How app monetisation works (And what it costs)

The modern mobile ecosystem is vast. Between the Apple App Store and Google Play, there are now more than four million apps competing for attention, with roughly 96% of them available for free download.

That statistic alone reveals something important about the economics of apps. The overwhelming majority of successful products do not rely on paid downloads. Instead, they rely on models that allow users to try the product first and pay later if they find value in it.

This approach, often referred to as the freemium model, now dominates the ecosystem. In fact, around 98% of global mobile app revenue is generated by freemium apps, where the core experience is free but additional functionality or services are monetised over time.

Yet even with these models in place, turning an app into a meaningful revenue stream is far from guaranteed. Data from subscription management platform RevenueCat suggests that over 80% of subscription-based apps fail to generate more than $1,000 per month within their first two years.

This disparity highlights an important truth about mobile products. Monetisation is rarely just about the revenue mechanic itself. It is the result of a complex combination of product design, retention strategy, pricing psychology, and operational infrastructure.

Before exploring the mechanics behind each approach, it helps to understand the main monetisation models used across the app industry today:

• Subscriptions - recurring payments for ongoing access to services or content.
• In-app purchases - one-off payments for digital items, features, or upgrades.
• Advertising - revenue generated from displaying adverts within the product experience.
• Transaction commissions - taking a percentage of transactions completed through the platform.
• Freemium upgrades - offering a free core product with optional paid enhancements.

Before any discussion about monetisation models begins, product owners need to understand one of the most significant structural realities of the app ecosystem: platform fees.

Both Apple and Google operate marketplace ecosystems where apps are distributed, discovered, and installed. In exchange for that access to billions of devices, they charge commission on certain types of transactions that occur inside apps.

For digital goods and services purchased through an app, the standard commission structure is typically around 30% of the transaction value, although reduced rates exist for smaller developers or long-term subscriptions.

This means that if a user pays £10 for a digital service through an in-app purchase, the developer does not receive the full amount. A portion of that payment is retained by the platform before the remainder reaches the product owner.

These commissions are not a small operational detail; they fundamentally shape the economics of digital products.

Many teams discover this only after their pricing strategy has already been defined. A subscription that seems commercially viable on paper may suddenly look very different once a platform commission, payment processing costs, and tax obligations are factored into the equation.

The rules surrounding these payments are also strict. If a purchase relates to digital goods or digital functionality within the app, it typically must use the platform’s own billing system. Attempting to route those payments elsewhere can lead to rejection during the app review process.

Some of the most important rules product owners should understand include:

• Digital goods purchased inside an app must typically use the platform’s in-app purchase system.
• Platform commissions apply to most digital transactions processed through the app.
• Subscription pricing and renewal terms must be clearly communicated to users.
• Apps can be rejected during review if monetisation flows do not comply with store guidelines.

For physical goods, services, or real-world bookings, the rules are different and external payment providers are usually permitted. This distinction becomes particularly important for products operating in sectors such as travel, retail, or services.

Over the past decade, subscriptions have become one of the dominant monetisation models in the mobile ecosystem. They offer something that many businesses value highly: predictable recurring revenue. Rather than relying on one-off transactions, subscriptions create ongoing relationships between products and their users.

The scale of this model is substantial. Global app subscription revenue reached $66.8 billion in 2024, making it one of the fastest-growing segments of the mobile economy.

However, subscriptions introduce a level of product and operational complexity that many teams underestimate.

From a technical perspective, subscription systems must handle a wide range of scenarios. Users may start free trials, upgrade between pricing tiers, downgrade plans, cancel subscriptions, or experience failed payments when cards expire. Each of these events needs to be handled gracefully within the product experience.

Beyond the technical mechanics, the real challenge lies in product value. Subscriptions only work when users feel the product continues to deliver ongoing benefit. A one-time feature set rarely sustains recurring payments.

This is why many successful subscription apps focus on experiences that integrate into daily habits. Health and fitness platforms, productivity tools, streaming services, and increasingly AI-powered products all rely on continuous engagement rather than one-off interactions.

Even then, success is far from guaranteed. Subscription apps represent a relatively small percentage of the total number of apps available, yet they generate a disproportionate share of revenue. This imbalance means that while the model can be powerful, the gap between successful products and struggling ones is extremely wide.

Another common monetisation strategy involves selling digital items, upgrades, or feature unlocks directly within the product. This model has been widely adopted across gaming, creative tools, and utility apps, where users may want to enhance their experience incrementally rather than committing to a full subscription.

In mobile gaming in particular, in-app purchases have driven enormous revenue. Some of the world’s most successful games have generated tens of billions of dollars through the sale of virtual items and in-game upgrades.

Yet the mechanics behind this model extend far beyond simply adding a purchase button.

Products that rely on in-app purchases need carefully designed pricing structures, clear communication around what users receive for their purchase, and safeguards to prevent frustration around accidental spending or unclear value.

From a technical perspective, the purchase infrastructure must support features such as restoring purchases across devices, handling refunds, validating receipts, and preventing fraud. In other words, the monetisation layer becomes a core part of the product architecture rather than an optional add-on.

Advertising is often seen as the simplest path to revenue. If an app attracts enough users, the thinking goes, displaying adverts should naturally generate income. In practice, advertising revenue depends heavily on scale.

Advertising typically pays based on impressions or engagement with ads, often measured in terms such as eCPM (effective cost per thousand impressions). Across many categories, typical eCPM values fall somewhere between $5 and $10 per thousand impressions, meaning that significant traffic is required before revenue becomes meaningful.

This model works best for products that generate frequent daily usage or large audiences. Social platforms, entertainment apps, and casual games often fit this profile.

However, advertising also introduces trade-offs around user experience. Poorly implemented adverts can disrupt core interactions, slow down performance, or reduce perceived product quality.

The challenge, therefore, becomes balancing monetisation with experience. Successful products tend to integrate advertising in ways that feel natural or optional, such as rewarded ads that allow users to unlock features or content voluntarily.

Some apps monetise through a different approach altogether by acting as platforms that facilitate transactions between users and services. Travel booking apps, marketplaces, delivery platforms, and service marketplaces often generate revenue by taking a percentage of each transaction that flows through the product. In these cases, the app itself becomes the infrastructure connecting supply and demand.

While this model can scale effectively once transaction volume increases, it also introduces a different set of operational challenges. Payment processing infrastructure, fraud prevention systems, dispute resolution processes, and compliance with financial regulations all become part of the product’s operational ecosystem.

Payment providers also introduce their own costs. Card processing fees alone typically range from around 2% to 3% per transaction, before any platform commissions or additional infrastructure costs are considered.

For product owners, the key consideration is that marketplace models rarely function purely as software products. They are usually platforms that require operational systems, customer support processes, and ongoing management of both sides of the marketplace.

One of the clearest trends emerging across the app industry is the shift towards hybrid monetisation models. Rather than relying on a single revenue stream, many successful apps now combine several approaches simultaneously. Subscriptions may coexist with in-app purchases, while advertising provides an additional revenue layer for users who prefer not to pay directly.

Industry data suggests this approach is becoming increasingly common. Around 35% of apps now combine subscriptions with additional purchases or other revenue streams, while hybrid models have been shown to increase lifetime user value compared with relying on a single strategy alone.

This reflects a broader understanding that different users have different monetisation preferences. Some are happy to subscribe, others prefer occasional purchases, and many prefer a free experience supported by advertising.

Designing products that can accommodate these different behaviours often leads to more sustainable revenue models.

While revenue models are often the most visible aspect of monetisation, many of the real costs lie behind the scenes, such as:

• Payment infrastructure - integrating billing systems, handling failed transactions, and managing subscription logic.
• Revenue analytics - tracking conversion rates, churn, lifetime value, and revenue per user.
• Customer support - resolving refunds, subscription cancellations, and payment disputes.
• Compliance and taxation - managing regional tax rules and digital commerce regulations.
• Fraud prevention - protecting payment systems from abuse or unauthorised purchases.

Analytics infrastructure is one of the most important but frequently overlooked components. Monetisation strategies rely on understanding metrics such as conversion rates, churn, lifetime value, and revenue per user. Without reliable data, optimising a monetisation strategy becomes almost impossible.

Customer support is another hidden cost. As soon as payments are introduced, users will inevitably encounter issues with failed transactions, refunds, subscription cancellations, or billing confusion. Supporting these scenarios requires both technical systems and operational processes.

Compliance also becomes increasingly important. Different regions have varying rules around digital taxation, consumer protection, and data privacy. Products that operate internationally must navigate these regulations carefully to avoid legal complications.

In other words, monetisation is rarely just a technical feature. It is an operational system that touches multiple aspects of a product and business.

Perhaps the most important lesson in mobile monetisation is that revenue rarely succeeds when it is added at the end of the product development process.

The most successful apps treat monetisation as part of the product design itself. The experience, the pricing model, and the value delivered to users are all aligned from the outset.

This approach requires thinking about questions such as when users first experience value within the product, how that value evolves over time, and at what point it becomes reasonable to ask users to pay.

Apps that handle this well often feel effortless from a user perspective. The monetisation mechanics exist, but they do not interrupt the experience or undermine the product’s usefulness.

For product owners, the most important takeaway is that monetisation is not simply a financial decision. It is a product design challenge.

The mechanics of payments, subscriptions, advertising, and transactions are only one part of the equation. The real challenge lies in aligning those mechanics with genuine user value and sustainable product engagement.

When those elements work together, monetisation becomes a natural outcome of the product experience rather than something forced onto it.

And in a market where millions of apps compete for attention but only a small fraction generate meaningful revenue, that alignment often makes the difference between a product that simply exists in the app stores and one that becomes a sustainable business.