Comparison

Steadfast vs FastLyfe

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

Head to head
About

Steadfast

This app helps you track your fasting windows and hydration with a simple, ad-free interface. It offers customizable schedules, water logging, and insights into your body's fasting zones. Premium features provide advanced analytics and customization options.

Highlights
  • One-tap fasting timer
  • Water tracking with goals
  • Fasting zone insights
  • Streak tracking
  • Hydration reminders
  • Home screen widgets
  • Apple Watch app
  • HealthKit integration
Features
Read full description

The simple fasting tracker for people who just want to fast — not navigate a bloated wellness platform. No account. No ads. No data collection. Free forever, with optional Premium for power users. Whether you're running 16:8, 18:6, 20:4, 14:10, OMAD, or a custom schedule, Steadfast tracks your fasting windows with a clean, focused interface that stays out of your way. EVERYTHING YOU NEED — FREE One-Tap Fasting Timer Start, pause, and complete fasts with a single tap. Choose from 9 presets (12:12 through 48-hour fasts) or dial in any custom duration. Water Tracking Built In Log water right from the Timer screen. Set your bottle size, pick a daily goal, and tap to log. Your hydration counts toward both your wellness goal AND Apple Health. Fasting Zones See what's happening in your body as you fast — from Fed State through Early Fasting, Fat Burning, Ketosis, and Autophagy. Evidence-based zone timings keep you informed and motivated. Fasting Streaks Stay motivated with streak tracking that rewards consistency. See your current streak and longest streak at a glance. Hydration Reminders Gentle nudges during active fasts to keep you drinking. Fully configurable — and never intrusive. Home Screen Widgets Fasting Timer, Fasting Heatmap, Hydration Heatmap, Combined Dashboard, and Water Quick-Add. All widgets match your app theme automatically. Apple Watch App Separate Fasting and Water tabs. Start fasts, log water, check your progress — all from your wrist. HealthKit Integration Water intake writes to Apple Health as dietary water. Weight syncs both ways. Your data stays yours. iCloud Sync Your fasts, water log, and streaks sync across all your devices. Fasting History and Calendar Review completed fasts with monthly stats — hours fasted, daily averages, and consistency tracking. PREMIUM — FOR THE EXTRA MILE Everything you need is already free. Premium unlocks: - Advanced Analytics — Heatmaps, week-over-week trends, and time-in-zones breakdowns - Custom Themes — Beach, Midnight, Slate, and more - CSV Export — Take your data wherever you need it - Extended Widget Library — Full widget gallery unlocked - Priority Support $3.99/month or $24.99/year — a fraction of what other fasting apps charge. WHY STEADFAST? Most fasting apps have expanded into calorie counters, meal loggers, AI coaches, and social networks — then locked basic features behind $70-80/year subscriptions. Steadfast does one thing well: help you fast consistently and stay hydrated. No bloat. No bait-and-switch. No account required. Just open the app and start. Built by ManifestLab. Questions or feedback? Reach us at support@manifestlab.dev. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://manifestlab.dev/steadfast/privacy

About

FastLyfe

Features
Read full description

FastLyfe: Fasting Tracker & Timer FastLyfe is an easy-to-use fasting tracker designed to help you stay consistent and build better habits. Track your fasts, follow popular fasting schedules, and monitor your progress over time—all in one simple app. Features: Fasting timer to track your sessions Popular protocols like 16:8, 18:6, and OMAD Custom fasting schedules Progress tracking and history Calendar view to see your consistency Clean and simple design FastLyfe is built for anyone looking to stay on track with intermittent fasting without distractions or unnecessary complexity.

Screenshots

Steadfast4 screens
FastLyfe4 screens

Verdict

The call

The clearest difference is update cadence: Steadfast at weekly against FastLyfe's every 6 weeks. FastLyfe's advantage is iOS requirement (13.0 vs 26.2). On price, ads, in-app purchases and device support 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. Steadfast sells 2 in-app purchases, starting at $3.99 per month and FastLyfe sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Steadfast ships an update weekly, FastLyfe every 6 weeks. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Steadfast versus FastLyfe: the parameters behind the verdict, then further details
ParameterSteadfastFastLyfe
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyWeekly — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS26.213.0 — better
Further details — not scored
Size4 MB31 MB
Age rating4+4+
DeveloperCognitiveCore Technologies, LLCCayden Williams

In-app purchases

2 purchases

Steadfast

Subscriptions2
  • Premium Monthly$3.991 Month
  • Premium Yearly$24.991 Year
3 purchases

FastLyfe

Subscriptions2
  • Monthly3 Days trial$5.991 Month
  • Yearly$16.991 Year
One-time1
  • Lifetime Pro$29.99

Questions

Is Steadfast free?
Steadfast is free to download, with in-app purchases available.
Is FastLyfe free?
FastLyfe is free to download, with in-app purchases available.
Do Steadfast or FastLyfe have ads?
Neither Steadfast nor FastLyfe shows ads.
Which is updated more often, Steadfast or FastLyfe?
Steadfast ships an update weekly, and FastLyfe every 6 weeks. Most recently, Steadfast was updated on October 31, 2026 and FastLyfe on November 3, 2026.

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