# DPFTrac DPF Tracking System vs Karmak Mobile Service

DPFTrac DPF Tracking System and Karmak Mobile Service both sit at 4.4 stars, but that hides the real split: 100% of DPFTrac DPF Tracking System's written reviews are positive against 0% of Karmak Mobile Service's. DPFTrac DPF Tracking System also leads on iOS requirement (13.0 vs 16.0). Karmak Mobile Service's advantage is update cadence (every 3 weeks vs every 2 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.4 for DPFTrac DPF Tracking System against 4.3 for Karmak Mobile Service. Both are backed by a comparable volume of ratings — 7 and 9 respectively. Written reviews are what separate them: 100% of DPFTrac DPF Tracking System's written reviews are positive against 0% of Karmak Mobile Service's.

DPFTrac DPF Tracking System ships an update every 2 months, Karmak Mobile Service every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | DPFTrac DPF Tracking System | Karmak Mobile Service |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/dpftrac-dpf-tracking-system/id1313489492/reviews)** | [4.3 (9 ratings)](https://appshunter.io/ios/app/karmak-mobile-service/id6449002191/reviews) |
| Number of ratings | 7 | **9** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 33 MB | 201 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [21stCenturyArtists.com](https://appshunter.io/developer/441444531) | [Karmak, Inc.](https://appshunter.io/developer/396532666) |

## What reviewers say

### DPFTrac DPF Tracking System

[App page](https://appshunter.io/ios/app/dpftrac-dpf-tracking-system/id1313489492)

Streamline DPF cleaning with industry-standard procedures and a comprehensive, frequently updated database of part numbers, pressure ranges, and filter dimensions. Automate filter tagging and generate digital worksheets for compliance and forecasting.

**Highlights:** Step-by-step DPF cleaning procedures, Extensive, updated DPF part number database, Certified pressure ranges and filter dimensions, Automatic filter tagging (red, orange, green), Digital PDF worksheets and compliance documentation, Service and fleet maintenance forecasting

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

**In-app purchases:** none


### Karmak Mobile Service

[App page](https://appshunter.io/ios/app/karmak-mobile-service/id6449002191)

Empower your service teams with mobile access to your business's core service management system. Create, edit, and manage repair orders, track time on tasks, and utilize VIN scanning for enhanced efficiency, all without needing a VPN.

**Highlights:** Create & Edit Repair Orders, View, Search, and Filter Repair Orders, Add tasks and complaints to Repair Orders, Clock on/off to Billable/Non-Billable Tasks, VIN Scan with OCR technology, Direct Fusion instance integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DPFTrac DPF Tracking System free?

DPFTrac DPF Tracking System is free to download, with no in-app purchases.

### Is Karmak Mobile Service free?

Karmak Mobile Service is free to download, with no in-app purchases.

### Which has better reviews, DPFTrac DPF Tracking System or Karmak Mobile Service?

DPFTrac DPF Tracking System is rated higher. DPFTrac DPF Tracking System averages 4.4 out of 5 from 7 ratings, while Karmak Mobile Service averages 4.3 from 9 ratings.

### Do DPFTrac DPF Tracking System or Karmak Mobile Service have ads?

Neither DPFTrac DPF Tracking System nor Karmak Mobile Service shows ads.

### Which is updated more often, DPFTrac DPF Tracking System or Karmak Mobile Service?

DPFTrac DPF Tracking System ships an update every 2 months, and Karmak Mobile Service every 3 weeks. Most recently, DPFTrac DPF Tracking System was updated on November 2, 2026 and Karmak Mobile Service on November 3, 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.*