# Event.A vs MD Audit OSA

Event.A and MD Audit OSA are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Event.A ships an update monthly, MD Audit OSA every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Event.A | MD Audit OSA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 69 MB | 28 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Mercury Development, LLC](https://appshunter.io/developer/305978040) | [ООО «МД Аудит»](https://appshunter.io/developer/1700663315) |

## What reviewers say

### Event.A

[App page](https://appshunter.io/ios/app/eventa/id6475043371)

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

**In-app purchases:** none


### MD Audit OSA

[App page](https://appshunter.io/ios/app/md-audit-osa/id6751530891)

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

**In-app purchases:** none


## Frequently asked questions

### Is Event.A free?

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

### Is MD Audit OSA free?

MD Audit OSA is free to download, with no in-app purchases.

### Do Event.A or MD Audit OSA have ads?

Neither Event.A nor MD Audit OSA shows ads.

### Which is updated more often, Event.A or MD Audit OSA?

Event.A ships an update monthly, and MD Audit OSA every 3 weeks. Most recently, Event.A was updated on October 24, 2026 and MD Audit OSA on October 28, 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.*