Independent app studio

Small apps.
Useful ideas.

We make focused digital products for the parts of life that deserve to feel simpler.

Designed and developed independently in Spain.

Our apps

One idea.
One clear job.

Each product starts with a specific frustration and earns every feature it adds.

Flexpertador icon Available

Active alarm

Flexpertador

Wake up by completing a push-up or squat challenge. The camera counts repetitions on your device.

iOS Android
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Unflame icon Available

Health & nutrition

Unflame

Personalised nutrition guidance, meal tracking, and practical tools built around long-term health habits.

Web iOS Android
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MentorWay icon Available

Learning

MentorWay

A focused way to explore lessons, mental models, and insights from people worth learning from.

Web iOS Android
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SOPT icon Available

Brain training

SOPT

Short visual exercises designed to challenge attention speed, peripheral awareness, and processing accuracy.

Web iOS Android
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Calen icon Available

Productivity

Calen

Create calendar events from images and audio, without manually copying every date, time, and detail.

Web iOS Android
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ResumTube icon Available

Video summaries

ResumTube

Get the key ideas from a YouTube video without sitting through every minute.

iOS Android Web
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Rosify icon Available

Personalised music

Rosify

Create a personalised song from the memories, details, and message that make a person special.

Web
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Curriculumify icon Available

Career tools

Curriculumify

Analyse your CV, find the weak points, and turn your experience into a clearer application.

Web
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56 Seas icon Internal testing

Travel checklist

56 Seas

A free, local-first ocean passport and trip planner for the seas you have seen, swum, sailed, or dived.

iOS Android
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100 Dives icon Internal testing

Diving checklist

100 Dives

A free, local-first checklist and trip planner for 100 of the world's most remarkable diving destinations.

iOS Android
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SU2KU icon Closed testing

Puzzle game

SU2KU

A refined Sudoku app for solo focus, shared solving, and fast head-to-head duels.

iOS Android
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What’s next

More useful things are on the way.

New experiments become products when they solve a real problem simply enough.

Tell us what you need

How we build

Useful beats impressive.

We like ambitious technology. We like it even more when it disappears behind a product that feels obvious.

01

Start with friction

Find the annoying, repetitive, or confusing part first.

02

Keep the promise narrow

A focused app should be explainable in one clear sentence.

03

Respect the person

Private by default, understandable, and honest about what the product does.

Work, support, or a good idea

Let’s make something useful.

support@yvb.app