Historycentral Apps

Explore Our Apps

We have been building learning and professional tools since 1989—first on CD-ROM, now on iPhone, iPad, and Mac. Our apps fall into four families. Pick one to see everything in it.

16 apps

History Apps

American history from 1492 to today, the twentieth century and world history, and four games that make the past stick. See all history apps

15 apps

Formulator Apps

Professional calculators for the trades, engineering, and finance—plumbing, HVAC, electrical, mechanical, civil, real estate, and more. See the Formulator line

Trades Engineering Finance & Property

5 apps

Navy Apps

The complete history of U.S. Navy ships—nearly 10,000 entries—plus dedicated apps for battleships, carriers, cruisers, and submarines. See all Navy apps

All Ships Battleships Carriers Cruisers Submarines

2 apps

Business Apps

Invoicing and job management for freelancers, contractors, and service companies. One-time purchase, no subscription, on iPhone, iPad, and Mac. See the business apps

Bill-Craft ServiceBoss