# infolio(影书) vs Duoflow

The clearest difference is update cadence: Duoflow at every 3 days against infolio(影书)'s every 2 weeks. infolio(影书)'s advantage is device support (4 vs 1) and iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases 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 and Duoflow sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

infolio(影书) ships an update every 2 weeks, Duoflow every 3 days. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | infolio(影书) | Duoflow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 116 MB | 72 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) | [Tianjin Ruikai Technology Co., Ltd](https://appshunter.io/developer/1766739205) |

## 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 |


### Duoflow

[App page](https://appshunter.io/ios/app/duoflow/id6767079360)

Record notes, to-dos, and diaries through a chat interface. Customize chat bubbles for visual organization and easily manage different content types. Syncs seamlessly across Apple devices via iCloud.

**Highlights:** Chat-based recording, Customizable chat bubbles, Multiple message types (text, image, video, audio, location), Multiple conversation groups, iCloud synchronization, Cross-device continuity

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $0.99 | per month |
| 年度会员 | $4.99 | per year |
| 永久会员 | $6.99 | one-time |


## Frequently asked questions

### Is infolio(影书) free?

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

### Is Duoflow free?

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

### Do infolio(影书) or Duoflow have ads?

Neither infolio(影书) nor Duoflow shows ads.

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

infolio(影书) ships an update every 2 weeks, and Duoflow every 3 days. Most recently, infolio(影书) was updated on October 4, 2026 and Duoflow on October 1, 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.*