# InvoiceGen vs EventFlow.OS

The clearest difference is in-app purchases: EventFlow.OS at none against InvoiceGen's 2. EventFlow.OS also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price and ads there is nothing between them.

Both are free to download. InvoiceGen sells 2 in-app purchases, starting at $9.99 per 7 days. EventFlow.OS asks for nothing beyond the download.

## The numbers

| Metric | InvoiceGen | EventFlow.OS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eventflowos/id6758860337/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Monetization | — | Free |
| Size | 7 MB | 191 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniil Mukashev](https://appshunter.io/developer/1833839105) | [samuel talarico](https://appshunter.io/developer/1875329949) |

## What reviewers say

### InvoiceGen

[App page](https://appshunter.io/ios/app/invoicegen-invoice-maker/id6758279351)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InvoiceGen Pro Weekly | $9.99 | per 7 days |
| InvoiceGen Pro Yearly | $99.99 | per year |


### EventFlow.OS

[App page](https://appshunter.io/ios/app/eventflowos/id6758860337)

Manage event check-ins and attendance efficiently with real-time tracking and live analytics. This app simplifies on-site operations for various events, offering easy attendee management and report export from a single interface.

**Highlights:** Real-time attendee check-in, Attendance tracking, Live analytics monitoring, Event creation and management, Report export, On-site operations management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InvoiceGen free?

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

### Is EventFlow.OS free?

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

### Do InvoiceGen or EventFlow.OS have ads?

Neither InvoiceGen nor EventFlow.OS shows ads.

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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.*