# MasterTrak vs ExxonMobil PSMS

The clearest difference is rating: MasterTrak at 5.0 against ExxonMobil PSMS's 3.9. MasterTrak also leads on update cadence (monthly vs every 4 months) and iOS requirement (15.0 vs 18.5). ExxonMobil PSMS's advantage is ratings volume (19 vs 5). On price, ads, in-app purchases and monetization model there is nothing between them.

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

MasterTrak holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 5 and 19 respectively.

MasterTrak ships an update monthly, ExxonMobil PSMS every 4 months. The most recent releases landed on August 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | MasterTrak | ExxonMobil PSMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/mastertrak/id1499386102/reviews)** | [3.9 (19 ratings)](https://appshunter.io/ios/app/exxonmobil-psms/id6479717943/reviews) |
| Number of ratings | 5 | **19** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | Free |
| Size | 75 MB | 178 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Dover Corporation](https://appshunter.io/developer/845082330) | [Exxon Mobil Corporation](https://appshunter.io/developer/528788995) |

## What reviewers say

### MasterTrak

[App page](https://appshunter.io/ios/app/mastertrak/id1499386102)

Monitor and manage industrial engine fleets in real-time from any location. This system provides essential management information to help reduce the total cost of ownership for your fleet.

**Highlights:** Real-time fleet monitoring, Anywhere, anytime management, Industrial engine fleet focus, Cost of ownership reduction, Management information system

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

**In-app purchases:** none


### ExxonMobil PSMS

[App page](https://appshunter.io/ios/app/exxonmobil-psms/id6479717943)

This app provides field workers with essential references to enhance safety management and reduce workplace injuries. It incorporates human performance concepts and promotes effective safety engagement to reinforce a culture of care and leadership.

**Highlights:** Safety checks on safeguards, Human performance concepts, Effective safety engagement, Workforce safety capability, Leadership expectations, Field worker references

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

**In-app purchases:** none


## Frequently asked questions

### Is MasterTrak free?

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

### Is ExxonMobil PSMS free?

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

### Which has better reviews, MasterTrak or ExxonMobil PSMS?

MasterTrak is rated higher. MasterTrak averages 5.0 out of 5 from 5 ratings, while ExxonMobil PSMS averages 3.9 from 19 ratings.

### Do MasterTrak or ExxonMobil PSMS have ads?

Neither MasterTrak nor ExxonMobil PSMS shows ads.

### Which is updated more often, MasterTrak or ExxonMobil PSMS?

MasterTrak ships an update monthly, and ExxonMobil PSMS every 4 months. Most recently, MasterTrak was updated on August 10, 2026 and ExxonMobil PSMS on September 9, 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.*