# Theresa vs MyNAS Sync

The clearest difference is in-app purchases: Theresa at none against MyNAS Sync's 1. Theresa also leads on ads (none vs shown). MyNAS Sync's advantage is update cadence (every 2 days vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. MyNAS Sync sells 1 one-off in-app purchase. Theresa asks for nothing beyond the download.

Theresa ships an update fortnightly, MyNAS Sync every 2 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Theresa | MyNAS Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 10 MB | 37 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QUIS AG](https://appshunter.io/developer/1626966150) | [Fatih Bilgin](https://appshunter.io/developer/6787235467) |

## What reviewers say

### Theresa

[App page](https://appshunter.io/ios/app/theresa/id6736680819)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MyNAS Sync

[App page](https://appshunter.io/ios/app/mynas-sync/id6813691444)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MyNAS Sync Premium | $1.99 | one-time |


## Frequently asked questions

### Is Theresa free?

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

### Is MyNAS Sync free?

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

### Do Theresa or MyNAS Sync have ads?

MyNAS Sync shows ads; Theresa does not.

### Which is updated more often, Theresa or MyNAS Sync?

Theresa ships an update fortnightly, and MyNAS Sync every 2 days. Most recently, Theresa was updated on November 8, 2026 and MyNAS Sync on October 31, 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.*