# USB Disk vs GEOCALC SIRGAS

The clearest difference is rating: USB Disk at 4.6 against GEOCALC SIRGAS's 4.0. USB Disk also leads on update cadence (every 2 months vs every 27 months) and ratings volume (161 vs 1). GEOCALC SIRGAS's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price and device support there is nothing between them.

USB Disk costs $0.99 and GEOCALC SIRGAS $0.99 up front. USB Disk sells 10 in-app purchases, starting at $4.99 per month. GEOCALC SIRGAS asks for nothing beyond the download.

USB Disk holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: USB Disk has 161 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 71% of USB Disk's written reviews are positive against 100% of GEOCALC SIRGAS's, so the app with the better star average is not the one people write more warmly about.

USB Disk ships an update every 2 months, GEOCALC SIRGAS every 27 months. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | USB Disk | GEOCALC SIRGAS |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.6 (161 ratings)](https://appshunter.io/ios/app/usb-disk/id385275533/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/geocalc-sirgas/id1119290378/reviews) |
| Number of ratings | **161** | 1 |
| Positive reviews | 70.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 27 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 200 MB | 19 MB |
| Requires iOS | 16.0 | **10.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Imesart S.a.r.l.](https://appshunter.io/developer/290160983) | [Rodolfo Torres](https://appshunter.io/developer/596241193) |

## What reviewers say

### USB Disk

[App page](https://appshunter.io/ios/app/usb-disk/id385275533)

Manage and view documents on your iPhone or iPad with this intuitive file manager. Access cloud storage, open various file types, and transfer files via iTunes. Advanced features like photo library access and PDF annotation are available via subscription.

**Highlights:** Cloud storage integration (Dropbox, Google Drive, OneDrive, Box), Built-in document viewer for various file types, File transfer via iTunes, Create and open zip files, Swipe navigation and file previews, Email documents and download attachments

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USB Disk Pro Monthly | $4.99 | per month |
| Audio Player + | $0.99 | one-time |
| Zip files support | $0.99 | one-time |
| Dropbox access | $0.99 | one-time |
| Lock code | $0.99 | one-time |
| Text editor | $0.99 | one-time |
| Evernote access | $0.99 | one-time |
| Google Drive access | $0.99 | one-time |
| OneDrive access | $0.99 | one-time |
| WebDAV access | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient file management
- 💡 Useful for storing and accessing documents
- 👍 Convenient for transferring files between devices

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 💰 Expensive paid features
- 🔒 Concerns about security and privacy
- 🤔 Misleading app description

**Reported bugs**

- Inability to open certain file types
- Compatibility issues with newer iOS versions
- Syncing problems between devices

**Requested features**

- Support for more file types
- Improved integration with cloud storage services
- Ability to edit and annotate files
- Better organization and folder management


### GEOCALC SIRGAS

[App page](https://appshunter.io/ios/app/geocalc-sirgas/id1119290378)

This app converts geographic references to various coordinate systems, including Elipsoidal, Gauss-Krüger, Geocentric, and Plane Cartesian, specifically for the Colombian system. It's a specialized tool for surveying and geodesy professionals.

**Highlights:** Geographic reference conversion, Elipsoidal coordinates, Gauss-Krüger coordinates, Geocentric coordinates, Plane Cartesian coordinates, Colombian system support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is USB Disk free?

USB Disk costs $0.99, and also offers in-app purchases.

### Is GEOCALC SIRGAS free?

GEOCALC SIRGAS costs $0.99, with no in-app purchases.

### Which has better reviews, USB Disk or GEOCALC SIRGAS?

USB Disk is rated higher. USB Disk averages 4.6 out of 5 from 161 ratings, while GEOCALC SIRGAS averages 4.0 from 1 ratings.

### Do USB Disk or GEOCALC SIRGAS have ads?

USB Disk shows ads; GEOCALC SIRGAS does not.

### Which is updated more often, USB Disk or GEOCALC SIRGAS?

USB Disk ships an update every 2 months, and GEOCALC SIRGAS every 27 months. Most recently, USB Disk was updated on October 29, 2026 and GEOCALC SIRGAS on October 7, 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.*