# Strontium Hub vs TonfotosSync

The clearest difference is iOS requirement: Strontium Hub at 7.0 against TonfotosSync's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Strontium Hub ships an update every 2 weeks, TonfotosSync every 4 weeks. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Strontium Hub | TonfotosSync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Size | 37 MB | 42 MB |
| Requires iOS | **7.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trend Electronics co., Ltd.](https://appshunter.io/developer/548589075) | [Andrey Isaev](https://appshunter.io/developer/1891719133) |

## What reviewers say

### Strontium Hub

[App page](https://appshunter.io/ios/app/strontium-hub/id1024960611)

**Features:** macOS Compatibility

**In-app purchases:** none


### TonfotosSync

[App page](https://appshunter.io/ios/app/tonfotossync/id6761839014)

**In-app purchases:** none


## Frequently asked questions

### Is Strontium Hub free?

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

### Is TonfotosSync free?

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

### Do Strontium Hub or TonfotosSync have ads?

Neither Strontium Hub nor TonfotosSync shows ads.

### Which is updated more often, Strontium Hub or TonfotosSync?

Strontium Hub ships an update every 2 weeks, and TonfotosSync every 4 weeks. Most recently, Strontium Hub was updated on October 2, 2026 and TonfotosSync on October 14, 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.*