# SmartO vs May10 Messenger

The clearest difference is iOS requirement: SmartO at 11.0 against May10 Messenger's 16.0. 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.

SmartO ships an update every 4 months, May10 Messenger every 3 months. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SmartO | May10 Messenger |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 52 MB | 107 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hong Kong Airlines Ltd.](https://appshunter.io/developer/394858560) | [VDX DIGITAL TRANSFORMATION SOLUTIONS COMPANY LIMITED](https://appshunter.io/developer/1846532328) |

## What reviewers say

### SmartO

[App page](https://appshunter.io/ios/app/smarto/id546603452)

This app offers a comprehensive suite of mobile office services for airline customers. It includes document management, an office assistant with communication tools, staff-related functions like payroll and leave records, and travel-related features such as flight search and status updates.

**Highlights:** Document approval and tracking, Contact list and chat, Leave and duty trip management, Payroll and reimbursement, Flight search and status

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

**In-app purchases:** none


### May10 Messenger

[App page](https://appshunter.io/ios/app/may10-messenger/id6758656989)

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

**In-app purchases:** none


## Frequently asked questions

### Is SmartO free?

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

### Is May10 Messenger free?

May10 Messenger is free to download, with no in-app purchases.

### Do SmartO or May10 Messenger have ads?

Neither SmartO nor May10 Messenger shows ads.

### Which is updated more often, SmartO or May10 Messenger?

SmartO ships an update every 4 months, and May10 Messenger every 3 months. Most recently, SmartO was updated on October 10, 2026 and May10 Messenger 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.*