# 极速扫描 vs 倒数 · 纪念日

The clearest difference is in-app purchases: 极速扫描 at none against 倒数 · 纪念日's 1. 倒数 · 纪念日's advantage is iOS requirement (10.0 vs 12.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 倒数 · 纪念日 sells 1 in-app purchase, starting at $52.99 per year. 极速扫描 asks for nothing beyond the download.

极速扫描 ships an update fortnightly, 倒数 · 纪念日 every 3 weeks. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 极速扫描 | 倒数 · 纪念日 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/pdf/id1519214076/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 36 MB | 40 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [浩杰 姬](https://appshunter.io/developer/1514456091) | [Enle Inc.](https://appshunter.io/developer/1516608365) |

## What reviewers say

### 极速扫描

[App page](https://appshunter.io/ios/app/pdf/id1519214076)

This tool uses advanced image recognition to extract editable text from images, PDFs, and web images. It offers fast, accurate scanning with options for copying text, reviewing history, and customizable display modes. All features are available for free.

**Highlights:** Image and PDF text recognition, Batch text extraction, Editable and copyable text, Scan history, Dark and light modes, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### 倒数 · 纪念日

[App page](https://appshunter.io/ios/app/id1524733387)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 倒数纪念日连续包年会员 | $52.99 | per year |


## Frequently asked questions

### Is 极速扫描 free?

极速扫描 is free to download, with no in-app purchases.

### Is 倒数 · 纪念日 free?

倒数 · 纪念日 is free to download, with in-app purchases available.

### Do 极速扫描 or 倒数 · 纪念日 have ads?

Both 极速扫描 and 倒数 · 纪念日 show ads.

### Which is updated more often, 极速扫描 or 倒数 · 纪念日?

极速扫描 ships an update fortnightly, and 倒数 · 纪念日 every 3 weeks. Most recently, 极速扫描 was updated on October 15, 2026 and 倒数 · 纪念日 on October 27, 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.*