# X100D vs CAR OBD

The clearest difference is in-app purchases: X100D at none against CAR OBD's 5. X100D also leads on iOS requirement (8.0 vs 13). CAR OBD's advantage is update cadence (every 6 weeks vs every 10 months). On price, ads and device support there is nothing between them.

Both are free to download. CAR OBD sells 5 one-off in-app purchases. X100D asks for nothing beyond the download.

X100D ships an update every 10 months, CAR OBD every 6 weeks. The most recent releases landed on October 11, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | X100D | CAR OBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/car-obd/id6470771313/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 15 MB |
| Requires iOS | **8.0** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [翔宇 金](https://appshunter.io/developer/528881861) | [Dongguan Shendu Research Intelligent Technology Co., Ltd.](https://appshunter.io/developer/1827187525) |

## What reviewers say

### X100D

[App page](https://appshunter.io/ios/app/x100d/id1164397066)

**Features:** macOS Compatibility

**In-app purchases:** none


### CAR OBD

[App page](https://appshunter.io/ios/app/car-obd/id6470771313)

This utility app helps users manage car keys by facilitating the matching of existing keys and the addition of new ones. It supports both single key additions and batch processing for multiple keys.

**Highlights:** Match car keys, Add single car key, Batch add multiple keys, Supports iPhone and iPad

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OBD number recharge One | $3.00 | one-time |
| OBD number recharge Two | $6.00 | one-time |
| OBD number recharge three | $9.00 | one-time |
| OBD number recharge four | $12.00 | one-time |
| OBD number recharge five | $15.00 | one-time |


## Frequently asked questions

### Is X100D free?

X100D is free to download, with no in-app purchases.

### Is CAR OBD free?

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

### Do X100D or CAR OBD have ads?

Neither X100D nor CAR OBD shows ads.

### Which is updated more often, X100D or CAR OBD?

X100D ships an update every 10 months, and CAR OBD every 6 weeks. Most recently, X100D was updated on October 11, 2026 and CAR OBD on September 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*