# Arucocca vs kolog

The clearest difference is update cadence: kolog at every 3 days against Arucocca's weekly. kolog also leads on iOS requirement (16.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Arucocca sells 3 in-app purchases, starting at $2.99 per month and kolog sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Arucocca ships an update weekly, kolog every 3 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Arucocca | kolog |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 53 MB | 83 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SHIN SUGITANI](https://appshunter.io/developer/1803875601) | [Yasuhiro Yamamoto](https://appshunter.io/developer/1740204994) |

## What reviewers say

### Arucocca

[App page](https://appshunter.io/ios/app/arucocca-plan-and-journal/id6788480352)

This app offers a unique timeline-based approach to planning and journaling, focusing on upcoming events and personal feelings. It allows users to log their emotions before and after plans, creating a personal diary of experiences. Designed for those overwhelmed by traditional calendars, it provides a calm and focused way to manage life's events.

**Highlights:** Timeline view instead of calendar grid, Feeling stamps for plans, After-plan logging with notes and photos, Diary creation from logs, Gentle notifications, iCloud sync, Data export

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $2.99 | per month |
| Premium (Yearly) | $19.99 | per year |
| Premium (Lifetime) | $59.99 | one-time |


### kolog

[App page](https://appshunter.io/ios/app/kolog/id6814111371)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer | $0.99 | one-time |


## Frequently asked questions

### Is Arucocca free?

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

### Is kolog free?

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

### Do Arucocca or kolog have ads?

Neither Arucocca nor kolog shows ads.

### Which is updated more often, Arucocca or kolog?

Arucocca ships an update weekly, and kolog every 3 days. Most recently, Arucocca was updated on October 31, 2026 and kolog 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.*