Comparison

Flint vs Fasting Timer by TrainerDay

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

Head to head
About

Flint

This app helps you track intermittent fasting with a visual timer and personalized insights. It guides you through fasting phases, logs your daily habits, and offers tools to manage hunger. Unlock advanced analytics and recommendations with a Pro subscription.

Highlights
  • Smart fasting timer with custom protocols
  • Track metabolic milestones (ketosis, autophagy)
  • Comprehensive diary for mood, energy, and hunger
  • AI-powered personalized insights
  • Streaks and achievements for motivation
  • Hunger management coping tools
Features
Read full description

Track your intermittent fasting with a beautiful circular timer that makes every hour count. SMART FASTING TIMER Start a fast with one tap. Choose from 5 proven protocols — 16:8, 18:6, 20:4, OMAD, or create your own custom schedule. Watch your progress in real time with a fire-orange ring that fills as you get closer to your goal. METABOLIC MILESTONES Follow your body through 6 science-backed fasting phases. From ketosis to autophagy, see exactly what is happening inside as you fast — with each milestone celebrated when you hit it. COMPREHENSIVE DIARY Log mood, energy, hunger, sleep, cravings, meals, hydration, and symptoms throughout each session. Spot patterns and understand what helps you complete your fasts. INTELLIGENT INSIGHTS An AI-powered engine analyzes your data to find correlations between your habits and fasting success. Get personalized recommendations based on your unique patterns. STREAKS & ACHIEVEMENTS Build momentum with daily streaks and unlock achievements as you progress. A 7-day week bar shows your recent history at a glance. COPING TOOLS When the hunger hits, guided 4-7-8 breathing exercises, evidence-based hunger management tips, and activity suggestions help you push through. PRIVACY FIRST All data stays on your device. No accounts required. No data sold. Your fasting journey is yours alone. FLINT PRO Unlock advanced analytics and personalized insights with a Flint Pro subscription. Pro members get deeper trend analysis across multiple fasts, expanded milestone breakdowns, and tailored recommendations based on your unique patterns. • Includes a 3-day free trial for new subscribers • Auto-renews yearly at the same price unless cancelled at least 24 hours before the end of the current period • Manage or cancel anytime in your App Store account settings Download Flint for free today and take control of your fasting journey. Whether you're starting your first 16:8 fast, building a healthier routine, or just curious about intermittent fasting, Flint is the ultimate intermittent fasting companion. Start, track, and transform your way to a healthier you – one fast at a time! --- Terms of use: https://www.almastreetventures.com/terms Privacy policy: https://www.almastreetventures.com/privacy

About

Fasting Timer by TrainerDay

This app simplifies intermittent fasting with a one-tap start and customizable durations. Track your progress visually and review your fasting history. It's designed for easy habit building without complex features.

Highlights
  • One-tap fast start
  • Customizable fasting durations
  • Flexible start times
  • Visual progress tracking
  • Fasting history
  • Shareable results
Features
Read full description

Fasting Timer is a simple, no-fuss intermittent fasting tracker designed to help you build healthy fasting habits. It's the ultimate app for ADF fasters. Each day when you start your fast. It's just one click, even when you forget to start it at your normal fasting time. Features: • One-tap start - Begin your fast instantly • Customizable durations - Set your preferred fasting window (12, 14, 16, 18, 20+ hours) • Flexible start times - Start now or schedule for later • Visual progress - See your fasting progress at a glance • History tracking - Review your completed fasts • Share your achievements - Export and share your fasting results Whether you're doing 16:8, 18:6, or any other intermittent fasting schedule, this app makes it easy to track your fasting windows without complicated setup or unnecessary features. Free and simple. Start fasting today.

Screenshots

Flint4 screens
Fasting Timer by TrainerDay4 screens

Verdict

The call

The clearest difference is in-app purchases: Fasting Timer by TrainerDay at none against Flint's 2. Fasting Timer by TrainerDay also leads on ads (none vs shown) and iOS requirement (15.1 vs 18.0). On price, rating, review sentiment and ratings volume 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. Flint sells 2 in-app purchases, starting at $29.99 per year. Fasting Timer by TrainerDay asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Flint against 5.0 for Fasting Timer by TrainerDay. Both are backed by a comparable volume of ratings — 14 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Scorecard4 real differences · 6 level
Flint versus Fasting Timer by TrainerDay: the parameters behind the verdict, then further details
ParameterFlintFasting Timer by TrainerDay
PriceFreeFree
Rating4.9 (14 ratings)5.0 (12 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings14 — better12
Update frequencyEvery 6 days—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size33 MB30 MB
Age rating17+17+
DeveloperAlma Street VenturesTrainerDay Inc

Customer experience

Flint

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Fasting Timer by TrainerDay

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Flint

Subscriptions2
  • Flint Pro3 Days trial$29.991 Year
  • Flint Plus3 Days trial$39.991 Year
None

Fasting Timer by TrainerDay

No in-app purchases

Questions

Is Flint free?
Flint is free to download, with in-app purchases available.
Is Fasting Timer by TrainerDay free?
Fasting Timer by TrainerDay is free to download, with no in-app purchases.
Which has better reviews, Flint or Fasting Timer by TrainerDay?
Fasting Timer by TrainerDay is rated higher. Flint averages 4.9 out of 5 from 14 ratings, while Fasting Timer by TrainerDay averages 5.0 from 12 ratings.
Do Flint or Fasting Timer by TrainerDay have ads?
Flint shows ads; Fasting Timer by TrainerDay does not.

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