Indie app studio · Spain

Small studio. Apps that go places.

We design and build mobile apps that make everyday life a little easier: TravelTrail for planning trips and, soon, Bluvli for your pregnancy and Velita for your baby's sleep.

DuoDevApps logo 🧭🌙🗺️
Traveler planning the day with TravelTrail at a viewpoint in Lisbon
Our apps

Three apps, made with the same care.

TravelTrailTrip planner · iPhone & Android

TravelTrail

The trip planner that puts your whole trip on one map, day by day. Rated 4.6 on the App Store by travelers in 22 countries.

TravelTrail map
TravelTrail travel legacy
TravelTrail home
VelitaBaby sleep planner · iPhone

Velita

Log naps and nights in one tap. Velita learns your baby's rhythm and shows when the next sleep is likely: a range, how sure it is, and why.

Velita Today: a plan for the rest of the day
Velita night mode: a dark screen with one large button
Velita Home: the likely next nap as a time range
BluvliPregnancy planner · iPhone and iPad

Bluvli

Your pregnancy, week by week, and a calm plan for everything around it. Your week, your appointments and your lists in one place, on your iPhone.

The Bluvli app icon: a lowercase b with a rose dot and a sprig of flowers
  • No account
  • Kept on your iPhone
  • No ads
How we work

Built with care, for real life.

🎯

Built with our users

We read every review. Some features exist because someone using our apps asked for them.

✨

Beautiful and simple

Native apps, fast and clean. No bloat, no dark patterns.

🌍

Made for the world

Apps designed for people everywhere, in their own language. TravelTrail already speaks 13.

What's next

TravelTrail is now on Android.

Our first version for Android is live on Google Play, and a full redesign is on its way. Follow along on TikTok and Instagram.

Let's talk.

Questions, ideas or press? Write to us and a human will answer.