Comparison

Mark Off vs HydroFasting

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

Head to head
About

Mark Off

Organize your life and visualize progress with a versatile calendar and tracker. Create custom calendars for habits, travel, deadlines, work, and more, with visual progress tracking and customizable widgets.

Highlights
  • Multiple calendar types (habits, travel, deadlines, work)
  • Streak tracking and statistics
  • Visual progress tracking
  • Customizable widgets
  • Add custom images to dates
  • Life journey visualization
Features
Read full description

Welcome to MARK OFF: Tracker & Calendar, the ultimate visual tool to organize your life, track your habits and visualize your progress like never before! MARK OFF allows you to create 10 different types of calendars: 1. STREAK: Cultivate positive habits with streak tracking and insightful statistics. Customize day types, colors, and image creation to stay motivated and focused. You are not limited to tracking only daily habits - "neutral" days are added to separate bad days from the normal days without an activity.
 2. TRAVEL: Log your adventures, visualize visited countries, and plan future trips effortlessly. Customize travel destinations and track visas for seamless travel planning. Add locations of visited cities and places and see them on one map. Create your own Custom Countries with a picture you want, which allows you to fit the calendar to your needs, i.e. show trips in the Cities or States
 3. ACTIVITY: Monitor activities, moods, sports, symptoms and more with customizable image creation and detailed progress tracking. Enhance productivity and well-being with personalized insights.
 4. DEADLINE: Stay organized and never miss a deadline again with intuitive deadline tracking. Monitor days before and after important dates to stay ahead of your tasks. For each deadline you could specify a name and a color. Create annual deadlines to track birthdays and anniversaries. 5. EMOJI: Express your daily moods and activities with emojis, creating unique images for each day. Track progress effortlessly and add multiple emojis to capture every moment.
 6. WORK: Streamline work schedules, projects, and time off with customizable work types and schedules. Easily manage multiple projects and stay organized with manual entry options.
You could have several schedules in parallel, i.e. to see when you and your partner are both free. 
 7. PROJECTS: Effectively manage projects with customizable periods and visual tracking directly on the calendar. Stay on top of deadlines and milestones with ease.
 8. LIFE: Gain a holistic view of your life journey, track important moments, and visualize life stages effortlessly. Reflect on your past experiences and plan for the future with clarity.
This calendar is inspired by WaitButWhy blog post "Your Life in Weeks” - Each square on calendar represents one week of your life
 9. PHOTO: Enjoy daily surprises with random photos or create a personalized photo calendar with your favorite snapshots. Add a personal touch to each day and cherish memories with ease.
 10. BASIC: Keep it simple with a traditional calendar where you can draw pictures for each day. Express your creativity and add personal touches to your calendar effortlessly. Other Features: - Fully Customizable Widgets: Access your calendars directly from your home screen with customizable widgets. Personalize colors, fonts and additional info for a tailored experience. - Custom Images: Create and add custom images to any date with a long tap, enhancing your calendar with personal touches and memories. - PDF reports, i.e. monthly/yearly reports with a total number of days you spent in each country, which is useful for tax and legal purposes
- Notes: Add notes to any date to remember important things - Export and Import: Seamlessly export and import calendars and widgets from the app settings for convenience and flexibility. - iCloud sync and local backups: Access your calendars from different devices Make Every Day Count: Mark Off empowers you to organize your life, track your progress, and turn your goals into achievements. Download now and start making the most of each day! I hope that MARK OFF will brighten up your waiting time and help you improve your habits. I would love to know about your success stories or ideas about the app, just write me an email from the app Settings

About

HydroFasting

Features
Read full description

HydroFasting is a simple and powerful intermittent fasting tracker designed to help you stay consistent and build healthy habits. Track your fasting windows, monitor hydration, and log your weight progress — all in one clean and easy-to-use app. Whether you're following 16:8, 18:6, or custom fasting plans, HydroFasting keeps you on track with reminders and progress insights. Features: • Fasting timer with popular plans • Water intake tracking • Weight progress monitoring • Daily reminders & notifications • Clean and minimal interface • Dark mode support HydroFasting does not provide medical advice. Always consult a professional for health-related decisions.

Screenshots

Mark Off4 screens
HydroFasting4 screens

Verdict

The call

The clearest difference is ads: HydroFasting at none against Mark Off's shown. HydroFasting also leads on update cadence (weekly vs monthly). On price, in-app purchases, device support 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

Both are free to download. Mark Off sells 2 in-app purchases, starting at $9.99 per year and HydroFasting sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Mark Off ships an update monthly, HydroFasting weekly. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
Mark Off versus HydroFasting: the parameters behind the verdict, then further details
ParameterMark OffHydroFasting
PriceFreeFree
Rating4.5 (320 ratings) — better—
Positive reviews79.1% of reviews—
Number of ratings320 — better—
Update frequencyMonthlyWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.5 — better
Further details — not scored
Size52 MB34 MB
Age rating4+9+
DeveloperViktor GavrilovASAPP STUDIO

Bugs and requests

Mark Off

Reported bugs

10 issues
  • Data wiped after app updates
  • App freezes when logging daily entries
  • Widgets fail to load or update properly
  • Year view displays blank/glitched
  • Month calendar view not showing marked days
Show 5 more
  • Unable to add widgets to home screen
  • Day saving doesn't persist across sessions
  • Premium subscription ads reappear via widgets
  • Life calendar start/end date editing issues
  • Feedback button non-functional

Requested features

6 requests
  • Desktop/web version with cloud sync
  • Quick checkbox option without opening day details
  • Streak counter widget display
  • Ability to set past dates for life calendar chapters
  • Improved setup and onboarding experience
Show 1 more
  • Better documentation on feature usage

HydroFasting

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Mark Off

Subscriptions1
  • Mark Off Premium$9.991 Year
One-time1
  • Lifetime - Premium$49.99
1 purchases

HydroFasting

One-time1
  • Premium Lifetime Access$0.99

Questions

Is Mark Off free?
Mark Off is free to download, with in-app purchases available.
Is HydroFasting free?
HydroFasting is free to download, with in-app purchases available.
Do Mark Off or HydroFasting have ads?
Mark Off shows ads; HydroFasting does not.
Which is updated more often, Mark Off or HydroFasting?
Mark Off ships an update monthly, and HydroFasting weekly. Most recently, Mark Off was updated on October 29, 2026 and HydroFasting on October 27, 2026.

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