# infolio(影书) vs Kioku

The clearest difference is in-app purchases: Kioku at none against infolio(影书)'s 10. Kioku also leads on update cadence (every 2 days vs every 2 weeks). infolio(影书)'s advantage is device support (4 vs 1) and iOS requirement (15.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. infolio(影书) sells 10 in-app purchases, starting at $0.99 per 7 days. Kioku asks for nothing beyond the download.

infolio(影书) ships an update every 2 weeks, Kioku every 2 days. The most recent releases landed on October 21, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | infolio(影书) | Kioku |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 116 MB | 51 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [宁宁 权](https://appshunter.io/developer/1805766325) | [Kai Kang](https://appshunter.io/developer/1757164832) |

## What reviewers say

### infolio(影书)

[App page](https://appshunter.io/ios/app/infolio/id6744402057)

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 官方同步套餐体验版 | $0.99 | per 7 days |
| 套餐一(含20GB空间) | $2.99 | per month |
| 自定义同步源会员（1月） | $2.99 | per month |
| 套餐二(含200GB空间) | $9.99 | per month |
| 自定义同步源会员（1年） | $14.99 | per year |
| 套餐一(含20GB空间) | $22.49 | per year |
| 套餐三(含1TB空间) | $29.99 | per month |
| 套餐二(含200GB空间) | $87.99 | per year |
| 套餐四(含5TB空间) | $122.99 | per month |
| 套餐三(含1TB空间) | $299.00 | per year |


### Kioku

[App page](https://appshunter.io/ios/app/kioku-private-second-brain/id6762234661)

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

**In-app purchases:** none


## Frequently asked questions

### Is infolio(影书) free?

infolio(影书) is free to download, with in-app purchases available.

### Is Kioku free?

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

### Do infolio(影书) or Kioku have ads?

Neither infolio(影书) nor Kioku shows ads.

### Which is updated more often, infolio(影书) or Kioku?

infolio(影书) ships an update every 2 weeks, and Kioku every 2 days. Most recently, infolio(影书) was updated on October 21, 2026 and Kioku on September 29, 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.*