# iDUO Drive vs OTG Flash Pro

The clearest difference is update cadence: OTG Flash Pro at every 10 days against iDUO Drive's every 6 weeks. iDUO Drive's advantage is iOS requirement (9.0 vs 14.0). 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.

iDUO Drive ships an update every 6 weeks, OTG Flash Pro every 10 days. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | iDUO Drive | OTG Flash Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (31 ratings)](https://appshunter.io/ios/app/iduo-drive/id1144071891/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 6.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 39 MB | 136 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Super Storage Technology Corp.](https://appshunter.io/developer/718838056) | [裕雨 程](https://appshunter.io/developer/1079877476) |

## What reviewers say

### iDUO Drive

[App page](https://appshunter.io/ios/app/iduo-drive/id1144071891)

Easily manage all your files on iDevices and transfer them between devices and platforms. Back up contacts and photos, and access cloud storage like iCloud, Dropbox, and Google Drive.

**Highlights:** Manage files on iDUO Lightning drives, Backup contacts and camera roll, Connect with iCloud, Dropbox, Google Drive, Browse and manage cloud files, Password protect Lightning drives

**Features:** macOS Compatibility

**In-app purchases:** none


### OTG Flash Pro

[App page](https://appshunter.io/ios/app/otg-flash-pro/id6752880818)

**In-app purchases:** none


## Frequently asked questions

### Is iDUO Drive free?

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

### Is OTG Flash Pro free?

OTG Flash Pro is free to download, with no in-app purchases.

### Do iDUO Drive or OTG Flash Pro have ads?

Neither iDUO Drive nor OTG Flash Pro shows ads.

### Which is updated more often, iDUO Drive or OTG Flash Pro?

iDUO Drive ships an update every 6 weeks, and OTG Flash Pro every 10 days. Most recently, iDUO Drive was updated on November 2, 2026 and OTG Flash Pro on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*