# DeffApp vs Plier

DeffApp and Plier are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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. DeffApp sells 1 in-app purchase, starting at $0.99 per month and Plier sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

DeffApp ships an update every 10 days, Plier weekly. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | DeffApp | Plier |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 66 MB | 54 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vitaliy Balayan](https://appshunter.io/developer/1592972448) | [Heap Labs LLC](https://appshunter.io/developer/840318089) |

## What reviewers say

### DeffApp

[App page](https://appshunter.io/ios/app/deffapp/id6741679635)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |


### 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 |


## Frequently asked questions

### Is DeffApp free?

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

### Is Plier free?

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

### Do DeffApp or Plier have ads?

Neither DeffApp nor Plier shows ads.

### Which is updated more often, DeffApp or Plier?

DeffApp ships an update every 10 days, and Plier weekly. Most recently, DeffApp was updated on September 30, 2026 and Plier on October 12, 2026.

---

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