What "silent costs" are quietly eroding the profits of game studios?

For many game and app studios, growth is often viewed through a few familiar metrics: CPI, ROAS, retention, cohort revenue, or new downloads. However, in reality, even when user acquisition is going well, profits can still be eroded by less visible cost layers.

These are “silent costs” that aren’t always immediately apparent on the marketing dashboard, but directly impact margin, capital turnover, and scalability. In other words: acquiring new users is only the first step. Maintaining profit margins after growth is the more difficult challenge.

In the context of the Vietnamese game and app industry, which continues to grow strongly but simultaneously faces high user acquisition costs, low retention, complex international payment processes, and unfavorable exchange rates, reviewing these hidden costs is more necessary than ever.

Silent Cost #1: Acquiring Users But Not Retaining Them Long Enough This is perhaps the biggest "hidden cost," but also the easiest to normalize.

A campaign might still be bringing in installs or even good short-term ROAS. But if the new user base doesn't stay long enough, doesn't reach key activation milestones, or doesn't convert to payers as expected, then the initial UA budget is practically dwindling day by day.

The problem here is that many teams still optimize based on signals too early:

Good CPI but weak D7 retention Good short-term ROAS but insufficient LTV to cover long-term operating costs Increased volume but decreased cohort quality Creative scaling but not resulting in improved user quality

In this case, the loss isn't due to a lack of users, but rather the studio acquiring users who don't generate sufficient sustainable value. This type of cost is hard to see because it doesn't appear as a clear line item, but it silently drags down the effectiveness of the entire funnel after UA. Silent Cost #2: Trial and Error Costs In a highly competitive environment, creative fatigue sets in quickly. To maintain growth, the team must constantly produce, test, and refresh advertising content. If the creative process isn't good enough, studios often fall into one of three situations: A sharp increase in creative output but no corresponding increase in insight quality High production costs but a slow testing cycle Many content variations but no truly effective conversion patterns are identified In that case, the cost isn't just in ad spend, but also in the time of the growth, design, and BI teams, and missed opportunities due to slow market response. For many studios, this is a very real loss but is rarely accounted for as part of the expanded CAC. Silent Cost #3: Failed Payments and Monetization Friction Many studios think that after attracting users to their game or app, the hardest part is over. But in reality, there are many gaps between a user's intention to pay and the actual successful transaction.

A suboptimal checkout, limited payment methods, inadequate verification, or a low approval rate can all lead to lost revenue that the team may not immediately realize. This is a silent cost because the product may still have payer intent, but the actual revenue received is lower than its potential.

For models aiming to push IAP or hybrid monetization, this is a particularly important cost layer. Optimizing the payment flow can reduce 15–30% abandonment at the checkout step and increase the approval rate by 5–10% when a suitable payment infrastructure is in place.

In short: each failed transaction is not just a loss of revenue. It also distorts payer behavior data, slows down the monetization team's learning speed, and reduces the effectiveness of the entire budget spent on acquiring users.

Silent Cost #4: Fraud, Chargebacks, and Refunds Not Fully Accounted for in Unit Economics As studios scale to more markets, especially with direct pay-in or hybrid monetization models, the risk of fraud and disputes also increases.

If you only look at gross revenue without deducting chargebacks, refunds, transaction disputes, operational support costs, and internal processing time, the team can easily overestimate the actual profit margin.

Many studios find themselves in a situation where revenue appears to be increasing on the surface, but the net margin is shrinking because:

The dispute rate increases when expanding to new markets The team has to manually process many refunds or failed collections

Fraud rules haven't kept pace with the scaling speed Data between product, finance, and payment systems is not interconnected

This is why fraud and disputes shouldn't be seen solely as a risk team issue. For a growing studio, it's part of the margin strategy.

Silent Cost #5: FX fees and currency conversions are eroding profit margins every day. This is a very familiar expense for global studios, but it's often underestimated because it doesn't feel as painful immediately as media spend.

A studio can:

Collect money in one currency Run ads in another currency Pay vendors, creators, affiliates, or operating partners in many more currencies

Each conversion means money goes through multiple layers of intermediaries, each time it has to settle and then be released.

I just made another payment, and the margin is being eroded a little more.

If you look at each transaction individually, the number might not be too large. But cumulatively over months, across multiple campaigns, markets, and legal entities, this could be a significant loss.

In Vietnam Gaming Outlook 2025, Airwallex offers a very realistic perspective: simply optimizing the margin infrastructure such as multi-currency, tax compliance, and native refunds can help studios save about 1–3% of FX costs in some suitable models. For teams operating at a large scale, this 1–3% is not insignificant. Silent cost #6: Payout delays and cash flow lag slow down the team Another often overlooked silent cost is the cost of delays.

From an accounting perspective, the studio may have "recorded revenue." But operationally, if money comes in slowly, payouts are delayed, or there's a need to wait for settlements across multiple systems, the team loses flexibility in making crucial decisions:

Injecting additional budget into a successful campaign Paying vendors or partners quickly Reinvesting in creative, testing, or live operations at the right time Proactively balancing cash flow across multiple markets

When money doesn't flow fast enough, the actual growth rate slows down. This is a type of opportunity cost that's difficult to see in regular financial reports, but it directly impacts the studio's scalability.

Silent cost #7: Manual reconciliation is taking more time than the team realizes Many studios not only spend money on transaction fees, but also on the human effort required to "patch" fragmented systems.

When money comes in from the app store, ad network, web payment, partners, or multiple markets, but the data isn't on a unified flow, the finance and operations teams have to spend a lot of time on:

Reconciling revenue across multiple platforms Checking which accounts have settled and which are pending Combining payout, FX, and collection data Creating internal reports for growth, finance, and founders

This is rarely called a “growth cost,” but it's actually consuming a lot of the team's bandwidth. And as they scale, the complexity increases faster than the number of people who can handle it.

In many cases, studios don't lack growth opportunities. They lack a lean enough operational infrastructure to avoid being bogged down in reconciliation, approval flows, and manual processing. Silent cost #8: Tool sprawl slows down and distorts growth decisions When growth, finance, BI, CRM, payments, and operations use separate systems, studios easily fall into a state of “enough data, but lacking the truth.”

Each team has a different dashboard. Each source has a different logic for recording revenue. The result is:

Growth sees the campaign is effective, but finance doesn't see the actual cash flow received. Product sees increased payers, but operations see increased refunds and support tickets. Founders see revenue going up, but don't understand why the margin isn't improving.

The costs here aren't just software costs. They're the costs of slow decisions, wrong decisions, or decisions based on mismatched data.

Why are these silent costs more dangerous than you think?

The danger of silent costs is that they rarely appear simultaneously on a single dashboard.

The media team sees CAC. The finance team sees fees. The operations team sees workload. The product team sees conversions.

But the studio's actual profit lies at the intersection of all those layers.

Therefore, there are times when the studio's growth looks great at the top of the funnel, but behind the scenes, there are many small "leaks":

Insufficiently high-quality users Suboptimal conversion to payers Failed or disputed transactions Fraud and payouts thinning the margin The operations team spends too much time on manual processes

Each leak point only loses a small portion. But collectively, they can determine whether the studio is scaling effectively or just growing under pressure. Where should the studio start looking back?

Instead of just asking "how many users did we acquire this month?", perhaps the studio should add a few more questions:

What percentage of potential revenue is lost in the payment process?

What is the actual net margin remaining after FX, payouts, refunds, and disputes?

How many hours per month is the team spending on reconciliation and manual processing?

Is the cash flow turnover rate slowing down growth decisions? Does the current system make scaling easier, or is it forcing the team to add more people to patch operations?

This is where the growth problem is no longer just about buying more users, but about building a robust operational platform where each new user brings more real value. When does Airwallex become part of the solution?

Not all silent costs can be solved with a financial tool. Issues like retention, creative strategy, and product-market fit still need to be addressed by the studio at the product and growth level.

But when the studio reaches the stage of:

running UA in multiple markets collecting money from multiple platforms or currencies needing payouts to cross-border vendors, partners, or creators starting to see margins thinning due to FX, settlement delays, or reconciliation workloads

then the financial and payment infrastructure begins to have a direct impact.

Next comes growth efficiency.

This is also why Airwallex is positioning itself in the game and app ecosystem not just in payment, but in a broader growth operation: from supporting revenue collection, handling multiple currencies, optimizing FX for ads and operations, to payouts and reducing the complexity of reconciliation.

Simply put: after acquiring users, studios still need a sufficiently robust infrastructure to ensure faster revenue flow, more efficient spending, and prevent teams from being tied up in manual financial tasks.

Conclusion Acquiring users is always a crucial part of growth. But for game and app studios aiming for long-term success, profitability isn't solely determined by the cost of acquiring users, but also by the hidden costs that follow.

From churn, creative fatigue, failed payments, fraud, FX, payout delays, to manual reconciliation, each "silent cost" can be a small leak point. And when multiple loopholes exist, they erode the studio's ability to scale sustainably much faster than many people realize.

Therefore, the question to ask is not just "how to acquire more users?", but also "after acquiring them, how much real value does the studio retain?"

That's where profit margins are protected — or lost.

Terminology Index Some concepts mentioned in the article, briefly explained for reference: Types of silent costs Churn: the percentage of users who leave a product after a certain period of time. High churn means users don't stay long enough, resulting in wasted budget spent on acquiring them. Failed payments: failed payment transactions, for example, due to rejected cards, authentication errors, or suboptimal checkout processes. This is the revenue lost even though the user intended to pay. FX (foreign exchange): the conversion between different currencies. Each currency exchange typically incurs fees and exchange rate differences, silently eroding profit margins as studios receive and disburse funds in multiple currencies.

Payout delay: the delay in funds actually arriving in the account or being disbursed to vendors, partners, or creators. Delayed funds reduce the ability to make quick decisions and manage cash flow.

Fraud: fraudulent transactions, for example, using stolen cards or making false claims. Fraud entails chargebacks, refunds, and processing fees, thinning net profit.

Reconciliation: the process of checking and matching incoming and outgoing funds across multiple platforms, accounts, and markets. When done manually, this is a very time-consuming task for the finance and operations team.

Growth and Financial Metrics

CPI (Cost Per Install): the average cost per app install. A low CPI is considered cheap, but if users don't stay, it can still result in losses. CAC (Customer Acquisition Cost): The cost of acquiring a truly valuable customer, including advertising costs, creative expenses, and team time; therefore, it's broader than CPI.

ROAS (Return On Ad Spend): The ratio of revenue earned to the amount spent on advertising. For example, an ROAS of 150% means that for every dollar spent, 1.5 dollars are earned back.

Retention: The percentage of users who return to use the product after a certain period.

D7/D90 Retention: Retention on the 7th or 90th day after installation. A weak D7 means users leave very quickly, even within the first week.

Cohort: A group of users grouped together at the same time (e.g., those who installed in the same month), used to compare user quality between different groups.

LTV (Lifetime Value): The total value a user brings throughout their lifetime. The principle of sustainability is that LTV must be greater than CAC.

Payer/Payer Conversion: The percentage of users who convert into paying customers. A large user base but few payers results in low revenue.

IAP (In-App Purchase): Revenue from purchases within the app, such as items or upgrade packages.

Hybrid monetization: A model combining multiple revenue sources, usually in-app advertising (IAA) plus IAPs.

Abandon rate: The percentage of users who abandon the payment process.

Approval rate: The percentage of transactions successfully approved. A higher approval rate means fewer transactions are rejected.

Gross revenue: Gross revenue, the face value before deducting expenses.

Net margin: The remaining amount after deducting all expenses such as FX, payout, refunds, and disputes, reflecting how much profit the studio actually makes.

Chargeback: A transaction that is disputed by a customer and reversed by the bank; the studio loses revenue and may incur additional fees.

Refund: A refund given to a customer.

Dispute: A transaction dispute in general. Unit economics: a profit/loss calculation per unit (one user or one transaction), helping to assess whether the studio is truly profitable after deducting all hidden costs.