Mobile apps
Fast, reliable and easy-to-use apps for iOS and Android. We take on the whole process, from requirements to the store release.
We build mobile apps, games and web products.
Jüpiter Yazılım is a technology company building software for web, mobile and desktop. We develop and publish our own products, and bring the same care and quality to our clients’ projects.
What we do
End-to-end product development, from design to launch.
Every step it takes to turn an idea into a product people rely on every day, under one team.
Mobile games
Mobile games for players of all ages, with smooth gameplay and well-balanced difficulty. From concept to launch, from game economy to live updates.
Websites
From corporate websites to complex web applications: fast, secure, search-engine friendly solutions that work flawlessly on every device.
Interface design
We design flows, screens and the design system as a clickable prototype before any code is written.
Launch and growth
Launch, analytics, performance monitoring, maintenance and regular updates keep your product strong long after release.
5.0
Projects
Our own products, live in the stores.
We design and build our products end to end, from the first idea to launch, and keep improving them after release.
App, expense trackingiPhone, iPad, Apple Watch
Costbook
All your spending in one place.
Monthly bills, trips, events or any project: Costbook keeps a separate list for every budget. Scan a receipt and AI fills in the amount and category. In shared lists, Costbook works out who owes whom.
- App Store rating
- 5.0
- released
- October 2026
Game, rhythm and reflex gameiOS, Android
Pulse
Time your tap. Reach the top.
Think your reflexes are sharp? Pulse has one rule: tap at exactly the right moment. Rings close in, the tempo climbs, the screen lights up. String perfect hits together to multiply your score, use power-ups wisely and put your name at the top of the global leaderboard. Stopping without “just one more round” is nearly impossible.
- App Store rating
- 5.0
- released
- June 2026
Game, party gameiOS, Android
Panic Party
The clock runs down, the laughs go up.
Gather your friends, put the phone in the middle and get ready to panic! Every turn brings a new task and every second a little more tension: as time runs out, the tension builds even more! The laughs never stop, and whoever keeps their cool the longest wins.
- App Store rating
- 5.0
- released
- May 2026
How we work
How a project comes together.
- 01
Discovery
We clarify goals, users and scope together. At the end of this phase we deliver a written scope, timeline and proposal.
Project summary
Scope document
- Audience and needs
- Core user flows
- Platforms: web, mobile, desktop
- Timeline and budget
- 02
Design
We build user flows and interfaces as a clickable prototype, and validate the experience together before development starts.
- 03
Development
We split the project into meaningful milestones and share a version you can review and test at the end of each one.
- Milestone 1: Infrastructure and design system100%
- Milestone 2: Core features100%
- Milestone 3: Integrations72%
- Milestone 4: Testing and polish18%
A test build is ready for your review - 04
Launch and beyond
We handle the launch, monitoring and analytics. After release, we stay with the product through maintenance and updates.
LiveVersion 1.0
Released
- Web
- iOS
- Android
- Desktop
Active users
Let’s talk about your project.
Tell us what you need, and we’ll plan the right solution together.