# Fullscreen Clock vs UltraBoard

The clearest difference is monetization model: Fullscreen Clock at free with in-app purchases against UltraBoard's subscription. Fullscreen Clock also leads on rating (4.7 vs 4.5) and ratings volume (2.2K vs 190). UltraBoard's advantage is update cadence (every 2 days vs every 9 days) and iOS requirement (11.0 vs 15.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Fullscreen Clock sells 1 one-off in-app purchase and UltraBoard sells 1 in-app purchase, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Fullscreen Clock holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Fullscreen Clock has 2.2K ratings behind it against 190, so its average is the more settled of the two. Written reviews complicate that: 76% of Fullscreen Clock's written reviews are positive against 80% of UltraBoard's, so the app with the better star average is not the one people write more warmly about.

Fullscreen Clock ships an update every 9 days, UltraBoard every 2 days. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Fullscreen Clock | UltraBoard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/fullscreen-clock-flip-and-focus/id1403700342/reviews)** | [4.5 (190 ratings)](https://appshunter.io/ios/app/ultraboard/id1547214365/reviews) |
| Number of ratings | **2.2K** | 190 |
| Positive reviews | 76.0% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 18 MB | 73 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Gude Aipu Technology Co., Ltd](https://appshunter.io/developer/1896411340) | [Lisfee, Inc.](https://appshunter.io/developer/1146331015) |

## What reviewers say

### Fullscreen Clock

[App page](https://appshunter.io/ios/app/fullscreen-clock-flip-and-focus/id1403700342)

Transform your device into a stylish flip clock that doubles as a productivity tool. Enhance your workspace with aesthetic widgets and utilize the integrated focus timer for improved concentration during study or work sessions.

**Highlights:** Iconic flip clock animation, Deep focus timer (Pomodoro/custom), Stunning home screen widgets, Elegant and minimalist interface, Extensive customization options, Versatile timers and stopwatch, Floating clock for iPadOS

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP | $2.99 | one-time |

**What reviewers like**

- 🚀 Efficient
- 👍 Simple and useful
- 👍 Great tool
- 👍 Excellent app
- 👍 Awesome clock

**What reviewers complain about**

- 🐛 Ads disrupt usage
- 🐛 Buggy widget
- 🔋 Drains battery
- 👎 Hard to exit
- 👎 Annoying ads

**Reported bugs**

- Widget doesn't adjust for DST
- Clock resets when exiting app
- Hangs up on some devices
- Ads cover the clock

**Requested features**

- Add color customization
- Integrate date display
- Add 12-hour time format with AM/PM
- Improve countdown timer functionality
- Add stopwatch widget


### UltraBoard

[App page](https://appshunter.io/ios/app/ultraboard/id1547214365)

Create and organize digital notes and boards using your Apple Pencil, stylus, or finger. Customize line color and width, and save your creations into categorized folders. This app offers a subscription for enhanced features.

**Highlights:** Digital whiteboard and blackboard, Apple Pencil, stylus, and finger input, Customizable line color and width, Save and categorize notes/boards, Folder organization

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold Plan | $8.99 | per month |


## Frequently asked questions

### Is Fullscreen Clock free?

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

### Is UltraBoard free?

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

### Which has better reviews, Fullscreen Clock or UltraBoard?

Fullscreen Clock is rated higher. Fullscreen Clock averages 4.7 out of 5 from 2.2K ratings, while UltraBoard averages 4.5 from 190 ratings.

### Do Fullscreen Clock or UltraBoard have ads?

Both Fullscreen Clock and UltraBoard show ads.

### Which is updated more often, Fullscreen Clock or UltraBoard?

Fullscreen Clock ships an update every 9 days, and UltraBoard every 2 days. Most recently, Fullscreen Clock was updated on October 18, 2026 and UltraBoard on October 14, 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.*