Valuing a mobile app starts with the same foundation as any small business, profit times a multiple, but apps carry extra risks that push multiples down. A website you own outright is yours; an app lives inside Apple and Google's stores, under their rules, fees, and review decisions. Buyers discount for that dependency, and sellers who ignore it tend to overprice. A realistic valuation accounts for both the earnings and the platform risk.

Begin with seller's discretionary earnings, the profit left after adding back the owner's salary and one-off costs. For small apps, buyers commonly apply a multiple of annual earnings, often lower than for SaaS businesses of similar size, because app revenue can be volatile and store policies change. Growth rate, revenue concentration, and how much of the income is subscription versus one-time purchase all move the multiple up or down. A stable subscription app with low churn commands more than a one-hit game living off a fading trend.

Dig into the metrics behind the earnings. Monthly active users, retention curves, churn, average revenue per user, and store ratings tell you whether the app is healthy or coasting. Check update history too: an app untouched for a year may need urgent work to stay compatible with new operating systems, and that future cost belongs in your valuation. Also review the app's dependence on paid ads for downloads, since an app that only grows while ads run is really buying its revenue.

Red flags specific to apps deserve a dedicated pass. Watch for apps that rely on a single keyword ranking, apps with unresolved intellectual property questions, apps using third-party software with expiring licenses, and apps whose reviews mention crashes or broken features. Ask for store console access to verify downloads and revenue directly, and check whether the developer account, signing keys, and push notification certificates will transfer cleanly.

Finally, price the work you will inherit. Estimate the cost of the next year of maintenance, updates, and support, and subtract anything the seller has deferred. An app valued purely on last year's profit, without a maintenance budget, is overvalued by exactly the amount of that deferred work. Buyers who do this math calmly, and walk away when the numbers fail, are the ones who end up owning apps that actually pay.

Remember that Apple and Google take a commission on most in-app purchases and subscriptions, commonly 30 percent for larger developers and 15 percent for smaller ones under small-business programs. A buyer who values an app on gross revenue without subtracting store fees will overpay by nearly a third, so always work from net revenue after store commissions, payment processing, and refunds. Also check whether the app's pricing or subscription terms will change under new store policies, since a forced price or commission change after purchase can rewrite the entire valuation overnight.

Technical debt is the hidden cost inside many small apps: outdated libraries, unsupported frameworks, code only the original developer understands, and features held together by workarounds. Before buying, ask for a code walkthrough or pay a developer for a few hours to review the repository, the crash reports, and the update history. An app that needs a full rebuild within a year is worth far less than its profit suggests, while a clean, documented codebase with automated tests is worth a premium, because it lets a new owner maintain and grow the product without first paying to fix it.

Good valuation needs comparable sales, and app marketplaces publish enough data to anchor your multiple. Browse recent sales of apps with similar revenue, growth, and business models, and note how multiples differ between subscription apps, ad-supported apps, and one-time purchase apps. Be wary of asking prices, which reflect seller hopes, and weight completed sales more heavily. If you cannot find close comparables, widen the net to small SaaS businesses, then discount for app-specific risks like store dependency and update burden, and document your reasoning so your offer reads as serious rather than arbitrary.