# sursector checking vs DiagAuto

The clearest difference is ads: sursector checking at none against DiagAuto's shown. sursector checking also leads on update cadence (every 3 weeks vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

sursector checking ships an update every 3 weeks, DiagAuto every 3 months. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | sursector checking | DiagAuto |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Size | 42 MB | 36 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [TOLTEC SA](https://appshunter.io/developer/1413786590) | [OBD2.com](https://appshunter.io/developer/1893349047) |

## What reviewers say

### sursector checking

[App page](https://appshunter.io/ios/app/sursector-checking/id1518186618)

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

**In-app purchases:** none


### DiagAuto

[App page](https://appshunter.io/ios/app/diagauto-diagnostic-obd2/id6762202759)

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

**In-app purchases:** none


## Frequently asked questions

### Is sursector checking free?

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

### Is DiagAuto free?

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

### Do sursector checking or DiagAuto have ads?

DiagAuto shows ads; sursector checking does not.

### Which is updated more often, sursector checking or DiagAuto?

sursector checking ships an update every 3 weeks, and DiagAuto every 3 months. Most recently, sursector checking was updated on November 3, 2026 and DiagAuto 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.*