# Bastion HMO vs Avon Flex

The clearest difference is iOS requirement: Avon Flex at 13.0 against Bastion HMO'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.

Bastion HMO ships an update every 3 months, Avon Flex every 2 months. The most recent releases landed on September 15, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Bastion HMO | Avon Flex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 47 MB | 84 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Bastion Health Limited](https://appshunter.io/developer/1571646306) | [Avon Health Care Limited](https://appshunter.io/developer/1617600738) |

## What reviewers say

### Bastion HMO

[App page](https://appshunter.io/ios/app/bastion-hmo/id1571646304)

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

**In-app purchases:** none


### Avon Flex

[App page](https://appshunter.io/ios/app/avon-flex/id1617600736)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bastion HMO free?

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

### Is Avon Flex free?

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

### Do Bastion HMO or Avon Flex have ads?

Neither Bastion HMO nor Avon Flex shows ads.

### Which is updated more often, Bastion HMO or Avon Flex?

Bastion HMO ships an update every 3 months, and Avon Flex every 2 months. Most recently, Bastion HMO was updated on September 15, 2026 and Avon Flex on September 8, 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.*