# UK Postbox vs Agtrinsic

The clearest difference is update cadence: Agtrinsic at every 5 days against UK Postbox's monthly. UK Postbox's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

UK Postbox ships an update monthly, Agtrinsic every 5 days. The most recent releases landed on August 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | UK Postbox | Agtrinsic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/uk-postbox/id444085689/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 63.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 34 MB | 133 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [iPostalMail™](https://appshunter.io/developer/444085692) | [Intelinair](https://appshunter.io/developer/1442354522) |

## What reviewers say

### UK Postbox

[App page](https://appshunter.io/ios/app/uk-postbox/id444085689)

Manage your virtual mailbox and physical address from anywhere. View incoming mail, process items like scanning or forwarding, and send letters online. Requires a UK Postbox account.

**Highlights:** Dashboard overview, Manage inbox items, Send letters online, Account settings, Virtual address management, Mail forwarding

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

**In-app purchases:** none


### Agtrinsic

[App page](https://appshunter.io/ios/app/agtrinsic/id1664681960)

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

**In-app purchases:** none


## Frequently asked questions

### Is UK Postbox free?

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

### Is Agtrinsic free?

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

### Do UK Postbox or Agtrinsic have ads?

Neither UK Postbox nor Agtrinsic shows ads.

### Which is updated more often, UK Postbox or Agtrinsic?

UK Postbox ships an update monthly, and Agtrinsic every 5 days. Most recently, UK Postbox was updated on August 5, 2026 and Agtrinsic on September 9, 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.*