# DuoCal vs Chikuwa Diary

The clearest difference is update cadence: Chikuwa Diary at every 4 weeks against DuoCal's every 3 months. DuoCal's advantage is review sentiment (100% vs 83%) and iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. DuoCal sells 2 one-off in-app purchases and Chikuwa Diary sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

DuoCal ships an update every 3 months, Chikuwa Diary every 4 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | DuoCal | Chikuwa Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/duocal/id1502205499/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 39 MB | 30 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [WAZAnauts LLC](https://appshunter.io/developer/1452730041) | [Tenta Shinojima](https://appshunter.io/developer/1506707649) |

## What reviewers say

### DuoCal

[App page](https://appshunter.io/ios/app/duocal/id1502205499)

Compare monthly calendars side-by-side from different years or months. Organize events with customizable labels and share your schedule with others. Syncs with iOS and Google calendars.

**Highlights:** Side-by-side calendar view, Multiple calendar creation, Calendar sharing via Dropbox, iOS and Google Calendar sync, Customizable labels with colors and sizes, Label templates, Memos separate from dates

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Import Palu calendars | $0.99 | one-time |
| Remove Ads | $8.99 | one-time |


### Chikuwa Diary

[App page](https://appshunter.io/ios/app/chikuwa-diary/id1506707650)

This app allows you to journal, track books and movies, and organize ideas using multiple notebooks. It offers automatic iCloud syncing for seamless access across devices and supports image attachments. Organize your life's moments and information effortlessly.

**Highlights:** Multiple notebooks for different themes, Book tracking with information retrieval, Movie recording and search, Collection feature for organizing information, Automatic iCloud notebook sync, Image attachment support, Widget support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chikuwa+ Plan for 1 months | $3.99 | per month |
| Chikuwa+ Plan for 6 months | $14.99 | per 6 months |


## Frequently asked questions

### Is DuoCal free?

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

### Is Chikuwa Diary free?

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

### Do DuoCal or Chikuwa Diary have ads?

Both DuoCal and Chikuwa Diary show ads.

### Which is updated more often, DuoCal or Chikuwa Diary?

DuoCal ships an update every 3 months, and Chikuwa Diary every 4 weeks. Most recently, DuoCal was updated on November 3, 2026 and Chikuwa Diary on November 3, 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.*