Mixed-reality company Within said Thursday it has soldWonderscope, itsaugmented-realityreading app for Apple devices, to Amira Learning.

Both Wonderscope and Amira Learning’s technology listen to students reading aloud.

With Wonderscope, reading out loud unlocks steps in an immersive AR story.

With Amira, it’s a way for its technology to assess and assist in reading mastery.

Financial terms of the acquisition weren’t disclosed.

One of Wonderscope’s stories, Clio’s Cosmic Quest, follows an animated space particle to her nebula.

Amira Learning’s artificial intelligence helps assess students' reading skills, personalize tutoring and screen for dyslexia risk.

Its software is used by nearly 1 million students in more than 5,000 schools, the company said.

Within co-founder and CEO Chris Milk called Wonderscope one of the company’s “proudest accomplishments.”

Correction at 7:32 a.m. PT: The spelling of Amira Learning has been fixed.