# 12Calendar — Lock screen wallpaper calendar

> Lock screen wallpaper calendar customization tool with importable holidays. (iPhone/iPad app by lagoon.)

- Source: https://appshunter.io/ios/app/12calendar/id598504307 (this page in markdown: same URL + `.md`)
- Developer: [lagoon](https://appshunter.io/developer/455492858)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Rating: 3.18/5 from 11 App Store ratings · 65 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: Arabic, English, French, German, Japanese, Korean, Portuguese, Russian, Chinese, Spanish and 3 more
- Released: 2013-02-15
- Data updated: 2026-06-11
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/12calendar/id598504307/reviews.md

## What is 12Calendar?

Every time you open your lock screen, a beautiful calendar is right there to greet you.
That's the everyday experience 12Calendar creates.

Customize fonts, colors, and layouts to build a calendar wallpaper
that's uniquely yours — simply and easily.


■ Layouts
Choose from 28 calendar layouts.
Free Layout mode lets you drag and resize each calendar freely.
- You can change the size from the popup that appears when you tap the calendar.


■ Customize Every Detail
- Individual color settings for weekdays, Saturdays, and Sundays
- Day-of-week display language
- 12 fonts with adjustable text size
- Background opacity and border visibility
- Week start day (Sunday or Monday)


■ Holiday Support
Add holidays manually within the app.
With an in-app purchase, holidays can be imported from your iOS Calendar.


■ How to Set Your Wallpaper
After saving your calendar, set it as your wallpaper via the Photos app or iOS Settings.
(Wallpaper cannot be changed directly from within this app.)


※ App Store screenshots were created using Screenshots.pro.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (10 of 65)

All indexed reviews: https://appshunter.io/ios/app/12calendar/id598504307/reviews.md

### 3/5 — 休日の色

*2026-04-16, version 2.0.1*

自分用の休日の色分けができなくなってびっくり。
残念、長年使ってきたのに。文字入力では見づらいし祝日と同じ色だと意味ないです。

### 4/5 — カレンダーの大きさ？

*2026-04-13, version 2.0.0*

あれっ、カレンダーの大きさ変えられなくなりました？
前バージョンではピンチインで小さく出来ていた気がするのですが…。。

### 3/5 — 最新機種に対応して欲しい

*2025-03-16, version 1.9.0*

iPhone7plusを使い続けてたもので、毎月1回、写真を選んでカレンダー部分を変える作業も苦でなく使っていたのですが、iPhone16eに変更したら、画面サイズ対応してなくて、残念です。

### 1/5 — No clock

*2023-12-16, version 1.9.0*

I downloaded this app to my Iphone XR, no clock, just the calendar. I deleted it

### 5/5 — Excellent.

*2023-01-02*

Absolutely love this app. Paid a small amount to unlock some features and waiting to proceed with implementing same. Love that you can fill in holidays for your own country in settings. This app is just perfect for lock screen. Looked and tried others, but this one is way ahead in simplicity and for what you need it for. 👍👌

### 3/5 — けっこう

*2022-09-28, version 1.9.0*

いい。

### 1/5 — バグですか？

*2021-11-12, version 1.9.0*

設定画面でいろんな項目を設定しようとしましたが、選択項目が表示されないため、設定できませんでした。改善をおねがいします。

### 4/5 — カッコイイ

*2021-07-26, version 1.8.1*

なかなか使えると思います

### 2/5 — Poorly made, please fix

*2020-06-03, version 1.7.1*

App keeps crashing. UI has a weird layout that is hard to use. English translations are poor. Hesitant to buy until these issues are fixed.

### 4/5 — Very nice

*2020-05-16, version 1.7.1*

Fairly easy to use, very customizable. It would nice to be able to highlight the current day but other than that nice app. It does what I want it to.

## Frequently asked questions about 12Calendar

### How do I add holidays to 12Calendar?

You can manually add holiday data to 12Calendar. For easier input, an in-app purchase allows you to register holidays by reading data directly from your device's iOS calendar.

### Can 12Calendar display the calendar on my lock screen automatically?

No, 12Calendar does not automatically change the lock screen. Users must manually set the preserved calendar as their lock screen wallpaper through their device settings.

### What customization options does 12Calendar offer?

12Calendar offers extensive customization, including 24 regular and 1 free layout, over 20 built-in fonts, adjustable font size, and individual color changes for backgrounds and borders on holidays, Saturdays, and Sundays.

### Does 12Calendar have ads?

No, 12Calendar does not contain advertisements.

### What is the update frequency for 12Calendar?

12Calendar was last updated on February 16, 2026, indicating recent development activity. The latest version is 1.9.2.

### What devices is 12Calendar compatible with?

12Calendar is compatible with iPhone and iPod devices.

### What is the age rating for 12Calendar?

12Calendar has an age rating of 4+, making it suitable for a wide range of users.

### How does 12Calendar's rating compare to other calendar apps?

12Calendar has a rating of 3.2 stars from 11 ratings. This suggests a mixed user reception, with some users finding it useful and others encountering issues.

## Version history (last 5 releases)

### 2.0.3 — 2026-04-28

Fixed a bug where months were displayed in the wrong order in some 3-month and 6-month calendar layouts.

### 1.9.2 — 2026-02-16

I have made it possible to configure the wallpaper size and the calendar’s display position.

### 1.9.1 — 2025-12-16

Fixed a bug where text appeared to be invisible in dark mode.

### 1.9.0 — 2021-10-09

- iOS 15 support
- iPhone 13 series support

### 1.8.1 — 2021-01-03

- iOS 14 support
- iPhone 12 series support
- Bug fixes
・Fixed the problem of abnormal termination on the holiday addition screen.
・Fixed the display problem of the function restriction screen
・Fixed the problem that the screen color was not reflected

## Apps similar to 12Calendar

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Desktop Calendar - WallCal](https://appshunter.io/ios/app/desktop-calendar-wallcal/id1636126771) | — | Free | Utilities |
| [COLON - シンプルでスタイリッシュなデジタル時計](https://appshunter.io/ios/app/colon/id1601664426) | 5.0 (1) | Free | Utilities |
| [SFClock](https://appshunter.io/ios/app/sfclock/id1627863783) | 4.5 (4) | Free | Utilities |
| [ねこ梱包 - 箱詰めできる数をねこが計算します](https://appshunter.io/ios/app/id1660969959) | — | Free | Utilities |
| [Smart Clock+](https://appshunter.io/ios/app/smart-clock-plus/id6739153399) | — | Free | Utilities |
| [AnyCal](https://appshunter.io/ios/app/anycal/id725215673) | 4.6 (14) | Free | Utilities |

## Related topics

[12calendar](https://appshunter.io/ios/topics/12calendar)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*