# BizzStream vs IRS Attero

The clearest difference is iOS requirement: BizzStream at 11.0 against IRS Attero's 17.0. 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.

BizzStream ships an update every 5 weeks, IRS Attero every 3 weeks. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | BizzStream | IRS Attero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 29 MB | 19 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maxedy](https://appshunter.io/developer/856893040) | [Capptions B.V.](https://appshunter.io/developer/540382734) |

## What reviewers say

### BizzStream

[App page](https://appshunter.io/ios/app/bizzstream/id1055758757)

**Features:** macOS Compatibility

**In-app purchases:** none


### IRS Attero

[App page](https://appshunter.io/ios/app/irs-attero/id1456128575)

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

**In-app purchases:** none


## Frequently asked questions

### Is BizzStream free?

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

### Is IRS Attero free?

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

### Do BizzStream or IRS Attero have ads?

Neither BizzStream nor IRS Attero shows ads.

### Which is updated more often, BizzStream or IRS Attero?

BizzStream ships an update every 5 weeks, and IRS Attero every 3 weeks. Most recently, BizzStream was updated on September 18, 2026 and IRS Attero on September 17, 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.*