# Strontium vs mcr i

The clearest difference is in-app purchases: mcr i at none against Strontium's 2. Strontium's advantage is update cadence (every 5 months vs every 15 months) and iOS requirement (8.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Strontium sells 2 one-off in-app purchases. mcr i asks for nothing beyond the download.

Strontium ships an update every 5 months, mcr i every 15 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Strontium | mcr i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (4 ratings)](https://appshunter.io/ios/app/strontium/id1050123100/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 10.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 15 months |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 44 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [i-FlashDrive Inc.](https://appshunter.io/developer/1387757454) | [Decharwath Radeechartphirom](https://appshunter.io/developer/1706624889) |

## What reviewers say

### Strontium

[App page](https://appshunter.io/ios/app/strontium/id1050123100)

Easily manage and transfer photos, music, videos, and files between your Apple devices. Offers secure storage, direct media playback, and backup options for contacts and your camera roll.

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

**In-app purchases (2)**

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


### mcr i

[App page](https://appshunter.io/ios/app/mcr-i-boost/id6465576234)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Strontium free?

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

### Is mcr i free?

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

### Do Strontium or mcr i have ads?

Neither Strontium nor mcr i shows ads.

### Which is updated more often, Strontium or mcr i?

Strontium ships an update every 5 months, and mcr i every 15 months. Most recently, Strontium was updated on October 24, 2026 and mcr i on October 25, 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.*