Comparison

Sullivan on Comp vs National CompCalc

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

Head to head
About

Sullivan on Comp

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
Read full description

Sullivan on Comp is the most comprehensive resource on California workers' compensation. It is written for attorneys, claims adjusters, employers and anyone else that needs current, complete, and easily accessible information on this body of law. Sullivan on Comp is published both as a 16-volume set of books and via online subscription. Now, enjoy all the benefits of your subscription on your iPhone or iPad with the SOC app. Use Sullivan on Comp for quick and easy answers to questions about California Workers' Compensation law. Key features include: + The most complete discussion of California workers' compensation law. + Written with a deliberate emphasis on clarity. + Comprehensive search tool. + Legal index for look-ups by topic area. + Nine-year archive of past monthly Case Law Update articles. + View webinars to earn MCLE credits for attorneys, and CE credits for WC adjusters and WC bill reviewers. + Access the entire archive of 85+ hours of monthly and quarterly webinars via the app. Access to content is available exclusively to Sullivan on Comp subscribers with an Online Only or Full Subscription plan.

About

National CompCalc

Features
Read full description

National CompCalc is a California Workers' Indemnity Calculator that includes: - A full PD rating schedule which automatically creates rating strings adjusting the WPI given the Part of Body, Age, Occupation, and DFEC. This version also incorporates a relational database for Occupation and Part of Body making input intuitive and simple. - Permanent Disability. - Temporary Disability. It also calculates TD liability for a given period based on the default max weekly rate for the date of industrial injury or a TD rate based on AWW manually imputed. - Life Pension. - Life Expectancy given the current age and based upon the 2008 / 2010 U.S. Life Tables as provided by the U.S. Census Bureau. - Supplemental Job Displacement Benefits. - Death Benefits, for the given date of industrial injury. - Present Value (PV) and Cost Of Living Adjustment (COLA) estimator for Life Pension and Total Disability Awards. The PV/COLA calculator estimates the total Future Value (FV) / PV / COLA for a given percentage of disability between 70-100% based on Age at time of first payment, Date of Injury, and inputted PV discount rate / COLA inflation rate / PV Rate Discount Compound. - Combined Vale Equation Module which computes CVE percentage and total indemnity given percentage numbers, DOI, AWW or PD Rate (defaulting to max). - AMA WPI Table/Formula from AMA Guides. Other features also include a Date Calculator, full listing of QME/Body Codes, and full access to support and training videos. Some nice aggregates our application has: - Includes the option with a tap of the screen to turn on or off the Combined Value Equation when multiple rating strings are involved. When the Combined Value Equation is turned off the adjusted PD for each rating string is aggregated rather than combined using the Combined Value Equation. - The user has an option to override default TD/PD indemnity rate in all screens (always bounded by min and max values). - The user can print, store or send the e-mail of PD Ratings / FV-PV-COLA calculations. All Users of the National CompCalc are instructed to consult the specific provisions of the California Labor Code and/or the DEU to ensure the accuracy of the information provided. It is not the intent of this product to provide legal representation, or legal advise. The user of the National CompCalc is encourage to retain legal counsel before using this product. National, CompCalc, and ndi-records.com are private entities and are not affiliated with or part of any government agency. Any services or information provided are not endorsed or validated by governmental authorities.

Screenshots

Sullivan on Comp4 screens
National CompCalc4 screens

Verdict

The call

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.

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

Sullivan on Comp ships an update every 19 months, National CompCalc every 6 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 7 level
Sullivan on Comp versus National CompCalc: the parameters behind the verdict, then further details
ParameterSullivan on CompNational CompCalc
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 19 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationSubscription—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size22 MB40 MB
Age rating4+4+
DeveloperMichael Sullivan & Associates, LLPThomas Smith

In-app purchases

None

Sullivan on Comp

No in-app purchases

None

National CompCalc

No in-app purchases

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 October 29, 2026 and National CompCalc on October 28, 2026.

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