Comparison

Intermittent Fasting Tracker vs Niio

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

Head to head
About

Intermittent Fasting Tracker

This app offers a straightforward and private way to track intermittent fasting. It supports iPhone and Apple Watch, providing essential features like widgets, notifications, and progress charts without any advertisements. Ideal for both beginners and experienced fasters, it focuses on a simple user interface to support health and wellness goals.

Highlights
  • Interactive Widgets
  • Notifications
  • Streaks & Badges
  • Charts & Trends
  • Fasting Zones
  • iCloud Sync
  • Dark Mode
Features
Read full description

Track fasting periods with Fasty. No account or sign-up required. Start and stop a fasting timer, set a goal, and review your recorded fasts. Edit entries to correct start and end times and keep a record of your fasting history. Features - Fasting timer: see elapsed time and the time remaining until your chosen goal. - Widgets and Live Activities: check your timer from your Home Screen, Lock Screen, and Dynamic Island on supported devices. - Apple Watch: start and finish fasts, change your goal, and check your current fasting status from your wrist, included for free. - Fasting history: add, edit, and review your recorded fasts. - Charts and trends: explore fasting durations, totals, and averages over time. - Notifications: choose reminders and alerts for your timer and eating window. - Siri and Shortcuts: start and finish fasts and check your current fasting status. - CSV import and export: import existing records or export your data for use outside the app. - Dark Mode: use a light or dark appearance to suit your preference. - Streaks and badges: view summaries and milestones based on your recorded fasts. Additional paid features are available through one-time purchases and auto-renewable subscriptions. Available options, included features, and prices are shown in the app before purchase. Subscriptions renew automatically unless canceled. You can manage or cancel them in your App Store account settings. Health information Fasty is a utility for people who want to track their fasting. It does not recommend fasting or a specific fasting plan and does not provide medical advice. Consult a doctor, registered dietitian, or another qualified healthcare professional about whether and how to fast. Privacy Policy: https://fastyfasting.com/#privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Niio

Features
Read full description

Niio is a simple, private way to track your period, understand your body, and know what to expect — without the clutter. Log your period, symptoms, mood, energy, and sleep in seconds. Niio turns that into clear predictions and gentle reminders, so you're never caught off guard. WHAT NIIO TRACKS • Period dates and flow intensity • Fertile window and estimated ovulation • Symptoms — cramps, headaches, bloating, fatigue, and more • Mood and energy levels • Sleep quality • Private notes for anything else you want to remember PREDICTIONS YOU CAN TRUST Niio's predictions get smarter the more you log — starting from your own cycle history, not generic averages. Confidence labels are always shown, so you know whether an estimate is based on real data or still a first guess. GENTLE REMINDERS Get quiet, private notifications before your period and fertile window begin — never anything that gives away what they're for. INSIGHTS THAT MAKE SENSE OF YOUR DATA See your most common symptoms, mood patterns, and cycle trends over time, translated into plain-language tips. PRIVATE BY DESIGN Niio doesn't require an account. Your cycle data stays on your device. You can also lock the app with Face ID or your fingerprint for an extra layer of privacy. NIIO PREMIUM Upgrade for: • No ads, anywhere in the app • Your full cycle history (free shows the last 2 months) • PMS forecasts based on your own premenstrual weeks • Symptom, mood, and sleep correlations • Cycle regularity and 3/6/12-month trends • Health reports for any month, exportable as PDF • Full data export as CSV Niio is here to help you understand your cycle — and yourself — a little better, one day at a time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Intermittent Fasting Tracker4 screens
Niio4 screens

Verdict

The call

The clearest difference is ads: Intermittent Fasting Tracker at none against Niio's shown. Niio's advantage is iOS requirement (15.0 vs 17.0). On price, 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. Intermittent Fasting Tracker sells 17 in-app purchases, starting at $0.99 per month and Niio sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard2 real differences · 8 level
Intermittent Fasting Tracker versus Niio: the parameters behind the verdict, then further details
ParameterIntermittent Fasting TrackerNiio
PriceFreeFree
Rating4.9 (52K ratings) — better—
Positive reviews96.9% of reviews—
Number of ratings52K — better—
Update frequencyEvery 10 days—
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size111 MB31 MB
Age rating12+4+
DeveloperKai OelfkeQUANG NINH BUI

Bugs and requests

Intermittent Fasting Tracker

Reported bugs

2 issues
  • Overlapping fasting/eating windows reported
  • Inconsistencies in fasting time calculations

Requested features

4 requests
  • Ability to schedule and set reminders for fasts
  • Option to manually log ketosis levels
  • Export or share fasting data
  • More detailed fasting stage information

Niio

Not enough reviews yet to summarise bugs or requests.

In-app purchases

17 purchases

Intermittent Fasting Tracker

Subscriptions9
  • Fasty Monthly Donation$0.991 Month
  • Fasty Basic Monthly$0.991 Month
  • Fasty Monthly Donation$1.991 Month
Show 6 more
  • Fasty Basic Monthly$1.991 Month
  • Fasty Monthly Donation$2.991 Month
  • Fasty Basic Yearly$4.991 Year
  • Fasty Basic Yearly$6.691 Year
  • Fasty Pro Monthly2 variants$6.991 Month
  • Fasty Pro Yearly2 variants$19.991 Year
One-time8
  • One Time Donation$4.99
  • Fasty Basic One Time$9.99
  • One Time Donation$9.99
Show 5 more
  • One Time Donation$14.99
  • One Time Donation$24.99
  • One Time Donation$34.99
  • Fasty Pro One Time2 variants$49.99
  • One Time Donation$49.99
2 purchases

Niio

Subscriptions2
  • Niio: Period Tracker$2.991 Month
  • Niio: Period Tracker$12.991 Year

Questions

Is Intermittent Fasting Tracker free?
Intermittent Fasting Tracker is free to download, with in-app purchases available.
Is Niio free?
Niio is free to download, with in-app purchases available.
Do Intermittent Fasting Tracker or Niio have ads?
Niio shows ads; Intermittent Fasting Tracker does not.

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