# Mark Off vs HydroFasting

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.

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.

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

## The numbers

| Metric | Mark Off | HydroFasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (320 ratings)](https://appshunter.io/ios/app/mark-off-calendar-and-tracker/id1434848437/reviews)** | — |
| Number of ratings | **320** | — |
| Positive reviews | 79.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 52 MB | 34 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Viktor Gavrilov](https://appshunter.io/developer/1324295185) | [ASAPP STUDIO](https://appshunter.io/developer/1338092352) |

## What reviewers say

### Mark Off

[App page](https://appshunter.io/ios/app/mark-off-calendar-and-tracker/id1434848437)

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:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mark Off Premium | $9.99 | per year |
| Lifetime - Premium | $49.99 | one-time |

**What reviewers like**

- 👍 Simple and intuitive interface
- ✅ Effective habit and streak tracking
- 🎨 Customizable colors and marking options
- 📱 Excellent home screen widgets
- 🔄 Reliable data sync and backup features

**What reviewers complain about**

- 🐛 Frequent data loss and deletion issues
- 🐛 App freezing and crashing problems
- 🐛 Widget functionality inconsistencies
- 🐛 Year view glitches and blank screens
- 📺 Excessive advertisements in free version

**Reported bugs**

- 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

**Requested features**

- 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


### HydroFasting

[App page](https://appshunter.io/ios/app/hydrofasting/id6764896316)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime Access | $0.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*