Yes, Understrap is completely free to use. It is available on WordPress.org at no cost.

How many websites use Understrap?

Understrap has 10K+ active installations as tracked by WordPress.org.

What are the best Understrap alternatives?

Popular alternatives to Understrap include Astra, Twenty Twenty-Five, Twenty Twenty-Four. You can compare them on our theme directory.

Does Understrap work with the latest WordPress?

Understrap requires WordPress 5.0+ and PHP 5.2+. Check the theme's WordPress.org page for the latest compatibility information.

Understrap — Reviews, Rating & Alternatives (2026)

As of April 2026, Understrap is a WordPress theme with 10K+ active installations and a 4.5/5 rating from 19 reviews. It has been downloaded 296K+ times in total. Requires WordPress 5.0+ and PHP 5.2+. Available on WordPress.org since 2016. Last updated 2 years ago — may have compatibility concerns. Top alternative: Astra.

4.5/519 reviews

10K+active installs

296K+total downloads

10 yearssince 2016

Overview

The renowned WordPress starter theme framework that combined Underscores and Bootstrap. Trusted by more than 100,000 developers for building handcrafted, custom WordPress sites.

Read full description on WordPress.org

Ratings & Reviews

4.519 reviews

5 ★

16

4 ★

1

3 ★

0

2 ★

0

1 ★

2

Recent Reviews

Amazing job

by Maryna·4 years ago

Thank you so much. Understrap is the winner of all hearts!

Use it as my starter theme for all my projects now!

by Ross·4 years ago

Number 1 bootstrap starter theme

Thanks. This save me a lot of time.

by Mariela Zárate·4 years ago·1 reply

Great starter theme for developers.

Doesn’t install

by lwk2431·5 years ago·1 reply

Downloaded to WordPress themes folder, installed npm (Mac Catalina) and ran “npm install” – nothing worked. Miles of errors and no meaningful solution.

My go-to WordPress theme baseline

by Shaun Knowles·5 years ago

Thanks, You’ve saved me hours if not days over the years.