# OBDMap vs AutoChemai

The clearest difference is in-app purchases: OBDMap at none against AutoChemai's 4. AutoChemai's advantage is update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AutoChemai sells 4 in-app purchases, starting at $9.99 per month. OBDMap asks for nothing beyond the download.

OBDMap ships an update every 2 months, AutoChemai every 2 days. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | OBDMap | AutoChemai |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 70 MB | 3 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chiptronic Eletronica do Brasil Ltda](https://appshunter.io/developer/1098176482) | [KUO WEI Tseng](https://appshunter.io/developer/6802335476) |

## What reviewers say

### OBDMap

[App page](https://appshunter.io/ios/app/obdmap/id1179489593)

This professional automotive tool offers comprehensive solutions for immobilizer systems, enabling key and remote programming, password reading, and module matching. It's designed for automotive professionals, from beginners to experts, providing quick and secure services for a wide range of vehicles.

**Highlights:** Automotive key coding, Immobilizer solutions, Key and remote programming, Password reading, Module matching, Intuitive interface, Expandable memory

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

**In-app purchases:** none


### AutoChemai

[App page](https://appshunter.io/ios/app/autochemai-obd2-car-check/id6810481531)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard – Monthly | $9.99 | per month |
| Pro – Monthly | $49.99 | per month |
| Standard – Yearly | $99.99 | per year |
| Pro – Yearly | $499.99 | per year |


## Frequently asked questions

### Is OBDMap free?

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

### Is AutoChemai free?

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

### Do OBDMap or AutoChemai have ads?

Neither OBDMap nor AutoChemai shows ads.

### Which is updated more often, OBDMap or AutoChemai?

OBDMap ships an update every 2 months, and AutoChemai every 2 days. Most recently, OBDMap was updated on October 24, 2026 and AutoChemai on October 11, 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.*