Comparison

GPC vs Warmaster Companion

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

GPC

A Better Class of Oil

A companion app for WM and WMR

Free

🔧 Utilities

No ratingsView app →

About

GPC

This app helps users find the right oil and lubricant products for their vehicles. It provides recommendations based on specific vehicle information, ensuring optimal performance and maintenance.

Highlights

Product recommendations
Vehicle specific search
GPC store information
Oil and lubricant guide

Features

Read full description

Penrite Product Recommendation guide for GPC Stores

About

Warmaster Companion

Features

Read full description

An app that assists users in calculating combat resolution encounters in games of WMR, and building WMR army lists on the go.

Screenshots

GPC4 screens

Warmaster Companion4 screens

Verdict

The call

The clearest difference is update cadence: Warmaster Companion at monthly against GPC's every 17 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

GPC ships an update every 17 months, Warmaster Companion monthly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 7 level

GPC versus Warmaster Companion: the parameters behind the verdict, then further details
Parameter	GPC	Warmaster Companion
Price	Free	Free
Positive reviews	0.0% of reviews	—
Update frequency	Every 17 months	Monthly — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	16.4	15.1 — better
Further details — not scored
Size	47 MB	57 MB
Age rating	4+	4+
Developer	Penrite Oil Company	Michael La Dow

In-app purchases

None

GPC

No in-app purchases

None

Warmaster Companion

No in-app purchases

Questions

Is GPC free?

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

Is Warmaster Companion free?

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

Do GPC or Warmaster Companion have ads?

Neither GPC nor Warmaster Companion shows ads.

Which is updated more often, GPC or Warmaster Companion?

GPC ships an update every 17 months, and Warmaster Companion monthly. Most recently, GPC was updated on October 8, 2026 and Warmaster Companion on October 6, 2026.