
Marigold: Period Tracker
A free, ad-free period and cycle tracker that keeps all your data on your phone, with predictions, insights and a doctor report.
With 20 years of experience in the industry, we build and publish mobile apps and games, and help other developers get found and installed.
RedFoxApps is an independent studio and publisher of mobile apps and games. We build our own titles, publish games from other developers, and offer development, ASO and advertising services.
Two decades in the industry have taught us that shipping a build is only half the work. The other half is the store listing, the soft launch, getting found in search and bringing the right players in.
We do both halves. We design and build mobile apps and games, then prepare the release and keep them updated afterwards. When another developer brings us a finished game, the same team reviews the build, sets up the store pages and runs the launch.
Mac and Windows apps are planned alongside our mobile titles.
What we have built and published ourselves.

A free, ad-free period and cycle tracker that keeps all your data on your phone, with predictions, insights and a doctor report.
A calculator that shows its steps and checks every answer, plus a full scientific mode that works offline.
A workout plan app that builds strength training around your injuries, equipment and schedule, then tracks every set.
A clean, distraction-free Sudoku with hints, lives and global leaderboards.
Four services that work on their own or together.
We build mobile apps and games from first prototype to store launch, then keep them updated after release.
You have a finished build. We take it through review, polish and launch, then help it grow.
Better rankings bring more visitors, and a better store page turns more of them into installs.
Paid campaigns for mobile apps and games, built on proper tracking and creative testing.
We pick the tool that fits the product, not the other way round.
We say what we know, what we do not, and what it costs. Quotes are written down before work begins.
Our guides and articles cite their sources and show when they were last updated, so you can check us.
We follow App Store and Google Play rules from the first week, so review is planned for instead of discovered at the end.
RedFoxApps is an independent studio and publisher of mobile apps and games. We also offer development, publishing, ASO and advertising services.
Yes. If you have a finished build, we review it, prepare the store listing and run the launch. See our publishing service.
Unity 3D, React Native, Flutter, Swift and Three.js. Each technology page explains when we choose it.
Yes, Mac and Windows apps are planned alongside our mobile titles.
Use the contact page or email [email protected].
Tell us what you are working on. We reply with a clear next step.
Contact us