Comparison

Ember Fasting vs Vow Fasting

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

Head to head
About

Ember Fasting

This app provides a simple and beautiful intermittent fasting timer with a widget-first design. It offers precise tracking of fasting progress, various popular protocols, and metabolic insights for Pro users. The app focuses on a clean user experience without ads or dark patterns.

Highlights
  • Widget-first design for home and lock screens
  • Fast launch time and smooth animations
  • Live metabolic process tracking (Pro)
  • Support for 5 popular fasting protocols
  • Streak tracking and milestone celebrations
  • Smart notifications for fast completion
Features
Read full description

The fasting timer that respects your time and your wallet. Ember is a beautifully crafted intermittent fasting timer that just works. No account required. No ads. No dark patterns. Just a precise, reliable timer with stunning widgets and honest pricing. WIDGET-FIRST DESIGN Check your fasting progress without opening the app. Ember offers 7 widget styles: small interactive, medium, large, Lock Screen, and StandBy. Your progress is always a glance away. Start and stop fasts right from your home screen. BEAUTIFUL & FAST Launches in under a second. Your body runs multiple metabolic processes during a fast: fat burning, ketosis, autophagy. They overlap and build on each other gradually. Ember tracks your progress with smooth animations and warm, purposeful design. Choose from 10 curated color themes or set your own custom accent color. Pick from 8 app icon styles to match your aesthetic. METABOLIC INSIGHT (PRO) Fasting isn't a series of stages you enter and leave, it's overlapping biological processes that build on each other. Pro unlocks live metabolic process tracking: see fat burning, ketosis, and autophagy ramping simultaneously with intensity indicators. Tap the info icon during any fast to see exactly what's happening in your body. EVERYTHING YOU NEED, NOTHING YOU DON'T - All 5 popular protocols: 16:8, 18:6, 20:4, OMAD, or create your own - Streak tracking with milestone celebrations - History with weekly calendar view - Basic stats to track your progress - Smart notifications for fast completion, zone transitions, and daily reminders HONEST PRICING The full fasting timer is free. No trial traps. No surprise charges. Pro unlocks metabolic insight, extra widget styles, themes, icons, and advanced notifications for $1.99/month, $14.99/year, or $29.99 lifetime. That's it. PRIVACY BY DESIGN Your data never leaves your device. No account. No analytics. No tracking. Our App Store privacy label is "Data Not Collected"...and we mean it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Vow Fasting

Read full description

Vow is a refined intermittent fasting tracker built for calm daily discipline. Start a fast, follow your progress, and understand each stage as your body moves through metabolic phases like digesting, fat burning, ketosis, and autophagy. Vow keeps fasting focused with a precise timer, clear progress, thoughtful reminders, and a minimal dark design made for daily practice. Whether you follow 16:8, 18:6, 20:4, 24-hour fasts, or custom fasting goals, Vow helps you track every session with clarity. FEATURES • Elegant fasting timer with real-time progress • Intermittent fasting plans including 16:8, 18:6, 20:4, and 24h • Metabolic phase tracking from digesting to fat burning, ketosis, and autophagy • Fasting history, streaks, and weekly insights • Custom and extended fasting durations • Goal reminders and phase update notifications • Minimal dark interface with premium themes • Home Screen widgets and Live Activity support Vow Pro Unlock extended fasting protocols, custom durations, premium themes, advanced insights, and premium widgets. Vow is not medical advice. If you have a medical condition, are pregnant, under 18, or have a history of eating disorders, consult a healthcare professional before fasting. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://vowfasting.com/privacy

Screenshots

Ember Fasting4 screens
Vow Fasting4 screens

Verdict

The call

Ember Fasting and Vow Fasting are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Ember Fasting sells 3 in-app purchases, starting at $1.99 per month and Vow Fasting sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Ember Fasting ships an update every 2 weeks, Vow Fasting fortnightly. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

ScorecardNo meaningful differences
Ember Fasting versus Vow Fasting: the parameters behind the verdict, then further details
ParameterEmber FastingVow Fasting
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better17.6
Further details — not scored
Size3 MB13 MB
Age rating4+4+
DeveloperChris SchradeFILIP LUCCA KEJSER DAMICI

In-app purchases

3 purchases

Ember Fasting

Subscriptions2
  • Ember Pro Monthly$1.991 Month
  • Ember Pro Annual$14.991 Year
One-time1
  • FastApp Pro Lifetime$29.99
2 purchases

Vow Fasting

Subscriptions2
  • Vow Pro Monthly$4.991 Month
  • Vow Pro Annual$39.991 Year

Questions

Is Ember Fasting free?
Ember Fasting is free to download, with in-app purchases available.
Is Vow Fasting free?
Vow Fasting is free to download, with in-app purchases available.
Do Ember Fasting or Vow Fasting have ads?
Neither Ember Fasting nor Vow Fasting shows ads.
Which is updated more often, Ember Fasting or Vow Fasting?
Ember Fasting ships an update every 2 weeks, and Vow Fasting fortnightly. Most recently, Ember Fasting was updated on October 9, 2026 and Vow Fasting on October 6, 2026.

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