# Sullivan on Comp vs Matrix CompCalc

The clearest difference is monetization model: Matrix CompCalc at free against Sullivan on Comp's subscription. Matrix CompCalc also leads on update cadence (every 6 weeks vs every 16 months) and ratings volume (3 vs 1). Sullivan on Comp's advantage is iOS requirement (10.0 vs 15.6). On price, rating, ads and in-app purchases 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 — 5.0 for Sullivan on Comp against 5.0 for Matrix CompCalc. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Sullivan on Comp ships an update every 16 months, Matrix CompCalc every 6 weeks. The most recent releases landed on September 22, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sullivan on Comp | Matrix CompCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sullivan-on-comp/id1314164920/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/matrix-compcalc/id1611043147/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 weeks** |
| Monetization | Subscription | **Free** |
| Size | 80 MB | 53 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Sullivan & Associates, LLP](https://appshunter.io/developer/1314164919) | [Thomas Smith](https://appshunter.io/developer/1725182113) |

## What reviewers say

### Sullivan on Comp

[App page](https://appshunter.io/ios/app/sullivan-on-comp/id1314164920)

This app provides comprehensive and easily accessible information on California workers' compensation law. It features a powerful search tool, legal index, and an archive of case law updates and webinars. Access is exclusive to subscribers of the online service.

**Highlights:** Complete discussion of CA workers' comp law, Clarity-focused writing, Comprehensive search tool, Legal index by topic, Nine-year case law archive, MCLE/CE credit webinars

**Features:** macOS Compatibility

**In-app purchases:** none


### Matrix CompCalc

[App page](https://appshunter.io/ios/app/matrix-compcalc/id1611043147)

This app calculates various aspects of California Workers' Compensation claims, including permanent and temporary disability, life pensions, and death benefits. It features a PD rating schedule, AMA WPI tables, and estimators for present value and cost of living adjustments.

**Highlights:** Permanent Disability rating schedule, Temporary Disability calculations, Life Pension and Life Expectancy estimators, Death Benefit calculations, Present Value and COLA estimator, Combined Vale Equation module, Date Calculator

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sullivan on Comp free?

Sullivan on Comp is free to download, with no in-app purchases.

### Is Matrix CompCalc free?

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

### Which has better reviews, Sullivan on Comp or Matrix CompCalc?

Sullivan on Comp and Matrix CompCalc are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Sullivan on Comp or Matrix CompCalc have ads?

Neither Sullivan on Comp nor Matrix CompCalc shows ads.

### Which is updated more often, Sullivan on Comp or Matrix CompCalc?

Sullivan on Comp ships an update every 16 months, and Matrix CompCalc every 6 weeks. Most recently, Sullivan on Comp was updated on September 22, 2026 and Matrix CompCalc on October 11, 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.*