Comparison

Simple Fasting Tracker vs MirrorUp21

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

Head to head
About

Simple Fasting Tracker

Easily track your intermittent fasting journey with personalized schedules, goal setting, and progress monitoring. Syncs with Apple Watch and HealthKit for seamless data management. Offers detailed analytics to optimize your fasting.

Highlights
  • Quick fast logging
  • Customizable fasting schedules
  • Real-time progress tracking
  • Track weight and body fat
  • Personalized fasting analytics
  • Apple Watch and HealthKit sync
  • Widgets for quick access
Features
Read full description

Fasting tracker – Easy, simple and intuitive. You can start and track your fasts within seconds. You can set personalised fasting and weight goals, create custom fasting schedules, and receive reminders to stay on track. Plus, you can track and optimize your fasting journey while monitoring weight, body fat percentage, waist circumference, and other key metrics. If you have an Apple Watch, you can start and end your fasts, view current fast progress and also view historic data right from your Watch. The data is automatically synced with iPhone and Health kit. Features: - Quick fast log - Customizable fasting schedules - Real-time progress tracking - Track weight, body fat percentage, waist circumference, BMI and more. - Set and monitor weight goals - Personalized fasting analytics - Reminders to keep you focused Apple Watch Compatible: Start, stop and track your fasts directly from the watch which auto-syncs with the phone and HealthKit. (Yes, we repeated the Apple Watch text - we worked very hard on the feature!) Widgets: Quick access to fasting status, progress, and monthly metrics. Compare: Compare fasting's effect on weight, body fat, waist circumference, and BMI. (AI powered analytics with a human touch) Apple HealthKit Compatible: Seamlessly sync your health data. Note: This app is for general tracking and not a health / diagnostic tool. Always consult a healthcare professional before starting any fasting regimen. For feedback, we love hearing from you: myfastingapptracker@gmail.com Privacy Policy & Terms of Use: https://fastingapp.wordpress.com/terms-of-use/ Website: https://fastingapp.wordpress.com/

About

MirrorUp21

This app guides you through a 21-day mirror work program using AI to create personalized daily tasks. It helps improve self-acceptance, reduce anxiety, and enhance emotional well-being through positive affirmations and guided exercises. Practice anytime, anywhere with real-time feedback and secure, private data storage.

Highlights
  • AI-powered personalized 21-day plans
  • Daily guided mirror exercises
  • Real-time voice feedback
  • Intelligent completion tracking
  • Zero registration and local data storage
  • TouchID/FaceID security locks
Read full description

Why Choose MirrorUp21? The Scientifically Proven Path to Transformation - Psychological Empowerment Mirror exercises can help people change their negative views of themselves and the world. It encourages individuals to repeat positive affirmations in front of the mirror (such as "I love myself" or "I am worthy of love") to transform their inner beliefs. This practice helps individuals increase self-acceptance, reduce inner fear and self-criticism, and improve emotional and mental health. - Skill Mastery Pro athletes' secret weapon! Use mirror observation to refine technical details (e.g., shooting posture, dribbling rhythm) and double training efficiency through real-time corrections. - Emotional Healing Verified by 50,000+ users on NetEase and Xiaohongshu: Daily mirror smiles and self-dialogue reduce anxiety and awaken inner strength. A simple "I am exceptional" resets your daily energy. MirrorUp21's Unique Features – Your Phone Becomes a "Smart Magic Mirror" - AI-Powered 21-Day Mirror Work Input your goals, and our AI (powered by DeepSeek fine-tuned models) crafts a personalized plan – no generic templates. - Daily Guided Tasks Based on Louise Hay's "self-love" philosophy: Progressive tasks from smile challenges to deep self-dialogue. Customizable reminders fit your schedule. - Real-Time Feedback & Tracking The front-facing camera records check-in videos, provides real-time voice feedback, intelligently recognizes the number of completions, helping you effortlessly accomplish your check-in tasks. Your progress, clear at a glance! - Zero Registration, Full Privacy No accounts needed. All data stays local. Add TouchID/FaceID locks for extra security. Why Try MirrorUp21? - Science-backed: 21-day golden cycle + mirror practice + data-driven progress tracking - Anytime, anywhere: Practice even without a physical mirror - 100% private: Your growth journey stays entirely yours Psychologists and Healing Experts Recommend: "Mirror exercises are an effective tool for self-acceptance and can help break the cycle of negative self-judgment." — Carl Rogers, Humanistic Psychologist "Through mirror exercises, people can change their self-perception and emotional responses. Positive self-talk can significantly improve mental states." — Albert Bandura, Founder of Social Cognitive Theory "Self-acceptance is key to mental health. Mirror exercises help individuals see themselves and build a positive relationship with themselves, which is the first step in therapy." — Virginia Satir, Family Therapy Expert "Doing mirror exercises is one of the best gifts you can give yourself in this lifetime." — Louise Hay, Self-Healing Expert

Screenshots

Simple Fasting Tracker4 screens
MirrorUp214 screens

Verdict

The call

The clearest difference is price: Simple Fasting Tracker at Free against MirrorUp21's $1.99. Simple Fasting Tracker also leads on ratings volume (60 vs 2) and device support (4 vs 1). MirrorUp21's advantage is in-app purchases (none vs 6) and review sentiment (88% vs 78%). On rating, update cadence, ads and iOS requirement 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

Simple Fasting Tracker is free to download; MirrorUp21 costs $1.99 up front. Simple Fasting Tracker sells 6 in-app purchases, starting at $4.99 per 7 days. MirrorUp21 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MirrorUp21 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Simple Fasting Tracker has 60 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 78% of Simple Fasting Tracker's written reviews are positive against 88% of MirrorUp21's.

UpkeepUpdate frequency

Simple Fasting Tracker ships an update every 2 weeks, MirrorUp21 every 9 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Simple Fasting Tracker versus MirrorUp21: the parameters behind the verdict, then further details
ParameterSimple Fasting TrackerMirrorUp21
PriceFree — better$1.99
Rating4.8 (60 ratings)5.0 (2 ratings) — better
Positive reviews77.8% of reviews87.5% of reviews — better
Number of ratings60 — better2
Update frequencyEvery 2 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better16.6
Further details — not scored
Size47 MB62 MB
Age rating12+4+
DeveloperMamta ShahMindPower(HongKong) Limited

Customer experience

Simple Fasting Tracker

All ratings60 ratings
Positive96.7%
Neutral1.7%
Negative1.7%
Written reviews9 reviews
Positive77.8%
Neutral11.1%
Negative11.1%

MirrorUp21

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

In-app purchases

6 purchases

Simple Fasting Tracker

Subscriptions5
  • Weekly- Intermittent fasting$4.997 Days
  • Monthly - Intermittent fasting3 Days trial$9.991 Month
  • Year Promo - Fasting Tracker$14.991 Year
Show 2 more
  • Yearly - Intermittent Fasting1 Year trial$24.991 Year
  • Yearly - Intermittent fasting3 Days trial$24.991 Year
One-time1
  • Lifetime - Fasting Tracker$49.99
None

MirrorUp21

No in-app purchases

Questions

Is Simple Fasting Tracker free?
Simple Fasting Tracker is free to download, with in-app purchases available.
Is MirrorUp21 free?
MirrorUp21 costs $1.99, with no in-app purchases.
Which has better reviews, Simple Fasting Tracker or MirrorUp21?
MirrorUp21 is rated higher. Simple Fasting Tracker averages 4.8 out of 5 from 60 ratings, while MirrorUp21 averages 5.0 from 2 ratings.
Do Simple Fasting Tracker or MirrorUp21 have ads?
Neither Simple Fasting Tracker nor MirrorUp21 shows ads.
Which is updated more often, Simple Fasting Tracker or MirrorUp21?
Simple Fasting Tracker ships an update every 2 weeks, and MirrorUp21 every 9 days. Most recently, Simple Fasting Tracker was updated on October 25, 2026 and MirrorUp21 on October 24, 2026.

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