# SDPROG vs Plier

The clearest difference is review sentiment: Plier at 100% against SDPROG's 25%. Plier also leads on ratings volume (15 vs 3). SDPROG's advantage is in-app purchases (none vs 2) and rating (5.0 vs 4.6). On price, update cadence, 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. SDPROG asks for nothing beyond the download.

SDPROG holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Plier has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 25% of SDPROG's written reviews are positive against 100% of Plier's, so the app with the better star average is not the one people write more warmly about.

SDPROG ships an update every 9 days, Plier weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | SDPROG | Plier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sdprog/id1020589879/reviews)** | [4.6 (15 ratings)](https://appshunter.io/ios/app/plier-car-maintenance-tracker/id6742336175/reviews) |
| Number of ratings | 3 | **15** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 85 MB | 54 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NexDiag Sp z o. o.](https://appshunter.io/developer/1316943345) | [Heap Labs LLC](https://appshunter.io/developer/840318089) |

## What reviewers say

### SDPROG

[App page](https://appshunter.io/ios/app/sdprog/id1020589879)

This advanced diagnostic tool allows for comprehensive vehicle system analysis, including emission filters and real-time parameter monitoring. It supports cars, motorcycles, ATVs, hybrids, and electric vehicles, offering detailed insights into engine and onboard modules.

**Highlights:** Comprehensive OBD2 and service diagnostics, Advanced emission filter analysis (DPF, FAP, GPF, PEF), Real-time vehicle parameter monitoring, DTC reading and clearing, Support for cars, motorcycles, ATVs, hybrids, and EVs

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

**In-app purchases:** none


### 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 SDPROG free?

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

### Is Plier free?

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

### Which has better reviews, SDPROG or Plier?

SDPROG is rated higher. SDPROG averages 5.0 out of 5 from 3 ratings, while Plier averages 4.6 from 15 ratings.

### Do SDPROG or Plier have ads?

Neither SDPROG nor Plier shows ads.

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

SDPROG ships an update every 9 days, and Plier weekly. Most recently, SDPROG was updated on October 24, 2026 and Plier on October 24, 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.*