Yunus Seyyar

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Flutter · iOS · Android · APIÇeyiz Sandığım
Çeyiz Sandığım home dashboard with countdown, appointment, invitation and open-task cards
Trousseau Collection screen showing categories and completion progress
Events screen showing wedding, henna night, engagement and ceremony preparations on a timeline
All work

01Case studyProduct view

Independent product · Mobile app

Çeyiz Sandığım

Live on the App Store

A planning app that brings wedding lists, tasks, budgeting and a shared partner workspace into one mobile product.

My role
Product strategy, mobile development, API and release
Platform
Flutter · iOS · Android · API
Year
2026
Explore the case study

01Starting point

Case study · 2026

Independent product · Mobile app

A product that begins by clarifying the need.

01AProblem

Wedding planning becomes fragmented across trousseau lists, event tasks, budgets, guests and appointments. Keeping the same plan current for two people makes that fragmentation even more visible.

01BSolution

Çeyiz Sandığım unifies the core planning modules in a calm mobile information architecture, then supports everyday use with a partner workspace, real-time sync and store subscriptions.

02Product and foundation

Product capabilities: 06 · Architecture decisions: 05

Flutter · iOS · Android · API

The product and technical decisions behind the experience.

Role
Product strategy, mobile development, API and release
Status
Live on the App Store
Platform
Flutter · iOS · Android · API

Experience scope

Product capabilities

  1. 01Category-based trousseau collection
  2. 02Events, tasks and countdowns
  3. 03Budget, guest, appointment and music management
  4. 04Inspiration board and photo uploads
  5. 05Partner invitations and a shared workspace
  6. 06Home-screen countdown widget

How it was built

Architecture decisions

  1. 01A single mobile product codebase with Flutter and Riverpod
  2. 02TypeScript, Express, PostgreSQL and Socket.IO API
  3. 03Firebase authentication and secure session flow
  4. 04Store subscriptions and entitlement checks through RevenueCat
  5. 05Error and performance visibility with Sentry

03A closer look

05 Visual

Çeyiz Sandığım

The product in view.

Visual 01Primary product view
Çeyiz Sandığım home dashboard with countdown, appointment, invitation and open-task cards
Product screenÇeyiz Sandığım home dashboard with countdown, appointment, invitation and open-task cards
Visual 02Supporting product view
Trousseau Collection screen showing categories and completion progress
Product screenTrousseau Collection screen showing categories and completion progress
Visual 03Supporting product view
Events screen showing wedding, henna night, engagement and ceremony preparations on a timeline
Product screenEvents screen showing wedding, henna night, engagement and ceremony preparations on a timeline
Visual 04Supporting product view
Management Hub bringing together budget, guests, inspiration, music and appointments
Product screenManagement Hub bringing together budget, guests, inspiration, music and appointments
Visual 05Supporting product view
Budget Management screen with total, spent, remaining and recent transactions
Product screenBudget Management screen with total, spent, remaining and recent transactions

04Outcome

Live on the App Store

Live on the App Store

Where is the product today?

The product launched on the App Store with its production store artwork and complete subscription/release flow. The case demonstrates single product ownership from design decisions and the mobile client through the API and operational checks.

View on the App Store