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  • Updated: 26 Nov 2025

How to Build a Custom Astrology App Like Co-Star or The Pattern: Tech Stack & API Checklist

Astrology app attracts millions, with 68% of users looking for customized horoscope match reports and live planet tips across Android and iOS apps every day worldwide now.

Highlights

  • 68% users check horoscope features daily, making astrology apps a growing digital interest.
  • 72% mobile users prefer astrology apps offering match reports, daily tips, and zodiac forecasts.
  • 61% app users are willing to pay for premium astrology readings and consultation services.
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Co-Founder

Vandana Abrol Digittrix Blog Author Image

5 min read

An enthusiastic developer and skilled business management expert with over a decade of experience in the field

A guide on building a custom astrology app, featuring a zodiac wheel and characters reviewing tech stack and API essentials

Astrology apps have gained significant popularity in recent years. Apps like Co-Star and The Pattern demonstrate how astrology can be integrated with modern technology to help users explore their zodiac profiles, daily horoscopes, and personality traits. If you plan to create an astrology app like Co-Star or design one similar to The Pattern, you need a comprehensive guide that covers its logic, features, tech stack, and APIs.

This article explains everything in simple words, including development steps, system features, back-end planning, and the list of tools and platforms you may need. It also shows how an astrology app development company or skilled developers can assist in the process.

Interested in astrology apps? Read Digittrix’s guide on building a custom astrology app to learn what to expect in design, cost, and features!

Understanding the Purpose of Astrology Apps

Astrology apps offer users personalized zodiac readings, daily predictions, future timelines, match-making reports, and sometimes psychological astrology insights. These apps operate by collecting user birth data such as date, time, and location. This information is used to generate natal charts using astrology formulas like Vedic or Western astrology.

When users download an astrology app like Co-Star, they expect highly personalized reports based on real-time planetary data. Similarly, an astrology app like The Pattern emphasizes personality analysis, human relationship dynamics, and life cycles. Both apps combine astrology algorithms with artificial intelligence, machine learning, and APIs that process astronomical information data.

Key Features for an Astrology App

User Registration and Profile Setup

Users should be able to sign up using email, phone, or social platforms. The app should collect birth date, birthplace, and exact birth time for accurate zodiac readings calculations.

Personal Dashboard

A dashboard that displays daily readings, moon phases, planetary movements, and other personalized information updates.

Natal Chart Generation

It calculates the user’s birth chart and shows planetary positions. This is the main feature of the astrology app development.

Daily, Weekly, and Monthly Horoscope Reports

Automated horoscope reports with clear text content based on planetary position shifts.

Personality and Relationship Compatibility Checker

Matching two profiles based on astrological rules and patterns.

In-App Astrologer Consultation

Options to chat, call, or video chat with a qualified astrologer.

Notifications and Reminders

Birthdays, cosmic events, moon cycles, retrogrades, and other astrology phenomena alerts.

Sell personalized reports, consultation sessions, and star-related services and products.

Social Sharing

Users enjoy sharing astrology results with friends on social media buttons.

AI-Powered Astrology Chatbot

A chatbot that provides quick answers about zodiac signs, planetary influences, or spiritual topic queries.

Choose the Right Development Team

To create an app like this, you can hire an astrology app development company that already understands zodiac app logic. Such a company can also provide expert guidance on selecting APIs, designing user workflows, and setting up the backend algorithms.

If you don't need a full team, you can hire an Android App Developer or an iOS App Developer for platform-specific app development. An Android App Developer can assist with designing the app for the Play Store, while an iOS App Developer handles the App Store requirements.

Front-End Tech Stack for Astrology App

The front-end handles how users see and interact with the application. Some good options include:

  1. Android: Kotlin, Java, XML
  2. iOS: Swift, SwiftUI
  3. Cross-Platform: Flutter, React Native

If you are focusing on astrology mobile app development, using Flutter or React Native can help you build apps for both iOS and Android more quickly. It is a good choice when you want both versions to look consistent and function similarly smoothly.

Back-End Technologies

The back-end manages app logic, user data, astrology calculations, and API connections.

  1. Server-side - Node.js, Python, PHP, Ruby
  2. Databases - MongoDB, MySQL, PostgreSQL
  3. Cloud - AWS, Google Cloud, Firebase
  4. Real-time features - WebSockets, Firebase

Real-time astrology calculations require accuracy. Using a programming language like Python is helpful because it supports astrology libraries and mathematical functions formulas.

Astrology APIs You May Need

To develop detailed horoscopes and natal charts features, you will need reliable astrology APIs. Here are common categories of APIs:

  1. Horoscope API: Gives daily, weekly, and monthly reports
  2. Astrology Chart API: Generates birth charts based on user data
  3. Planetary Position API: Real-time planet and moon position data
  4. Compatibility API: Compares two charts for relationship matching
  5. Location API: Helps find local time zone and birth location

Some API sources provide Western astrology, Vedic astrology, numerology, and tarot readings.

How Astrology Calculations Work

When a user enters their birth details, the app uses mathematics, astronomy, and astrology formulas to generate a natal chart. The app calculates:

  1. Geographical timezone and coordinates
  2. Planetary longitude and latitude at the time of birth
  3. House division (Placidus or Equal House)
  4. Zodiac sign placements (Sun, Moon, Rising, etc.)

This information is simplified to explain Jupiter impact, Saturn return, or emotional issues cycles.

Development Process Step-by-Step

1. Market Research and Planning

Review existing apps and analyze features of astrology apps like Co-Star or The Pattern. Prepare wireframes, business models, and potential revenue strategies options.

2. UI/UX Design

The app should look clean, easy to read, and visually appealing. Use soothing background colors, attractive fonts, and subtle animations. Focus on usability rather than design complexity.

3. App Development

This stage involves coding the front-end and back-end modules. You can use astrology app development to build features like API connections, calculator setup, chat modules, and paid features access.

4. Use astrology app development services

With the help of astrology app development services, you can create customized dashboards, test astrology-based logic, manage databases, and develop user-friendly interfaces navigation.

5. Testing and Debugging

Test for data accuracy, birth chart accuracy, payment bugs, and login problems safety.

6. Deployment and Support

Publish the app on Google Play and the Apple App Store. Provide updates to keep the app up to date.

Monetization Options

You can earn money from the app in various ways:

  1. Subscription model with weekly or monthly plans
  2. Paid compatibility reports
  3. Live astrologer sessions
  4. Ads and sponsored content
  5. In-app astrology shop

Why On-Demand Astrology Apps Are Rising

People want quick access to astrology readings, compatibility reports, and self-analysis tools. This boosts the growth of on-demand astrology app development in the tech industry. It also gives users access to real-time zodiac reports without needing to visit astrologers physically.

Astrology mobile app development is rapidly expanding because users value astrology-based personality insights and predictive analysis. Additionally, developing astrology mobile apps supports spiritual communities and astrology enthusiasts in various ways and languages.

When to Choose Experts

If you're planning to build a commercial-grade app, it's best to work with a specialized team. An astrology app development company can handle API integration, user security, and platform testing. This helps ensure the creation of a more user-friendly and accurate astrology app.

When developing on iOS or Android, hiring a skilled Android App Developer or iOS App Developer can improve performance, design, and app store optimization compatibility.

Considering online astrology consultations? Read Digittrix’s step-by-step guide on building an online astrology consultation platform to get started!

Final Words

Creating an astrology app like Co-Star or The Pattern requires careful planning, a solid understanding of astrology principles, and strong technical skills. By focusing on core features, choosing the right front-end and back-end technologies, selecting reliable APIs, and picking suitable astrology app development services, you can build a meaningful app for astrology enthusiasts worldwide.

Over time, you can add features like moon calendars, tarot readings, numerology, spiritual chats, and community groups. A clear step-by-step process and creative thinking can help make your astrology app a strong digital platform for astrology enthusiasts everywhere.

Build Your Custom Astrology Consultation App with Digittrix

Astrology consultation apps are now a helpful way for people to receive guidance based on zodiac signs, personality traits, and planetary movements. If you want to build an app with features like daily horoscopes, accurate birth chart readings, AI-based astrology predictions, live chat with astrologers, or relationship compatibility reports, Digittrix can guide you from concept to completion launch.

Digittrix has 14 years of experience developing Android and iOS apps. We are known as a top astrology app development company that offers comprehensive services for both simple and advanced astrology platforms. Our focus is on creating secure, easy-to-use, and well-structured astrology mobile apps tailored to your project goals.

To start your astrology app development journey with Digittrix, reach out to us at +91 8727000867 or email digittrix@gmail.com.

digittrix development experience more than 10 years

FAQ About How to Build a Custom Astrology App Like Co-Star or The Pattern: Tech Stack & API Checklist

These apps collect user birth data such as date, time, and location, then use astrology formulas and APIs to calculate charts, predictions, and personality details.

Important features include user profiles, natal chart generation, horoscope reports, compatibility analysis, live astrologer sessions, notifications, and paid reports.

Yes, you can add audio, video, or chat features that let users book consultations with certified astrologers and pay via integrated payment gateways.

Yes, APIs are essential for calculating planetary positions, zodiac charts, daily horoscope updates, time zones, and compatibility reports.

Yes, you can use Flutter or React Native to build cross-platform applications using a single codebase for Android and iOS.

Popular revenue options include in-app purchases, subscriptions, paid consultations, personalized reports, and ad placements.

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