iGaming App Development
Development+ 9 years in the game
+ 60+ iGaming projects
Mobile app development services
Sportsbook apps
for operators
Pre-match and live betting with real-time odds, a persistent bet slip, bet history and account pages, connected to your sportsbook platform or to a provider’s sportsbook through its SDK or APIs. We also build pari-mutuel and social betting apps.
Casino apps
for operators
A casino lobby with slots, table games, live casino and crash games from your platform’s casino module, plus jackpots, wallet and transaction history, also for social casino apps with a virtual currency store. We agree how each game type reaches the app under marketplace rules before the build.
White-label apps
for providers
For platform providers: one app codebase that your operators launch under their own brands, with branding and features configured per operator and market. A second product on the same platform and markets, such as a casino app next to a sportsbook, can reuse the account, wallet and geolocation components of the first.
What we commit to
An honest build path If mobile web, a wrapper or a hybrid app covers your case, we tell you before you pay for native.
Ownership defined in the contract Bespoke code and IP are transferred to you, reusable CrustLab components come with a perpetual license and modification rights, and third-party SDKs and platforms stay on their own terms.
A takeover audit that can say no Before we take over an existing app, a code quality check comes first, and it can return a red light.
What we will never promise
App Store or Google Play approval We prepare the app and handle review feedback; approval stays with Apple and Google, and licenses with the operator.
Retention, revenue or conversion uplift We build the app and its engagement features; you run the business.
Regulatory or certification outcomes We implement the agreed technical requirements; approvals and assessments sit with the relevant regulators and testing bodies.
A launch date or price before the Discovery Sprint Timeline and cost come out of the agreed scope, not a feature list.
Choosing a mobile app development company for real-money apps
Native, Flutter or hybrid build
Custom mobile app development starts with the technology choice: custom native apps in Swift and Kotlin, Flutter as our preferred cross-platform path, or a hybrid app with a native or Flutter core that embeds your web sportsbook or casino. We match the path to your platform and budget, from a light wrapper to an advanced native app, and if a lighter path covers your case, we say so.
Store and jurisdiction review
We prepare real-money apps for App Store and Google Play review, using checklists for the agreed target markets. We coordinate submission through the appropriate developer account, while the operator supplies the required licenses and permissions and approval stays with Apple, Google and the relevant regulators.
Testing on real devices
Releases are tested on the device farm in our office, against the iOS and Android phones, tablets and system versions agreed for your audience, before anything reaches store review.
Foundations from past releases
Push notifications, splash screens, navigation, and screen and event handling for your analytics come ready from apps we have already released, so your budget goes into the UI and the integrations that set your app apart.
Casino and betting app features we build around your platform’s APIs
Accounts, KYC & geolocation
Push and in-app messaging
Payments and player limits
Your own experience layer
System features for engagement
Multi-state launches in the US
Case studies
OlyBet Sportsbook & Casino Mobile App
White-label Mobile Sportsbook Apps
KTO's Sportsbook and Casino Mobile App
50+ startups and enterprises trusted CrustLab since 2017
iOS, Android and Flutter app development
Native iOS and Android apps
iOS app development in Swift and Android app development in Kotlin, with direct access to platform APIs, biometrics, Live Activities and device SDKs such as geolocation. Native makes sense when the app is your main channel and your budget supports two codebases.
Flutter cross-platform apps
Our preferred cross-platform path: one Flutter codebase for iOS and Android, with native modules where a feature needs them. It makes sense when you want one team and one roadmap across both platforms, with a custom interface and access to native capabilities.
Hybrid apps with web content
A native or Flutter core that embeds your web sportsbook or casino on selected screens, from a light wrapper to an app with native navigation, sessions and biometrics. It makes sense when the budget or the platform calls for it, and we scope the app-specific features and refine the web UI with the app.
Integrations in our apps
Integrated in our apps to date: sportsbook SDKs such as Kambi’s, GeoComply geolocation, biometric KYC, PIX payments, Smart ID login, XtremePush and Optimove for CRM messaging, plus crash reporting and app analytics.
Our mobile app development process
FAQ
Should we choose native app development, Flutter or a hybrid app?
It depends on your product requirements, platform and budget. Native Swift and Kotlin provide direct access to platform APIs; Flutter shares application code across iOS and Android and can integrate native modules. Either approach can embed selected web journeys. Apple’s guideline 4.2 calls for functionality and an experience beyond a repackaged website, so we plan the app’s added value together with its web UI. We built SunBet’s live app in Flutter.
Can you build an app on our current platform and a provider's sportsbook?
Yes, on third-party and proprietary platforms alike. OlyBet’s app runs on the operator’s own platform, while the white-label sportsbook apps we built for Strive Gaming integrate Kambi through an SDK, and its casino apps reuse the same components. Where a provider’s sportsbook or casino stays embedded from the web, we design the native layer around it, within the APIs and agreements your provider offers.
How do you get a real-money app through App Store and Google Play review?
We plan store eligibility and technical requirements from the first sprint, including geo-restrictions under Apple’s guideline 5.3.4 and Google Play’s real-money policy, and market-specific player controls. The operator provides the required licenses and permissions; we coordinate the submission with the operator through the appropriate developer account and handle review feedback. None of our submissions has been rejected to date. Store approval stays with Apple and Google, and regulatory approvals remain with the relevant authorities.
How do geolocation, KYC and payment integrations work inside the app?
We integrate the providers you choose, as SDKs in the app or through your platform, and build the player-facing flows around them: location checks before a bet, identity verification when players register, payments, deposit limits and self-exclusion. Your compliance team defines the requirements, and your platform and providers supply the relevant checks and decisions. We implement the app-side controls and integrations needed to apply them correctly. In KTO’s app for Brazil, this meant biometric KYC, geolocation, betting limits and PIX payments.
What drives the timeline and cost of mobile app development?
Six factors: the build path (wrapper, hybrid, Flutter or native), the native features in scope, the state of your platform’s APIs and web UI, the integrations, the number of jurisdictions and store submissions, and the design work. CrustLab estimates after the Discovery Sprint, when the scope is set, rather than from a feature list.
Who is the owner of the app's code?
You are, for everything built for you: bespoke code and IP are transferred to you under the contract. Reusable CrustLab components, such as our app foundations, come with a perpetual license and modification rights. Third-party SDKs, platforms and services stay on their own terms.
What is not included in a mobile app engagement?
Licenses and approvals: we prepare the app and its submission, while licenses stay with the operator and approvals with Apple, Google and the regulators. Geolocation, KYC and payment services come from providers you choose, and we integrate them. We do not sell a ready-made app from a catalog, run user acquisition or app store optimization, or rent mobile developers by the hour: a bespoke squad builds and maintains your app within an agreed scope.
- CrustLab
- Mobile App Development
