# Flash Read Document vs Promni

The clearest difference is update cadence: Flash Read Document at daily against Promni's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Flash Read Document ships an update daily, Promni monthly. The most recent releases landed on December 25, 2025 and September 23, 2026 respectively.

## The numbers

| Metric | Flash Read Document | Promni |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Size | 30 MB | 122 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Changsha Youji Mutual Entertainment Network Information Co., Ltd.](https://appshunter.io/developer/1469325532) | [维林 李](https://appshunter.io/developer/1102738840) |

## What reviewers say

### Flash Read Document

[App page](https://appshunter.io/ios/app/flash-read-document/id6648775197)

**Features:** macOS Compatibility

**In-app purchases:** none


### Promni

[App page](https://appshunter.io/ios/app/promni/id6758014375)

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

**In-app purchases:** none


## Frequently asked questions

### Is Flash Read Document free?

Flash Read Document is free to download, with no in-app purchases.

### Is Promni free?

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

### Do Flash Read Document or Promni have ads?

Neither Flash Read Document nor Promni shows ads.

### Which is updated more often, Flash Read Document or Promni?

Flash Read Document ships an update daily, and Promni monthly. Most recently, Flash Read Document was updated on December 25, 2025 and Promni on September 23, 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.*