# 12Calendar vs Flip Clock

The clearest difference is rating: Flip Clock at 4.6 against 12Calendar's 3.2. Flip Clock also leads on ratings volume (72K vs 11) and update cadence (monthly vs every 3 months). 12Calendar's advantage is ads (none vs shown). On price, in-app purchases and monetization model there is nothing between them.

Both are free to download. 12Calendar sells 4 one-off in-app purchases and Flip Clock sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Flip Clock holds the better App Store score, 4.6 against 3.2. That said, the two scores are not equally well evidenced: Flip Clock has 72K ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 62% of 12Calendar's written reviews are positive against 72% of Flip Clock's.

12Calendar ships an update every 3 months, Flip Clock monthly. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | 12Calendar | Flip Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (11 ratings)](https://appshunter.io/ios/app/12calendar/id598504307/reviews) | **[4.6 (72K ratings)](https://appshunter.io/ios/app/flip-clockdigital-desk-widget/id1181028777/reviews)** |
| Number of ratings | 11 | **72K** |
| Positive reviews | 61.5% of reviews | **72.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 3 MB | 80 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [lagoon](https://appshunter.io/developer/455492858) | [翠玲 施](https://appshunter.io/developer/1181028776) |

## What reviewers say

### 12Calendar

[App page](https://appshunter.io/ios/app/12calendar/id598504307)

Customize your lock screen with a calendar. Choose from various layouts, fonts, and colors to display your schedule conveniently. Add custom holidays by importing from your device's calendar.

**Highlights:** Customizable calendar layouts, Selectable fonts and colors, Adjustable transparency and frame borders, Add custom holiday data, Import holidays from iOS calendar, Display year, month, and day of the week

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | Free | one-time |
| Hide Logo & SAVE available | $0.99 | one-time |
| Enable load calendar | $0.99 | one-time |
| Clear all functional limitation | $1.99 | one-time |


### Flip Clock

[App page](https://appshunter.io/ios/app/flip-clockdigital-desk-widget/id1181028777)

This app provides a classic digital clock widget for your device's home, lock, and standby screens. It offers features like displaying seconds, a calendar, customizable themes, and various timekeeping tools including alarms, timers, and stopwatches. It can also function as a screensaver when charging.

**Highlights:** Display seconds on multiple screens, Full screen time and date, Smart alarm clock, Timer and stopwatch, Countdown to target dates, Pomodoro Technique timer, Customizable widget signatures

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Digital Clock 2 | $0.99 | one-time |
| Digital Clock 3 | $0.99 | one-time |
| Digital Clock 4 | $0.99 | one-time |
| Digital Clock 5 | $0.99 | one-time |
| Digital Clock 6 | $0.99 | one-time |
| Simulated Desk Fan 1 | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| More clock skins | $0.99 | one-time |
| Flip Clock Professional Edition | $2.99 | one-time |
| Unlock All Screensavers | $9.99 | one-time |

**What reviewers like**

- 👍 Simple and effective
- 🎨 Aesthetic design
- ⏱️ Useful timer and alarm features
- 🔍 Highly visible and readable clock
- 🤩 Great for productivity and focus

**What reviewers complain about**

- 🔍 Limited customization options
- 🔋 Battery drain issues
- 📢 Excessive ads
- 🔒 Unreliable unlock/restore purchases
- 🐛 Bugs and glitches

**Reported bugs**

- Clock freezing or not updating correctly
- Alarm issues (not triggering, unable to disable)
- Inconsistent behavior across devices and OS versions
- Unlock/restore purchase bugs

**Requested features**

- More clock face and color options
- Automatic dark/light mode switching
- Ability to set clock as device wallpaper
- Improved alarm functionality and customization
- Seamless integration with other devices


## Frequently asked questions

### Is 12Calendar free?

12Calendar is free to download, with in-app purchases available.

### Is Flip Clock free?

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

### Which has better reviews, 12Calendar or Flip Clock?

Flip Clock is rated higher. 12Calendar averages 3.2 out of 5 from 11 ratings, while Flip Clock averages 4.6 from 72K ratings.

### Do 12Calendar or Flip Clock have ads?

Flip Clock shows ads; 12Calendar does not.

### Which is updated more often, 12Calendar or Flip Clock?

12Calendar ships an update every 3 months, and Flip Clock monthly. Most recently, 12Calendar was updated on November 1, 2026 and Flip Clock on November 10, 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.*