# DualKeyIM vs FlashScan

The clearest difference is in-app purchases: DualKeyIM at none against FlashScan's 5. DualKeyIM also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. FlashScan sells 5 one-off in-app purchases. DualKeyIM asks for nothing beyond the download.

DualKeyIM ships an update every 5 days, FlashScan every 3 days. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | DualKeyIM | FlashScan |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 148 MB | 27 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [杰 任](https://appshunter.io/developer/6797053031) | [祖恒 廖](https://appshunter.io/developer/1800609484) |

## What reviewers say

### DualKeyIM

[App page](https://appshunter.io/ios/app/dualkeyim/id6797372095)

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

**In-app purchases:** none


### FlashScan

[App page](https://appshunter.io/ios/app/flashscan-simple-doc-scanner/id6800587966)

This app offers a privacy-focused way to scan documents, enhance images, and extract text. It automatically detects edges, corrects perspective, and offers various filters for clearer scans. Advanced features include redaction, PDF editing, and signature addition.

**Highlights:** Automatic edge detection and perspective correction, Image enhancement filters, Privacy redaction for sensitive information, Text recognition (OCR) for text extraction, PDF editing and watermarking, Signature and stamp addition, ID card scanning mode

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 120 credits | $1.99 | one-time |
| 180 credits | $2.99 | one-time |
| 500 credits | $4.99 | one-time |
| 1100 credits | $9.99 | one-time |
| 2000 credits | $14.99 | one-time |


## Frequently asked questions

### Is DualKeyIM free?

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

### Is FlashScan free?

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

### Do DualKeyIM or FlashScan have ads?

Neither DualKeyIM nor FlashScan shows ads.

### Which is updated more often, DualKeyIM or FlashScan?

DualKeyIM ships an update every 5 days, and FlashScan every 3 days. Most recently, DualKeyIM was updated on October 25, 2026 and FlashScan on October 26, 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.*