# Badass Proof Calc vs OpenOBD

Badass Proof Calc and OpenOBD are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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.

## The numbers

| Metric | Badass Proof Calc | OpenOBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/openobd-live-car-data/id6780283561/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | — | Free |
| Size | 37 MB | 36 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [RONALD JAMES STONE](https://appshunter.io/developer/1896763584) | [Osman Cengeri](https://appshunter.io/developer/1807592099) |

## What reviewers say

### Badass Proof Calc

[App page](https://appshunter.io/ios/app/badass-proof-calc/id6771781310)

**Features:** macOS Compatibility

**In-app purchases:** none


### OpenOBD

[App page](https://appshunter.io/ios/app/openobd-live-car-data/id6780283561)

Transform your iPhone into a real-time car dashboard. Connect an OBD2 adapter to monitor live engine data, track your trips with GPS, and diagnose fault codes with clear explanations. Explore all features in demo mode without hardware.

**Highlights:** Live engine data monitoring, Real-time speed, RPM, temperature gauges, Trip logging with GPS mapping, Read and clear diagnostic trouble codes (DTCs), Vehicle information display, Demo mode for exploration

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

**In-app purchases:** none


## Frequently asked questions

### Is Badass Proof Calc free?

Badass Proof Calc is free to download, with no in-app purchases.

### Is OpenOBD free?

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

### Do Badass Proof Calc or OpenOBD have ads?

Neither Badass Proof Calc nor OpenOBD 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.*