CharityCalc: Custom Gift Annuity Calculator App Development
CharityCalc is a mobile app that helps users see how much income they can receive from charitable donations over time in the United States. The app addresses a significant market gap where calculations were primarily available through websites with very limited mobile options.
For this gift annuity calculator app development project, Space-O Technologies used Flutter for cross-platform deployment, PHP Laravel for backend logic, and a PostgreSQL database to process complex financial data. The app enables users to generate precise calculations and professional PDF summaries instantly.
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Industry
Financial Technology
Platform Type
Gift Annuity Calculator App
Platforms
iOS & Android
Service Provided
Mobile App and Web Development

About CharityCalc
CharityCalc is a mobile-first financial planning tool designed for individuals exploring charitable gift annuities. The app simplifies complex financial calculations with an easy-to-use interface. Users can calculate returns on charitable investments, understand tax benefits, and generate personalized PDF summaries.
The platform serves both individual investors and financial advisors who need quick, accurate gift annuity projections for lifetime income planning.
Client Requirements
Our client, a financial expert from California, saw a clear gap in the market. The client, with an extensive background in the financial domain, recognized that gift annuity calculations were only available through scattered websites, leaving users with almost no reliable mobile options.
They needed a mobile application that could support multiple gift annuity calculation models. The solution also needed to connect with official U.S. financial data sources, generate professional PDF reports, and include an admin panel to manage users and organizational data.
Solution We Developed
Space-O Technologies built CharityCalc from the ground up using proven technologies to address the unique challenges of mobile gift annuity calculations:
- Flutter for cross-platform app development powers both iOS and Android applications, ensuring a consistent user experience across platforms.
- PHP Laravel handles the robust backend infrastructure, managing complex financial calculations and extensive data processing from multiple government sources.
- PostgreSQL database stores extensive data records required for complex actuarial calculations across different age combinations and gift annuity scenarios.
We built CharityCalc to fill a market gap where gift annuity calculations were mostly website-based. The app processes data from multiple sources to provide accurate calculations for users.
The biggest technical challenge involved processing massive datasets from different financial organizations. Our team organized this data into a unified calculation engine. The app we developed handles seven to eight distinct gift annuity models with various combinations of single-life and joint-life scenarios.

Mobile App for Gift Planning Key Features

Multiple Calculator Types
Offers seven different calculation options, from simple single-life annuities to more complex joint-life scenarios. Users can easily switch between immediate and deferred gift options based on their planning needs.
Comprehensive Input Forms
Users fill out straightforward forms with their gift details, tax information, and personal circumstances. The app validates entries automatically to prevent calculation errors before processing.
Detailed Financial Results
Once calculations are complete, users see a clear breakdown of their potential benefits, including annual payments, tax savings, and charitable deductions. All financial details are presented in easy-to-understand formats.
PDF Report Generation
The app creates professional reports that users can save or share with their financial advisors. These detailed summaries include all calculation specifics and tax implications for future reference.
Calculation History
Previous calculations are saved automatically, making it simple to compare different gift scenarios. Users can quickly access past results and track their charitable giving plans over time.
SMS Authentication
Getting started is simple with phone number verification. Users receive a text code to access their account without needing to remember complex passwords.

User Management System
Administrators can view all registered users, track account activity, and manage user profiles from a central dashboard. The system provides helpful analytics on user engagement and platform usage.
Calculation Analytics Dashboard
Visual charts show how the platform is being used, which calculation types are most popular, and user behavior trends. This data helps improve the service over time.
Financial Data Management
The platform stays current with official rate updates from financial authorities. Administrators can import new data and manage the extensive factor tables that power accurate calculations.
Support Management System
When users need help, they can submit questions directly through the app. The support team tracks these requests and responds efficiently to maintain user satisfaction.
Provider Management Infrastructure
The system supports partnerships with organizations by allowing dedicated provider accounts. Each provider maintains separate data while administrators oversee the entire network.
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