99 dollars monthly, 39.99 dollars yearly or 79.99 dollars once for lifetime, with a 7-day free trial on the monthly and yearly plans. Billing is StoreKit only, so you cancel in two taps in iOS Settings and refunds go through Apple. The five protocols are the whole list, and that is a stated limit.

The Alternatives

Zero: Fasting & Food Tracker

Zero is the category’s best-known name, rated 4.8 stars from roughly 445,000 ratings. The free tier gives you a basic timer, streaks, insights and a large library of free educational content. Zero Plus is a monthly-or-annual subscription with no one-time purchase option.

Plus is where the food side lives: photo meal logging with macro analysis, a protein score, advanced hydration, habit tracking across movement, sleep and mood, challenges and trend analytics. New users get three free meal logs. Zero requires an internet connection.

Best for: people who want fasting and detailed food logging in one product. Limitation: requires internet, no lifetime purchase, and the meal-logging depth that defines it sits behind Plus.

Fastic Weight Loss & Fasting

Fastic is rated 4.8 stars from roughly 246,000 ratings and goes wider than a pure timer. The free tier includes the timer, a food and calorie tracker, body-status phases, a step counter, a water tracker, Health app sync and an AI chat feature.

Fastic Plus is sold across an unusually large number of subscription lengths — monthly, quarterly and annual, with several price points inside each. Plus unlocks over 4,500 recipes, the Fastic Academy, challenges, a fasting buddy and coaching. Because the tiers overlap, read the price Apple shows you at checkout rather than any figure quoted on a website, including this one.

Best for: people who want recipes and an all-in-one wellness tracker rather than a focused fasting clock. Limitation: the pricing is complicated, and the product spreads wide rather than going deep on the timer.

BodyFast: Intermittent Fasting

BodyFast is rated 4.7 stars from around 145,000 ratings and leads with plan variety. The free tier includes more than ten customizable fasting plans, a timer with reminders, weight and body measurements, fasting stage information, water tracking and education. That free plan library is the widest here.

BodyFast Coach is the paid layer, sold as one-, three-, six- and twelve-month subscriptions, each spanning a range of prices rather than one fixed figure. Coach adds personalized weekly plans, daily coaching, more than 100 recipes, nutrition facts, challenges, achievements and priority support. The app sets your week rather than you setting it.

Best for: people who want a coach to assign the schedule instead of picking a protocol themselves. Limitation: the price bands vary widely, so two people can pay different amounts for the same Coach tier. No Apple Watch app.

Simple: AI Weight Loss Coach

Simple is a weight-loss coach with fasting inside it, rated 4.7 stars from roughly 391,000 ratings. Its free tier is unusually broad: the AI coach Avo, photo nutrition feedback, beginner workouts, food, water, activity and weight logging, a Success Score, a Home Screen widget and Apple Health. It is the one alternative here with a widget explicitly listed.

Paid tiers are Simple Pro, Simple Premium and a Workbooks Bundle, all subscriptions, unlocking personalized plans and on-demand coaching. The trade is scope: fasting is one module in a broader product, so if the timer is what you came for, you carry a lot of app around it.

Best for: people whose main goal is weight-loss coaching, with fasting as one tool among several. Limitation: fasting is not the center of the product, so the timer gets less room than in a dedicated app.

Widgets: The Feature That Decides Whether You Keep Using It

Here is the pattern behind most abandoned fasting apps. Week one you open it because it is new. Week two because you remember. Week three you forget once, the streak breaks, and the app becomes a reminder of failure rather than a tool.

Widgets break that chain by removing the open. When your current fast sits on the Lock Screen, you never check the app, you just see the number while checking the time. Nothing has to be remembered, so nothing gets forgotten.

Interactive widgets go further. Starting and stopping from the Home Screen means the two decisions that structure your day cost one tap each. That matters most at the end of a fast, when extra friction quietly turns into an unlogged day.

The setup is small: one widget on the Home Screen page you actually use, one on the Lock Screen, and a complication on your watch face. We wrote a full walkthrough of fasting widgets on iPhone covering sizes and placement. If you cannot decide between two apps, install both and see which one you stop opening. That is the one that won.

Apple Watch: What Actually Works From Your Wrist

A watch app earns its place by handling short moments well. Nobody reads charts on a watch. People glance at an hour count, end a fast at a restaurant table, or start one after dinner without unlocking a phone.

That is four actions: start, stop, switch protocol, see the phase. EasyFasting’s watch app handles all four on its own, including with your phone at home, and the phase color makes the glance instant.

Complications are the underrated part. A circular or corner complication turns your watch face into the tracker, so the app barely needs to open. EasyFasting ships circular and corner families plus a Smart Stack card. It does not ship rectangular, bezel or inline complications, so if your favorite face relies on one of those, you will place the timer elsewhere.

Everything on the watch is free in EasyFasting, with no upsell on any watch surface. The common pattern in this category is a free phone timer with the wrist experience sold separately.

Which of these apps actually have an Apple Watch app?

Checked on 7 September 2026 against each app’s App Store record, which lists the device families the app installs on. An app with no Apple Watch in that list cannot have a watch app, whatever the marketing pages say.

App	Apple Watch app
EasyFasting	Yes
Zero	Yes
Fastic	No
BodyFast	No
Simple	Yes

Does Fastic work on Apple Watch? No. Fastic (version 1.270.2) does not ship an Apple Watch app. You can see fasting notifications on your wrist, because iPhone mirrors notifications to a paired watch by default, and that is genuinely what some people mean when they ask. But there is no Fastic app on the watch, no complication for your watch face, and no way to start or end a fast from your wrist. If you leave your phone at home, Fastic is not with you.

BodyFast is the same: no watch app, no complications.

Zero does have one, and an earlier version of this page said we could not verify that. We could have; we did not check properly. Correcting it costs us the cleanest line in this comparison and it is still the correct thing to publish. If a watch app is your requirement, Zero and Simple are real options alongside EasyFasting, and this page should have said so sooner.

Where EasyFasting still differs is what the wrist costs you. Every watch surface is free here, with no upsell attached to any of them, and the app runs standalone with the phone left behind. The common pattern in this category is a free phone timer with the wrist experience sold separately — so “has a watch app” and “has a watch app you can use without paying” are two different questions, and the second one is the one that decides whether you keep it.

Complication families are still unverified for every app but EasyFasting, so we make no claim there. If the wrist is the deciding factor for you, the Apple Watch fasting guide covers complication families, independent watch apps and how to verify any app’s watch support yourself in under a minute.

Which iPhone Fasting App Should You Pick?

You want a fasting timer, not a wellness platform

Pick the app with the best timer, widgets and watch support, and ignore feature count. EasyFasting fits: five protocols, interactive widgets, a full watch app, no account, offline. If you are still deciding whether fasting suits you, start with what intermittent fasting actually is and the beginner’s guide.

You want food logging and coaching in the same app

Zero and Fastic are the stronger picks. Zero’s photo meal logging is the deepest food layer here, and Fastic bundles calories, steps, water and recipes. Simple leans furthest toward coaching. In all three, expect to pay for the part you came for.

You want the schedule decided for you

BodyFast’s Coach tier assigns personalized weekly plans, which suits people who stall on choosing a protocol. If you would rather make the choice yourself, our guide to building an intermittent fasting schedule covers fitting a window around work, training and sleep.

Getting Started

Pick one protocol and run it for a week before changing anything. 16:8 is the standard starting point, and most people reach it by moving breakfast later rather than skipping dinner. Set up the widget on day one, not day ten.

Two things worth reading in your first week: what breaks a fast, because the coffee question comes up immediately, and what the first week actually feels like. The full free and Premium split lives on the features page.

Download EasyFasting free on the App Store

Frequently Asked Questions

What is the best fasting tracker app for iPhone in 2026?

Judged on how native it feels on iPhone, EasyFasting is the strongest pick. All five protocols are free, the widgets are interactive so you can start and stop a fast without opening the app, and the full Apple Watch app is free with no upsell. It works offline and needs no account. If you want photo meal logging or AI coaching, Zero, Fastic, BodyFast and Simple offer more.

Which iPhone fasting apps have Home Screen and Lock Screen widgets?

EasyFasting ships both, and they are interactive, so one tap starts or stops a fast from the Home Screen or Lock Screen. Simple lists a Home Screen widget in its App Store description. For Zero, Fastic and BodyFast we could not verify widget support from the information available in July 2026, so we do not claim either way. Check the listing yourself before you commit.

Does Fastic have an Apple Watch app?

No. Checked on 7 September 2026, Fastic does not ship an Apple Watch app — its App Store record does not list Apple Watch among the devices it installs on. Fasting notifications can still appear on your wrist, because iPhone mirrors notifications to a paired watch, but there is no Fastic app on the watch, no complication, and no way to start or end a fast from your wrist. BodyFast has no watch app either. Zero, Simple and EasyFasting do.

Which iPhone fasting apps have a real Apple Watch app?

Verified on 7 September 2026 from each app’s App Store record: EasyFasting, Zero and Simple ship an Apple Watch app. Fastic and BodyFast do not. EasyFasting’s watch app is standalone — it starts and stops fasts, switches protocol and shows the live phase with the phone left at home — and every watch surface is free with no upsell, which is the part that differs most across this list.

Do I need an Apple Watch to track intermittent fasting?

No. A phone timer is enough, and most people track fine from the Home Screen alone. A watch helps in specific moments, such as checking the hour count in a meeting or ending a fast at the table. EasyFasting includes a full Apple Watch app that starts and stops fasts, switches protocols and shows the live phase with the phone left at home, plus circular and corner complications.

Is there a free fasting tracker app for iPhone with no account?

EasyFasting requires no account and works offline. You install it, pick one of the five protocols and start. Data stays on device with optional private iCloud sync. Free coverage includes all five protocols, widgets, the full Apple Watch app, every notification type, streaks and milestones, awards, the Learn tab and the last seven days of history. Premium unlocks longer history, charts and trends.

How much does EasyFasting cost compared to other fasting apps?

The useful comparison is the pricing model, not the number, because Apple sets a different price in every storefront and any app can change tiers without telling us. EasyFasting is the only one here with a one-time lifetime purchase alongside its monthly and annual subscriptions, both of which carry a 7-day free trial. Zero is subscription-only and states no lifetime option. Fastic, BodyFast and Simple sell subscriptions across several overlapping lengths at prices that vary between users; we have not verified whether any of them offers a one-time purchase, so we do not claim either way. Check what Apple shows you at checkout.

Does EasyFasting support custom fasting windows or long fasts?

No. EasyFasting ships exactly five protocols: 14:10, 16:8, 18:6, 20:4 and OMAD. There are no custom windows and no multi-day protocols. That is a deliberate limit rather than a roadmap gap in disguise, and it is worth knowing before you install. If you want a schedule you define hour by hour, another tracker fits better. For the daily protocols most people run, five covers the range.