Finance · 2025
Vaultline Wealth Management iOS App
A SwiftUI investment app with real-time portfolio tracking, Face ID security and Apple Pay funding.
- Client
- Vaultline
- Industry
- Finance
- Timeline
- 14 weeks
- Year
- 2025
- 4.9★
- App Store rating, up from 2.9★
- +212%
- Monthly active users
- 0.4s
- Average screen load
The Challenge
What was holding Vaultline back
Vaultline's legacy hybrid app suffered from 3-second screen loads and a 2.9-star rating, pushing high-net-worth users toward competitors with more polished native experiences.
Services delivered
Technology
- Swift
- SwiftUI
- Swift Charts
- WidgetKit
- Apple Pay
- Plaid
- Firebase
Our Solution
How Midline engineered the turnaround
- 01
Rebuilt the app natively in SwiftUI with a modular architecture and offline-first portfolio caching.
- 02
Designed a calm, data-dense interface with interactive charts, Live Activities for market moves and Home Screen widgets.
- 03
Integrated Apple Pay instant funding, Face ID step-up authentication and bank-grade encryption.
“Midline didn't just rebuild our app. They rebuilt our reputation in the App Store, and our reviews went from complaints to love letters.”
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