# SB Auto vs U

The clearest difference is in-app purchases: SB Auto at none against U's 3. U's advantage is update cadence (every 9 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. U sells 3 in-app purchases, starting at $2.99 per 7 days. SB Auto asks for nothing beyond the download.

SB Auto ships an update every 3 months, U every 9 days. The most recent releases landed on September 9, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | SB Auto | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/u-bacnet/id6751057296/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 56 MB | 31 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SmartBuild Automation Private Limited](https://appshunter.io/developer/1594176863) | [IMMA MOLINA](https://appshunter.io/developer/1833286076) |

## What reviewers say

### SB Auto

[App page](https://appshunter.io/ios/app/sb-auto/id6478853565)

**Features:** macOS Compatibility

**In-app purchases:** none


### U

[App page](https://appshunter.io/ios/app/u-bacnet/id6751057296)

This tool helps building automation professionals discover and interact with BACnet/IP devices on their local network. It allows users to scan for devices, view objects, and read properties through an intuitive interface.

**Highlights:** Automatic BACnet/IP device scanning, View and filter discovered devices, Browse device objects, Read device properties, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| U-BACnet Premium | $2.99 | per 7 days |
| U-BACnet Premium | $9.99 | per month |
| U-BACnet Premium | $99.99 | per year |


## Frequently asked questions

### Is SB Auto free?

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

### Is U free?

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

### Do SB Auto or U have ads?

Neither SB Auto nor U shows ads.

### Which is updated more often, SB Auto or U?

SB Auto ships an update every 3 months, and U every 9 days. Most recently, SB Auto was updated on September 9, 2026 and U on June 5, 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.*