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How To Build An Astrology App Like CoStar?
Looking to build an app like Costar? This blog is a step-by-step guide on how to make an astrology app like Costar, including must-have features, tech stack, development costs, and user experience strategies.
Neeraj Rajput

Neeraj Rajput

May 26, 2025

How To Build An Astrology App Like CoStar?

CoStar has brought astrology to the front line of the digital world again. The Verge reports that AI-driven horoscopes are now the preferred choice of people looking to read astrology each day. The global astrology app market reportedly hit upwards of $12 billion in 2023, and it is expected to grow step by step as Gen Z and millennials continue to be the main driving forces in the tech field by spirituality acceptance. CoStar, visually strong and heavily personalized, represents the power of a good and proper astrology app. Did you ever think about following suit with astrology and developing a new app like CoStar? In this blog, we will discuss costs, what steps to take to have a successful astrology app and many more. Let's get this blog started. 

 

Introduction of the CoStar Astrology App
 

costar astrology app
 

Costar is an astrology app launched in October 2017 and seamlessly combines NASA data with artificial intelligence to create deeply personalized horoscopes. The app contains a clean and efficient design, with daily insights that are treated lightly - often witty and blunt. Costar quickly found its market and audience, mainly among millennials and Gen Z. The app now has over 20 million downloads, using users' birth charts to deliver tailored astrology readings. Costar's combination of science, intelligence, and mysticism makes it a disruptive player in digital astrology.

 

Why Invest in Developing an App Like Costar? 

 

why invest in costar like astrology app
 

Digital astrology and wellness is a dynamic market, and there is a clear path for you to take when investing in the development of an app like Co–Star. Here are five good reasons to build an astrology app like Costar:

 

Demand for Personalized Wellness Content is Exploding 
 

The global wellness industry is worth more than $4.5 trillion. Ultimately, personalized astrology, social media, and self-care apps create huge opportunities in a fast-growing market. Customers want tools that connect them to their feelings, relationships, and personal growth. An app like Costar manufactures custom AI-powered hyper-personalized daily insights based on each user's Birth chart analysis.

 

High User Engagement and Retention
 

Types of astrologer apps have easily generated consistent usages with daily product checks. Comparative to other social apps, this leads to a much higher retention rate and allows developers to monetize through subscriptions, in-app purchases, and offer 'premium' content. With the right product user flow, aspects such as social compatibility, and mood tracking, users will become loyal to your astrology app. 

 

Viral Growth Through Social Sharing
 

Co–Star app grew exponentially due to their quirky and sharable horoscope messaging. It is not uncommon for many people to share their daily horoscopes with, at times, funny messaging via their social media profiles as thus acting as brand ambassadors. That type of virality can create exponential growth and lead to less marketing expenses. 

 

Scalable Monetization Models
 

There are multiple ways to monetize a astrology app, ranging from astrological compatibility reports and astrology master classes to advertising free apps. There are multiple things that create revenue streams for astrology apps, such as subscriptions, one-time purchases and also potential affiliate programs with wellness companies that have similar relevance as with astrology.

 

Rising Popularity Among Gen Z and Millennials
 

Astrology is currently very popular with younger generations. Generation Z and Millennials are leaning on astrology more and drawing solace, therefore they are a prime audience to develop a Co – Star like astrology app. By creating a product that is simple yet considered, you will be in line with their behaviors and values.

 

 

How Is Costar Different From Other Astrology Apps?


features of costar astrology app

 

Costar differentiates itself from existing astrology applications because of its different approach, use of technology, and emotional touchpoint for the user experience. Below are five ways that CoStar Astrology app development differentiates itself in a busy market:

 

1. AI + NASA-Backed Information for Accurate Readings
 

Most astrology applications rely solely on interpretations. Yet, Co–Star fuses real-time astronomical data from NASA with generative AI to develop hyper-personalized birth charts. From there, using AI in astrology apps' natural language generation, builds insights for the user each day that feel like they have been written for the user; this makes its accuracy more and relatability more effective.

 

2. Minimal, Yet Bold Design
 

Costar also presents a black-and-white interface, minimalist design, and an unadulterated approach to astrology; it presents astrology as modern and approachable. Additionally, the AI-driven CoStar astrology app is quite blunt, edgy, and poetic. It does exactly what astrology does not, it is genuine as opposed to filled with sugar-coating. This distinctly relatable tone has created an extremely loyal following, especially amongst millennials and Gen Z consumers.

 

3. Social Compatibility Features
 

One of the most unique elements of AI-driven CoStar astrology app offering is that it is social. Users can connect with friends in the programme, view their charts and most importantly be updated on their compatibility with others. Costar offers a relational approach to astrology that allows users to see how their star signs relate to their friends unlike 99% of competitors.

 

4. Push Notifications That Resonate
 

Known for its short and impactful notifications, the AI-driven CoStar astrology app sends daily notifications of short, emotionally-trending notifications that usually go viral on social media that are so deeply personal and intimate. Rather than surface-level, generic advice that you might find elsewhere, Co–Star will send users the reminder that since you just broke up with someone, "Don't reply just because you're bored."

 

5. Data-Personalization with Users
 

The ready-made astrology app similar to costar gathers user behaviors and preferences to adapt content to the user over time. Ensuring that the daily readings are both personal and relevant, personalization over time aids in user retention and differs it from astrology apps that produce static or repetitive content. 
 

 

Essential Features When Developing a Costar Clone App
 

Here is the list of features you need to consider if you want to build an astrology app like Costar:

 

1. Personalized Birth Chart Generation
 

Offer users to sign on, input their date, time and location of birth, to generate their own detailed natal birth charts. Will also have to push in correct astronomical data and create detail, as well as integrating natal birth charts for unique and personal data.

 

2. Real-Time NASA Data Integration
 

Make use of NASA's ephemeris system to provide real-time planetary locations in the ready-made astrology app similar to costar. Lock in daily planetary orbit calculations for their horoscopes and compatibility based on the current planetary alignment.

 

3. AI-generated Horoscope Notifications 
 

AI should generate emotionally connected daily notifications that feel personal and intimate. Use notification releases to ensure user engagement with deeply personal and intimate, emotionally connected, and relevant daily notifications to users of creative, poetic reminders based on their individualized user charts.

 

4. Friend Compatibility & Social Sharing
 

Enable users to connect with friends, compare natal charts, and view compatibility through an astrological service. Also, include fun, shareable pieces of information that promote social engagement and virality across platforms such as Instagram or TikTok. 

 

5. User Interface- Aesthetic and Minimalist
 

Create an intuitive and sleek black and white user interface that is minimalist in visuals. The cleanliness of the design enhances user experiences while building a brand identity similar to Costar's chic aesthetic. 

6. The Astrological Calendar
 

Provide a calendar of major astrological events, such as all retrogrades, lunar events, and eclipse events. Inform users how these celestial movements may affect moods, decisions, and relationships.

 

7. Built-in Astrology Glossary
 

Include a glossary that explains all astrological terms in-app. Enable users to tap to learn the meanings of components such as rising signs, houses, or aspects—allowing the app to be educational and beginner friendly.

 

8. Notification customization
 

Allow users to customize text notifications as to when and a tone when sending them messages. For example, "grounded advice" as well as "brutal truth." This allows for user discretion and controls engagement without negatively overwhelming users.

 

How To Build An App Like Costar?
 

Building a successful astrology app like Costar requires careful planning, expert development, and a plan to issue continuous improvements. When you partner with a professional astrology app development company, you will create a quality product that reflects your vision. There are usually five stages associated with building an app (depending on what type of app you are creating): 

 

1. Requirement Analysis and Planning 
 

The first stage is about understanding your app's goals, audiences and unique features. The mobile app development company usually partners with you to define core functionalities like the personalized horoscopes, birth chart generations, daily astrological updates, and the social sharing of astrological information. The outcome of this phase is a project roadmap and timeline that shows all parties are aligned about general expectations. 

 

2. UI/UX Design 
 

An engaging (visual) and intuitive design is vital to an astrology app, which typically depends on visuals and personalized data. This astrology app development company's goal is to create wireframes and prototypes that reflect either the slick and minimalist design of Costar or a unique theme that reflects your brand. The emphasis for the design begins with navigation, then visually appealing designs, and lastly, how easily users can use each feature, such as readings or compatibility checks.

 

3. App Development
 

Once the design is finalized, the hire software dedicated developers can now start building the app's front end and back end. This will include the integration of one or more astrological data scenario coding APIs, astrological data birth chart calculators, push notifications for daily updates, and a social aspect allowing users to connect with one another directly via the app if desired. The astrology app development company will make sure the app is scalable and secure and will work on iOS and Android platforms.

 

4. Testing and Quality Assurance
 

Testing is a comprehensive process to identify bugs and make changes and optimize performance to achieve a better user experience. The QA CoStar Astrology app development company team will test the app on a number of devices, under a number of different scenarios, in order to confirm the accuracy of the astrology calculations, the responsiveness of the UI, and the stability of the app.

 

5. Deployment and Maintenance
 

Last but not least is the stage to develop an astrology app like Costar, in which after the testing phase has been successful, the app will be deployed to the App Store and the Google Play store. The astrology app development company will also support your ongoing app with maintenance updates and user engagement activities to keep your app running smoothly and making your users happy.
 

By completing the stages with a trusted android app development company, you can develop a feature-rich, user-friendly app like Costar communicating with astrology users everywhere.

 

>>>>Also Read: How Much Does AstroTalk Like App Development Cost?


 

How Much Does It Cost to Create App like CoStar
 

Now that you know how to create an astrology app like Costar, you must go through its cost estimation. Creating an astrology app like Costar means combining real-time data integration and beautiful design with AI-based generated personalized content. The cost to develop an astrology app like Costar varies significantly, ranging anywhere from $15,000 to $49,000+, based on multiple key factors that sway total time, complexity, and resources.

 

1. Features & Functionality
 

The more advanced and customized the features, the higher the cost. Basic modules like birth chart generation, daily horoscopes, and compatibility with your friend's chart would be more affordable. If you add in the possible integration of AI content and social sharing, that increases the cost of developing an astrology app like Costar.

 

2. Research Real-time NASA Data
 

Research at NASA-JPL and using it's ephemeris is valuable information to create accurate planetary positions and adding real-time applications adds complexity and development effort depending on level of accuracy and priority of live synchronization.

 

3. UI / UX, Aesthetics
 

Costar has a cool minimalist design, and that is partially what makes the tool attractive to users. If you go for custom UI/UX with clean transitions, animation, and typography, it is an additional cost of costar app development, depending on whether you are mobile responsive or cross-platform.

 

4. One Platform, Either iOS or Android 
 

The cost of developing an astrology app is more affordale unless you expand to social platforms and other integrations. Using something like Flutter or React Native could help minimize the cost of developing an astrology app if you can get either native-type capability from the system. If you need to develop separately for both platforms, expect an increase.

 

5. AI Content Solution
 

To enhance user experience and provide personalized content with astrological predictions you are going to have to take steps in automating either NLG or to include focused tone controls from the AI module. This would add considerable complexity, especially given the data risk. 
 

In conclusion, the total development of an astrology app like CoStar depends on your vision, basic MVPs start around $10,000, while fully loaded, AI-enhanced astrology apps can exceed $49,000+.

 


 

IMG Global Infotech, Your Trusted Partner for Astrology App Development

 

At IMG Global Infotech, we know a thing or two about developing innovative horoscope and astrology apps for modern-day users. With more than 10 years of mobile development experience, we partner technology with real-time data and design to develop user-friendly astrology applications tailored to personal needs and specifications. From horoscope check-ins to astrological predictions powered by AI, we've got you covered! We take pride in being timely, secure, and efficient - making us your go-to partner for astrology app development services that bring your ideas for a quality app to life. Let's develop your celestial dreams together! 

  

To Summarize

 

Building an astrology app like Costar is a combination of intuitive design, real-time data advanced data integration, and AI-backed customization. With the increase in popularity of astrological horoscopes and cosmic insight, there is no better time to invest in a CoStar Astrology app development in this niche. Getting the right app development company can help position your idea of an engaging, feature-rich, and scalable hair app that meets the demands of today's astrology consumer. The stars are aligned, so let's start building today!

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Neeraj Rajput
Written by
Neeraj Rajput

Neeraj Rajput  is the co-founder of a leading IT company with over a decade of experience in technology consulting, product development, and digital transformation. With a passion for solving complex business challenges through smart tech solutions, he shares insights on innovation, leadership, and the evolving IT landscape

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