# AlphaTech Plotter vs OBD2 Car Scanner ELM327

The clearest difference is in-app purchases: AlphaTech Plotter at none against OBD2 Car Scanner ELM327's 2. AlphaTech Plotter also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.0). OBD2 Car Scanner ELM327's advantage is update cadence (every 6 days vs every 6 weeks). On price and ads there is nothing between them.

Both are free to download. OBD2 Car Scanner ELM327 sells 2 in-app purchases, starting at $24.99 per month. AlphaTech Plotter asks for nothing beyond the download.

AlphaTech Plotter ships an update every 6 weeks, OBD2 Car Scanner ELM327 every 6 days. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | AlphaTech Plotter | OBD2 Car Scanner ELM327 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/obd2-car-scanner-elm327-cavox/id6787960880/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 24 MB | 36 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Elchin Isayev](https://appshunter.io/developer/1857252479) | [Larisa Kozlova](https://appshunter.io/developer/1895005449) |

## What reviewers say

### AlphaTech Plotter

[App page](https://appshunter.io/ios/app/alphatech-plotter/id6755915016)

**Features:** macOS Compatibility

**In-app purchases:** none


### OBD2 Car Scanner ELM327

[App page](https://appshunter.io/ios/app/obd2-car-scanner-elm327-cavox/id6787960880)

Decode your car's check engine light with AI. Get plain-language explanations of trouble codes, likely causes, and urgency. Monitor live sensor data and track your car's history.

**Highlights:** Plain-language verdict for trouble codes, AI explanations of fault codes, Live sensor monitoring (RPM, temp, etc.), Car diagnostic history tracking, Support for multiple vehicles, Demo mode for pre-purchase testing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cavox Premium Monthly | $24.99 | per month |
| Cavox Premium Yearly | $99.99 | per year |


## Frequently asked questions

### Is AlphaTech Plotter free?

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

### Is OBD2 Car Scanner ELM327 free?

OBD2 Car Scanner ELM327 is free to download, with in-app purchases available.

### Do AlphaTech Plotter or OBD2 Car Scanner ELM327 have ads?

Neither AlphaTech Plotter nor OBD2 Car Scanner ELM327 shows ads.

### Which is updated more often, AlphaTech Plotter or OBD2 Car Scanner ELM327?

AlphaTech Plotter ships an update every 6 weeks, and OBD2 Car Scanner ELM327 every 6 days. Most recently, AlphaTech Plotter was updated on October 4, 2026 and OBD2 Car Scanner ELM327 on October 9, 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.*