MastoryAI storytelling apps for kids
We designed and built Mastory's Flutter app and marketing website: stories, music and learning for kids in the US and UK, with the controls parents look for.
One brand, two very different audiences
Mastory wanted a whole family of learning apps for kids under one brand: storytelling, music, games and homework help. Each one had to feel like part of the same product.
The harder part was the audience. Children aged 4 to 14 need something playful and easy to use. Parents choosing an app for their family need clear controls and a product they can trust. The website and the app had to win over both.
Design system first, then build in milestones
We started with a Figma design system covering colour, type, icons, illustrations and a responsive grid. Every app screen and every website section was built from the same set of parts, which kept the brand consistent as the product grew.
We chose Flutter so one codebase could ship to both iOS and Android. The work ran in milestones over 12 weeks, so progress was visible at every stage instead of arriving as one big reveal at the end.
A closer look at Mastory
What we built
- 01
Flutter mobile app
One app for iOS and Android with a storytelling engine, a music player and parental controls.
- 02
Marketing website
A responsive site that presents the product to parents and makes the download path obvious on any screen.
- 03
Design system
A Figma component library with tokens, icons, illustrations and grid rules for the team to build new features on.
- 04
Integrations
Connections to the content CMS, in app purchases and analytics through REST and GraphQL APIs.
- 05
Performance work
Optimised images, lazy loading and a Core Web Vitals pass, with Lighthouse scores above 95.
- 06
Handoff and support
Full documentation, a codebase walkthrough and 30 days of support after launch.
What happened after launch
Working with this team felt like having a co-founder who actually ships. They understood our vision immediately and translated it into a product our kids genuinely love using.
Planning something like Mastory?
Tell us what you want to build. We reply within 24 hours with honest feedback and next steps.