# Souj vs Inkday

The clearest difference is in-app purchases: Souj at none against Inkday's 3. Souj also leads on iOS requirement (16.0 vs 18.0). Inkday's advantage is device support (4 vs 1). On price, update cadence and ads there is nothing between them.

Both are free to download. Inkday sells 3 in-app purchases, starting at $1.99 per month. Souj asks for nothing beyond the download.

Souj ships an update every 9 days, Inkday weekly. The most recent releases landed on October 28, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Souj | Inkday |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Size | 98 MB | 23 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Moonote Co., Ltd.](https://appshunter.io/developer/1895727282) | [ChienHsiang Yin](https://appshunter.io/developer/1158778730) |

## What reviewers say

### Souj

[App page](https://appshunter.io/ios/app/souj/id6764310901)

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases:** none


### Inkday

[App page](https://appshunter.io/ios/app/inkday-private-journal/id6797171199)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inkday Pro (Monthly) | $1.99 | per month |
| Inkday Pro (Yearly) | $7.99 | per year |
| Inkday Pro (Lifetime) | $14.99 | one-time |


## Frequently asked questions

### Is Souj free?

Souj is free to download, with no in-app purchases.

### Is Inkday free?

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

### Do Souj or Inkday have ads?

Neither Souj nor Inkday shows ads.

### Which is updated more often, Souj or Inkday?

Souj ships an update every 9 days, and Inkday weekly. Most recently, Souj was updated on October 28, 2026 and Inkday on November 1, 2026.

---

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