Mobile app code audit companies review existing iOS, Android, and cross-platform applications to identify technical debt, architecture problems, security risks, performance bottlenecks, and development blockers. The providers below offer different combinations of source code review, architecture assessment, security analysis, performance testing, and remediation planning for teams that need a clearer picture of an existing app.
Gilzor provides fixed-price audits for published iOS and Android applications, combining codebase analysis with a broader assessment of product and technical health. Its technical review covers architecture, technical debt, dependency risks, deprecated SDKs, performance bottlenecks, security flags, crash patterns, compatibility issues, and build pipeline risks. The company also examines critical user flows and app-store signals, which makes the service relevant when recurring bugs or release problems may have several underlying causes. Audit findings are delivered with prioritized recommendations, technical rationale, and effort ranges that can be used by Gilzor, an internal team, or another development vendor.
LeanCode offers several audit formats specifically for mobile products, including technical code audits, mobile security audits, discovery audits, migration audits, and onboarding audits. Its technical review examines code quality and system architecture, while security-focused engagements look for vulnerabilities and risks in the application code. The company also reviews scalability and maintainability when teams are preparing to onboard new developers or migrate an app to another technology. LeanCode offers separate audit options for smaller MVPs, large codebases, and security-sensitive applications, with final reports built around findings and recommendations rather than automated scan results alone.
Holdapp treats code auditing as a detailed technical analysis of an existing application rather than a simple static scan. Its process includes manual source code review, project structure analysis, database and mobile application assessment, data-flow examination, static and dynamic code analysis, and checks for technical debt and security problems. The company also reviews project documentation, external integrations, and the software release process. The resulting report categorizes detected problems by importance and provides recovery recommendations, making the service relevant for apps experiencing growing bug counts, slow releases, poor performance, or uncertainty before another development team takes over.
Itexus includes code review and refactoring within its Project Audit and Rescue service. The company assesses software architecture, code quality, security, stability, performance, documentation, cloud infrastructure, and development processes before creating a recovery plan. Its portfolio also includes a technical audit of an application built with Flutter and Node.js, while the wider company develops native and cross-platform mobile products for fintech and other industries. This combination can suit organizations that need an audit followed by refactoring, modernization, or continued engineering.
Tapptitude has a dedicated code audit service covering iOS, Android, cross-platform, backend, web, and infrastructure components. For mobile products, the company reviews source code quality, performance, common security risks, dependencies, testing, deployment, documentation, and architecture. Its cross-platform audit is designed for React Native and Flutter applications, while separate audit coverage is available for native iOS and Android projects.
A-listware provides mobile development, QA, security testing, and security code review services. Its mobile capabilities include native and cross-platform technologies, while the cybersecurity practice covers source code analysis, penetration testing, security assessments, and related testing. This mix is relevant for mobile applications where the audit priority is security and software quality. The company can also support engineering work after issues have been identified.
Future Mind offers an App Health Check designed to establish whether an existing mobile codebase can support continued development, maintenance, security, and scaling. Clients can choose a holistic review or more targeted technical audits focused on areas such as security, error sources, pre-takeover assessment, and codebase development blockers. Code quality assessment looks at readability, maintainability, testability, modularity, and robustness, while the broader health check can also address app performance, UX, analytics, and ecosystem architecture. This makes the service suitable when product teams need both a source-code diagnosis and wider recommendations for an existing mobile application.
OSKI Solutions works with existing and inherited application codebases as part of its mobile development and modernization services. The company states that it can begin work on an existing mobile product with an audit of its code and architecture before recommending stabilization, modernization, or continued development. Its broader mobile capabilities cover iOS, Android, React Native, Flutter, backend APIs, testing, store submission, monitoring, and maintenance. OSKI also provides mobile testing across real devices and reviews areas such as performance, security, API behavior, compatibility, and release readiness.
Making Mobile Simple offers a dedicated Mobile App Code Review built around a full audit of an existing app codebase. The review covers application architecture, maintainability, security, crashes, performance, CI/CD, monitoring, analytics, and the wider technology stack. It is designed for situations such as taking over code produced by an external team, preparing an application for launch, deciding whether to rewrite an existing app, investigating high bug volumes, or evaluating software during a sale or acquisition. The service focuses on producing a roadmap for improvement rather than limiting the review to individual coding errors.
21century.tech focuses on production engineering, architecture, business logic, code review, QA, security, legacy refactoring, and third-party integrations. Its positioning is broader than a dedicated iOS or Android code audit service, but the company's review and refactoring capabilities can apply to mobile products where technical problems extend into backend services, integrations, and application logic. It is therefore a more relevant fit for teams looking at the complete production system behind a mobile application.
Appverra offers a dedicated mobile app code audit for native and cross-platform applications. Its process includes repository access, local application builds, hands-on code review, critical-path tracing, performance profiling, and security scanning. The company supports Flutter, React Native, Ionic, Xamarin, .NET MAUI, Swift, Objective-C, Kotlin, and Java codebases. Its standard audit deliverables include architecture grading, severity-ranked findings, performance benchmarks, security checks, and a fix-or-rebuild assessment. Teams can also select a broader option that adds migration recommendations, fixed planning, cost estimates, and guidance on the engineering structure needed for remediation.
Mobian focuses on mobile and AI product development, with work spanning iOS, Android, and Flutter applications. Its engineering approach emphasizes clean architecture, test coverage, documentation, QA, and post-launch performance monitoring. The company also assesses existing products and identifies gaps before planning development work. This makes Mobian more suitable for teams that expect an initial technical review to lead into stabilization or further mobile engineering.
Bolder Apps provides code and application audits for teams that need an independent look at an existing software product. Its audit framework covers source code quality, architecture, security vulnerabilities, performance, technical debt, compliance concerns, third-party integrations, and infrastructure. For mobile applications, the company also describes a layered audit process that can include static analysis, dynamic testing, manual code review, architecture assessment, and security testing. Findings are organized into a prioritized report so founders or engineering teams can decide which issues require immediate remediation and which belong in a longer-term technical roadmap.
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net-devs provides senior-led software engineering for existing enterprise systems, including AI-assisted codebase audits that map the system and identify technical hotspots before further development begins. Its audit work can feed into modernization planning, with the company positioning the service around understanding an existing codebase and creating a sequenced roadmap for future engineering work. The technical scope spans .NET, JVM, Node, Python, and Go, alongside cloud environments such as Azure, AWS, and GCP. Code reviews, automated and manual testing, CI/CD, and observability are incorporated into its engineering process, which can be relevant when an audit needs to lead into remediation or modernization.
Igniscor provides a mobile app audit that combines codebase analysis with architecture, UX, performance, security, compatibility, and integration reviews. Its technical audit examines code structure and logic to identify technical debt, hidden bugs, weak development practices, and performance blockers. The company also assesses outdated dependencies, authentication and data handling, third-party APIs and SDKs, device and operating-system behavior, and scalability concerns. Findings are delivered as a structured report with risk levels and prioritized recommendations, with follow-up development support available when teams need help implementing the changes identified during the review.
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SoftPro is a Warsaw-based software development company working across custom software, web applications, cloud development, and artificial intelligence. Its engineering practice covers Microsoft technologies such as .NET, .NET Core, C#, and Azure, alongside React, Vue.js, Node.js, and other modern frameworks. For mobile-related projects, the company supports backend systems powering mobile applications, progressive web applications, cloud infrastructure, QA, maintenance, and modernization. SoftPro also covers architecture and migration planning, enterprise CMS migrations, cloud modernization, and ongoing support, making the company relevant when a mobile code review forms part of a wider application or backend assessment rather than an isolated source-code check.
Choosing a mobile app code audit company depends on the condition of the existing product, the technologies involved, and the type of review required. The companies in this list cover different audit scopes, from source code and architecture reviews to security, performance, backend infrastructure, and technical debt assessments.
Before selecting a provider, define the main purpose of the audit and the areas that need independent assessment. Teams taking over an inherited codebase may need deeper architecture and documentation reviews, while products facing performance or security issues may require more specialized testing. Some providers also offer remediation, modernization, or continued development after the audit, which can be useful when the findings need to translate into concrete engineering work.
A clear audit scope, relevant mobile expertise, transparent deliverables, and experience with the app’s technology stack can help teams obtain a more useful assessment of their existing codebase and plan the next stage of development.
