# Strontium

> File management and transfer app for iOS devices with secure storage. (iPhone/iPad app by i-FlashDrive Inc..)

- Source: https://appshunter.io/ios/app/strontium/id1050123100 (this page in markdown: same URL + `.md`)
- Developer: [i-FlashDrive Inc.](https://appshunter.io/developer/1387757454)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 1.80/5 from 4 App Store ratings · 38 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 132 MB
- Languages: American English, Arabic, Czech, Danish, Dutch, French (France), German (Germany), Greek, Hebrew, Hungarian and 14 more
- Released: 2015-11-10
- Data updated: 2026-08-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/strontium/id1050123100/reviews.md

## What is Strontium?

Strontium app is the best way to manage all your photos, music, videos and files to or between your iPhone, iPad and iPod.

Features and Benefits: 
- Secured data storage 
- Direct playback of videos and songs
- Backup and restore contacts and camera roll
- Lightning transfer between iPhone, iPad and iPod 
- Free app for auto file management and security  

Compatible with Strontium hardware: 
- Strontium iOS Lightning Card Reader

Supported File Formats:
Document: Pages, Numbers, Keynote, doc, docx, xls, xlsx, ppt, pptx, rtf, txt, html, pdf
Image: jpg, png, bmp, gif, tif, tiff, ico, xbm, cur
Audio: mp3, aac, aif, aiff, wav, m4a, caf
Video: mp4, mov, m4v (without DRM), mkv, avi, flv, rm, rmvb, wmv, vob, 3gp
Other: zip (In-App Purchase required)

To experience more of our memory products visit www.strontium.biz

## Key features

- Secure data storage
- Direct media playback
- Backup and restore contacts
- Lightning transfer between devices
- Auto file management
- Supports numerous file formats

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Calendar Backup | Free | one-time |
| Zip/unzip files support | $0.99 | one-time |


## Recent user reviews (10 of 38)

All indexed reviews: https://appshunter.io/ios/app/strontium/id1050123100/reviews.md

### 3/5 — Not working

*2026-06-06, version 1.1.0*

Hi, this app no longer works on iso 26! Can you update the app pls with fix??

### 5/5 — Nice app …

*2025-07-02, version 1.1.0*

Hope u guys can update to latest 
iso .. I love this app……

### 1/5 — Inconsistent and non working App

*2023-09-18, version 1.1.0*

The app is so very inconsistent in how it works and now, it doesn’t even recognise the (my 64gb) flash drive on iOS 16(+) anymore. Pathetic!

### 1/5 — Product Authenticator

*2021-10-30, version 1.1.0*

Brought thru amazon able to use on iphone 11 pro max after upgrade phone with 12phone 12 pro max keep saying product not genuine. Who the hell keep the packaging after open. 🤦🏻‍♂️

### 4/5 — Integration with Files in iOS

*2021-06-23, version 1.1.0*

The app is really good as it gives me that extra capacity. It would be great though if this app could be integrated with the new Files app introduced in ios 11 or later.

### 1/5 — Failures

*2020-11-13, version 1.1.0*

I bought it with 128GB micro SD few years ago. It work very well before. But failed for copy since year ago...and can’t use the original 128GB for copy...😓😓😓...just can copy with 16GB slow speed micro SD Card now! How can I do...? My iPhoneX is 256GB...how many time for copy and back up for once?

### 1/5 — Crashes in iOS 14.0.1 with 128GB card

*2020-10-21, version 1.1.0*

App was functional despite niggling issues, but now crashes every single time I try opening a 128 GB microSD card with iDrive. Please fix!

### 1/5 — This app retired, look for photofast app

*2020-10-03, version 1.1.0*

This app is dead, no wonder it doesn’t work. What a waste of time!! Downloaded the photofast app and that works for the external usb flashdrive.

### 1/5 — App Crash

*2019-12-18, version 1.1.0*

I am wondering if this app is ever tested.. the moment i select files to copy it crashes. I am using iOS 13.3. I hope developers of this app will release the patch for the app crash asap otherwise this money is waste for us.

### 5/5 — Good

*2019-11-05, version 1.1.0*

The 64GB & 128GB iDrive I bought work well on my iPhones. Able to transfer photos to and fro between iDrive and iPhones.

## Frequently asked questions about Strontium

### What is Strontium used for?

Strontium is used to manage and transfer photos, music, videos, and files between your iPhone, iPad, and iPod. It also provides secured data storage and backup options for contacts and your camera roll.

### Does Strontium have ads?

No, Strontium does not contain advertisements. It is a free app for auto file management and security.

### What file formats does Strontium support?

Strontium supports a wide range of file formats including documents (PDF, DOCX, XLSX), images (JPG, PNG), audio (MP3, AAC), and video (MP4, MOV, AVI). An in-app purchase is required to support ZIP files.

### What devices is Strontium compatible with?

Strontium is compatible with iPhone, iPad, and iPod devices. It also works with Strontium iOS Lightning Card Reader hardware.

### How often is Strontium updated?

The latest version of Strontium is 1.1.0, which was last updated on October 3, 2017. The app was initially released on November 10, 2015.

### What is the age rating for Strontium?

Strontium has an age rating of 4+, making it suitable for a wide range of users.

### What is the user rating for Strontium?

Strontium has a user rating of 1.8 stars based on 4 ratings. This indicates a generally low user satisfaction.

### Can I play videos and music directly from Strontium?

Yes, Strontium allows for direct playback of videos and songs, so you can enjoy your media without needing to transfer it first.

## Version history (last 5 releases)

### 1.1.0 — 2017-10-03

This app has been updated by Apple to display the Apple Watch app icon.

Fixed: iOS 11 related UI bugs

### 1.0.4 — 2016-09-21

Fixed: Video files cannot play in iOS 10
Fixed: File time stamp display bug in exFAT File System
Updated: Voice Recorder UI

### 1.0.3 — 2016-05-01

Fixed: FAT32 File System related bugs
Fixed: "Clear Cache Data" may cause app crash
Fixed: App crash when backup multiple slow-motion videos
Updated: Video player codec upgrade to improve file compatibility
Added: Peek and Pop for iPhone 6s & 6s Plus

### 1.0.2 — 2016-04-21

UI update.

### 1.0.1 — 2016-03-25

UI update.

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## More apps by i-FlashDrive Inc.

- [PhotoFast LIFE](https://appshunter.io/ios/app/photofast-life/id440631990)
- [PhotoDrive+](https://appshunter.io/ios/app/photodrive-plus/id1052664576)
- [Call Recorder+](https://appshunter.io/ios/app/call-recorder-plus/id1053840533)
- [PhotoCube AI](https://appshunter.io/ios/app/photocube-ai/id1387757455)
- [MOMAX Backup](https://appshunter.io/ios/app/momax-backup/id1446400473)

All apps by i-FlashDrive Inc.: https://appshunter.io/developer/1387757454

## Related topics

[stbox pro](https://appshunter.io/ios/topics/stbox-pro)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-09.*