# 12Calendar vs Add Calendar Basic

The clearest difference is rating: 12Calendar at 3.2 against Add Calendar Basic's 1.0. 12Calendar also leads on ads (none vs shown) and ratings volume (11 vs 1). Add Calendar Basic's advantage is in-app purchases (none vs 4) and update cadence (monthly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. 12Calendar sells 4 one-off in-app purchases. Add Calendar Basic asks for nothing beyond the download.

12Calendar holds the better App Store score, 3.2 against 1.0. That said, the two scores are not equally well evidenced: 12Calendar has 11 ratings behind it against 1, so its average is the more settled of the two.

12Calendar ships an update every 3 months, Add Calendar Basic monthly. The most recent releases landed on October 8, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | 12Calendar | Add Calendar Basic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (11 ratings)](https://appshunter.io/ios/app/12calendar/id598504307/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/add-calendar-basic/id1482436846/reviews) |
| Number of ratings | **11** | 1 |
| Positive reviews | 61.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 3 MB | 34 MB |
| Requires iOS | 17.0 | **11.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [lagoon](https://appshunter.io/developer/455492858) | [cho seonghyun](https://appshunter.io/developer/1436483241) |

## 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 |


### Add Calendar Basic

[App page](https://appshunter.io/ios/app/add-calendar-basic/id1482436846)

This utility app allows users to add custom calendars directly to their device wallpaper. It also offers a convenient feature for managing 3-shift work schedules.

**Highlights:** Add custom calendars to wallpaper, 3-shift work schedule management, Wallpaper integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 12Calendar free?

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

### Is Add Calendar Basic free?

Add Calendar Basic is free to download, with no in-app purchases.

### Which has better reviews, 12Calendar or Add Calendar Basic?

12Calendar is rated higher. 12Calendar averages 3.2 out of 5 from 11 ratings, while Add Calendar Basic averages 1.0 from 1 ratings.

### Do 12Calendar or Add Calendar Basic have ads?

Add Calendar Basic shows ads; 12Calendar does not.

### Which is updated more often, 12Calendar or Add Calendar Basic?

12Calendar ships an update every 3 months, and Add Calendar Basic monthly. Most recently, 12Calendar was updated on October 8, 2026 and Add Calendar Basic on September 28, 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.*