# 日本旅日記 vs SkyLog

The clearest difference is in-app purchases: 日本旅日記 at none against SkyLog's 2. 日本旅日記 also leads on ads (none vs shown) and update cadence (every 2 days vs fortnightly). On price and device support there is nothing between them.

Both are free to download. SkyLog sells 2 in-app purchases, starting at $2.99 per month. 日本旅日記 asks for nothing beyond the download.

日本旅日記 ships an update every 2 days, SkyLog fortnightly. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 日本旅日記 | SkyLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Fortnightly |
| Size | 68 MB | 108 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [takafumi naito](https://appshunter.io/developer/624435912) | [SUNYOUNG PARK](https://appshunter.io/developer/6788016402) |

## What reviewers say

### 日本旅日記

[App page](https://appshunter.io/ios/app/id6786138606)

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

**In-app purchases:** none


### SkyLog

[App page](https://appshunter.io/ios/app/skylog-flight-logbook/id6788016400)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SkyLog Plus Monthly | $2.99 | per month |
| SkyLog Plus Yearly | $24.99 | per year |


## Frequently asked questions

### Is 日本旅日記 free?

日本旅日記 is free to download, with no in-app purchases.

### Is SkyLog free?

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

### Do 日本旅日記 or SkyLog have ads?

SkyLog shows ads; 日本旅日記 does not.

### Which is updated more often, 日本旅日記 or SkyLog?

日本旅日記 ships an update every 2 days, and SkyLog fortnightly. Most recently, 日本旅日記 was updated on October 31, 2026 and SkyLog on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*