Indie Developer

App Store Optimization (ASO) is the process of improving the visibility and conversion rate of a mobile app within app store search results and browse pages. ASO encompasses keyword research and optimization of app metadata — including the app title, subtitle, keyword field, and description — as well as optimizing visual assets like the app icon, screenshots, and preview videos. The goal is to increase organic discovery so that more users find and install the app without paid advertising. ASO also includes ongoing efforts like localizing listings for different markets, encouraging positive reviews, and monitoring category rankings. For subscription apps, ASO directly impacts customer acquisition cost (CAC), since higher organic visibility means a greater share of installs come at zero marginal cost. Effective ASO requires treating the app store listing like a conversion funnel: first capturing impressions through keyword relevance, then converting those impressions into page views through compelling icons and titles, and finally converting page views into installs through persuasive screenshots, descriptions, and social proof.

A platform fee (commonly called the "Apple tax" or "Google tax") is the commission that app store platforms charge on in-app purchases and subscriptions processed through their billing systems. Apple charges 30% on most transactions through the App Store, reduced to 15% for developers earning less than $1 million annually through the App Store Small Business Program, and 15% on all subscription renewals after the first year. Google Play charges 15% on subscription revenue and 15% on the first $1 million of non-subscription revenue, with 30% above that threshold. These platform fees have a profound impact on the unit economics of subscription apps. On a $9.99/month subscription, Apple's 30% first-year commission means the developer nets only $6.99 — and $8.49 after the rate drops to 15% in year two. This fee structure has driven significant industry interest in alternative billing mechanisms, including web-based checkout flows that process payments outside the app store ecosystem. Regulatory actions worldwide — including the EU Digital Markets Act, Japan's TPSA guidelines, and court rulings in multiple jurisdictions — are gradually expanding developers' ability to offer alternative payment options and communicate pricing outside the app, creating opportunities for meaningful margin improvement.

The amount spent for each newly-acquired mobile app user over a given time period. Customer Acquisition Cost (CAC) for mobile apps refers to the cost that a business incurs to acquire a new user for their mobile application over a specific period of time. In other words, it is the amount of money spent to attract a user to download and install a mobile app on their device. Whether you are just embarking on your journey or navigating quite a while to create a successful mobile app, the Customer Acquisition Cost (CAC) must be at the forefront of your mind.

Flutter is a freely available framework developed by Google that enables the creation of cross-platform applications that are natively compiled using a single codebase. Using Dart – a Flutter coding language, Flutter facilitates the development of applications for both Android and iOS devices.

A hybrid app is a type of mobile application that combines elements of both native and web apps. It is built using web technologies like HTML, CSS, and JavaScript, but is wrapped in a native container that allows it to be installed from app stores and access device-specific features like push notifications, camera, and GPS.