# MD Clock vs Reef Tank Log

The clearest difference is device support: MD Clock at 4 against Reef Tank Log's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. MD Clock sells 14 in-app purchases, starting at $0.99 per month and Reef Tank Log sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

MD Clock ships an update every 9 days, Reef Tank Log every 5 days. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | MD Clock | Reef Tank Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (6.6K ratings)](https://appshunter.io/ios/app/md-clock-flip-clock/id1536358464/reviews)** | — |
| Number of ratings | **6.6K** | — |
| Positive reviews | 47.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Subscription | — |
| Size | 393 MB | 55 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MD Studio](https://appshunter.io/developer/1438854445) | [CODEENSIS LTD](https://appshunter.io/developer/859208704) |

## What reviewers say

### MD Clock

[App page](https://appshunter.io/ios/app/md-clock-flip-clock/id1536358464)

A beautifully designed digital clock app offering a variety of themes and customization options. It supports dynamic widgets, StandBy mode, and multiple timers and alarms, enhancing your workspace and daily routines.

**Highlights:** 24 exquisite themes, Liquid Glass design adaptation, Customizable widgets, StandBy mode support, Multiple timers and alarms, Refined animation and sound effects

**Features:** Family Sharing, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MD Clock Premium (1 MONTH) | $0.99 | per month |
| MD Clock Premium | $1.99 | per 7 days |
| MD Clock Premium (1 YEAR) | $4.49 | per year |
| MD Clock Premium | $4.49 | per year |
| MD Clock Premium | $4.49 | per year |
| MD Clock Premium | $9.99 | per year |
| Black white & grey | $0.99 | one-time |
| Wood | $0.99 | one-time |
| AllTools | $4.99 | one-time |
| All Clocks | $5.99 | one-time |
| MD Clock Premium | $8.99 | one-time |
| MD Clock Premium | $9.99 | one-time |
| MD Clock Premium | $12.99 | one-time |
| MD Clock Premium | $24.99 | one-time |

**What reviewers like**

- 🚀 Smooth performance
- 👍 Aesthetically pleasing designs
- 🔒 Secure and reliable
- 💡 Useful widget functionality

**What reviewers complain about**

- 💰 Majority of features locked behind paywall
- 🐛 Inconsistent widget behavior
- 🔋 Potential battery drain issues
- 📦 Limited free clock options

**Reported bugs**

- Widgets not loading properly
- Clock time inaccuracies
- Subscription issues across devices

**Requested features**

- Add more free clock designs
- Allow customization of widget backgrounds
- Implement multi-timezone support
- Integrate with Apple Music for alarm tones


### Reef Tank Log

[App page](https://appshunter.io/ios/app/reef-tank-log-parameters/id6809114804)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $19.99 | per year |
| Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is MD Clock free?

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

### Is Reef Tank Log free?

Reef Tank Log is free to download, with in-app purchases available.

### Do MD Clock or Reef Tank Log have ads?

Neither MD Clock nor Reef Tank Log shows ads.

### Which is updated more often, MD Clock or Reef Tank Log?

MD Clock ships an update every 9 days, and Reef Tank Log every 5 days. Most recently, MD Clock was updated on October 19, 2026 and Reef Tank Log on October 18, 2026.

---

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