# Sullivan on Comp vs National CompCalc

The clearest difference is update cadence: National CompCalc at every 6 weeks against Sullivan on Comp's every 19 months. National CompCalc also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Sullivan on Comp ships an update every 19 months, National CompCalc every 6 weeks. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Sullivan on Comp | National CompCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sullivan-on-comp/id1314164920/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 6 weeks** |
| Monetization | Subscription | — |
| Size | 22 MB | 40 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| 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, Vision Pro support

**In-app purchases:** none


### National CompCalc

[App page](https://appshunter.io/ios/app/national-compcalc/id6754295249)

**Features:** macOS Compatibility

**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 National CompCalc free?

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

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

Neither Sullivan on Comp nor National CompCalc shows ads.

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

Sullivan on Comp ships an update every 19 months, and National CompCalc every 6 weeks. Most recently, Sullivan on Comp was updated on November 2, 2026 and National CompCalc on October 28, 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.*