# Plier vs OBDII AI

The clearest difference is in-app purchases: OBDII AI at none against Plier's 2. OBDII AI also leads on iOS requirement (13.0 vs 15.0). Plier's advantage is update cadence (weekly vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Plier sells 2 in-app purchases, starting at $6.99 per 7 days. OBDII AI asks for nothing beyond the download.

Plier ships an update weekly, OBDII AI monthly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Plier | OBDII AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (15 ratings)](https://appshunter.io/ios/app/plier-car-maintenance-tracker/id6742336175/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 131 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Heap Labs LLC](https://appshunter.io/developer/840318089) | [Shenzhen Chaoyue Technology Development Co.,Ltd](https://appshunter.io/developer/1223781320) |

## What reviewers say

### Plier

[App page](https://appshunter.io/ios/app/plier-car-maintenance-tracker/id6742336175)

Transform your iPhone into an AI-powered car diagnostic tool. Connect to your vehicle via an OBD2 device to understand its health, diagnose issues, and estimate repair costs.

**Highlights:** AI-driven diagnostic reports, Real-time OBD2 data and graphs, Check engine light insights, Repair cost estimation, ELM327 Bluetooth compatibility, Troubleshoot engine codes

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $6.99 | per 7 days |
| Pro ( 1 Year ) | $49.99 | per year |


### OBDII AI

[App page](https://appshunter.io/ios/app/obdii-ai/id6742878024)

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

**In-app purchases:** none


## Frequently asked questions

### Is Plier free?

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

### Is OBDII AI free?

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

### Do Plier or OBDII AI have ads?

Neither Plier nor OBDII AI shows ads.

### Which is updated more often, Plier or OBDII AI?

Plier ships an update weekly, and OBDII AI monthly. Most recently, Plier was updated on October 24, 2026 and OBDII AI 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.*