Comparison

Fast vs Fasting Timer

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

Head to head

Fast

Track and manage fasting time

Intermittent fasting timer

Free

💪 Health & Fitness

No ratingsView app →

About

Fast

Features

Read full description

Fasting Timer is a simple app for tracking fasting time. Use the countdown timer to start fasting and monitor progress. The app also lets you log water intake for proper hydration.\n\nWith history and stats, you can review past fasting sessions and analyze progress. Ideal for those building a fasting habit or focusing on health management.\n\nDesigned with simplicity and intuitive controls, anyone can use it easily. Start fasting today with this app for seamless tracking.

About

Fasting Timer

Features

Read full description

Fasting Timer - SLOX is a lightweight intermittent-fasting countdown timer designed to keep tracking simple. Features: • Preset protocols: 16:8, 18:6, 20:4 — plus a fully custom protocol • Live countdown showing time elapsed and time remaining • Past-fast history with completion status • Quick-start and one-tap stop • Sound & haptic toggles • 7 languages supported (English / 한국어 / 日本語 / 简体中文 / 繁體中文 / Español / Português) NOT a medical device. The timer simply counts down the duration you choose. It does not measure metabolic state, glucose, or any biomarker, and it does not diagnose any condition. Intermittent fasting may not be safe for everyone (pregnant or breastfeeding individuals, people with diabetes, eating disorders, or other medical conditions). Consult a healthcare professional before starting any fasting routine.

Screenshots

Fast3 screens

Fasting Timer3 screens

Verdict

The call

The clearest difference is in-app purchases: Fasting Timer at none against Fast's 2. Fasting Timer also leads on update cadence (every 2 days vs every 9 months) and iOS requirement (13.0 vs 15.0). On price, ads 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. Fast sells 2 in-app purchases, starting at $4.99 per month. Fasting Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Fast ships an update every 9 months, Fasting Timer every 2 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 3 level

Fast versus Fasting Timer: the parameters behind the verdict, then further details
Parameter	Fast	Fasting Timer
Price	Free	Free
Update frequency	Every 9 months	Every 2 days — better
Ads	Yes	Yes
In-app purchases	Yes	No — better
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15.0	13.0 — better
Further details — not scored
Size	76 MB	23 MB
Age rating	4+	4+
Developer	kota tada	SEOKWON YANG

In-app purchases

2 purchases

Fast

Subscriptions2

Ad-free for 1 month7 Days trial$4.991 Month
Ad-free for 1 year14 Days trial$49.991 Year

None

Fasting Timer

No in-app purchases

Questions

Is Fast free?

Fast is free to download, with in-app purchases available.

Is Fasting Timer free?

Fasting Timer is free to download, with no in-app purchases.

Do Fast or Fasting Timer have ads?

Both Fast and Fasting Timer show ads.

Which is updated more often, Fast or Fasting Timer?

Fast ships an update every 9 months, and Fasting Timer every 2 days. Most recently, Fast was updated on October 13, 2026 and Fasting Timer on October 7, 2026.