freeRASP is a freemium RASP and app-shielding SDK that detects rooted devices, hooking frameworks, repackaging and unsafe runtime conditions across mobile platforms for developers and authorized security teams.
| Tool | talsec/Free-RASP-Community — mobile in-app threat detection and security monitoring SDK for iOS and Android |
| Category | Runtime App Self Protection (RASP) / application shielding library |
| Primary Use | Embedding runtime security checks — root/jailbreak detection, Frida and Xposed hook detection, tampering and repackaging detection — into your own mobile applications |
| Safe Use | Intended for developers and authorized security teams hardening applications they own, in development labs, internal red-team validation, and defensive research against OWASP MASVS V8 resiliency requirements |
| Telemetry Note | From the defender side, freeRASP emits a weekly security report by email summarizing device security state and app integrity; its checks run inside your own app, so detection signals are first-party telemetry rather than network-side indicators |
freeRASP from talsec/Free-RASP-Community is a mobile in-app protection SDK that implements what the industry calls RASP — Runtime App Self Protection — or app shielding. The core idea is that a mobile application should not be a passive victim of its environment: instead, the app continuously inspects the security posture of the device it runs on, reacts to detected threats through an API, and monitors its own integrity. The README frames it as a lightweight library covering the main aspects of RASP while keeping the integration surface small, and with roughly 515 stars and an MIT-licensed open-source component, it has become a popular entry point for teams that need baseline mobile hardening without building detection logic from scratch.
Architecturally, freeRASP is not a single monolithic library but a family of platform-specific submodules living under the talsec organization. The umbrella repository points to dedicated packages for Flutter (also published on pub.dev as freerasp), Capacitor, React Native, Cordova, native Android, native iOS, Kotlin Multiplatform, Unity, and Unreal Engine, with the last two still labeled as POC repositories. This breadth matters operationally: a security team standardizing on one RASP layer can carry the same detection semantics across a mixed portfolio of native and cross-platform apps instead of maintaining per-stack glue code. The README's per-platform installation guides live in those submodule repositories rather than in the umbrella repo, which keeps the main project focused on feature documentation.
The detection surface is broad and reads like a checklist of OWASP mobile attack vectors. freeRASP flags rooted or jailbroken devices, explicitly naming common tooling such as su, Magisk, KernelSU, Shamiko, HideMyApplist, unc0ver, checkra1n, and Dopamine. It checks for unlocked or compromised bootloaders, detects reverse engineering attempts, and — critically for anyone who has watched a mobile assessment begin with Frida — identifies running hooking frameworks including Frida, LSPosed, Xposed, and Shadow. That hook-detection capability is what makes the tool interesting from both sides of the fence: it is defensive instrumentation that directly counters the standard dynamic-analysis toolkit used in authorized penetration tests, so testers should assume a freeRASP-instrumented target will fight back.
Beyond environment checks, the SDK addresses the app's own integrity. It detects tampering and repackaging, meaning a modified APK or IPA redistributed through an unofficial channel should trigger an alert, and it flags installs that came through untrusted methods or unofficial stores. It also watches for UI automation and driven-input attacks, citing Appium as an example — a pragmatic inclusion given how much mobile fraud is scripted rather than memory-corrupted. For regulated or high-value apps, these checks cover the classic overlay-and-script abuse patterns that traditional endpoint tooling on mobile rarely sees.
The feature list extends into several defensive corners that are easy to overlook. freeRASP prevents data leakage via screen capturing, blocking screenshots and screen recording; identifies device spoofing such as GPS/location mocking and time manipulation, both of which are staples of geofencing and OTP-replay fraud; monitors for suspicious network conditions including system-level VPN usage and unsecured Wi-Fi; and flags unsecured device environments like enabled Developer Mode or active ADB. Taken together, this is less a single detector and more a portfolio of small, cheap probes whose combined signal distinguishes a hostile runtime from an ordinary user's phone.
A notable companion feature is freeMalwareDetection, housed in its own repository at talsec/freeMalwareDetection. On Android, it scans the device for malicious or suspicious applications by matching package names, hashes, and permission profiles against blacklists and security policies. The README positions it as a follow-on after the base SDK integration, and it effectively turns the host app into a lightweight on-device reputation sensor — useful for fintech scenarios where banking trojans coexisting on the device are themselves a risk signal, independent of any attack on the app itself.
From a compliance perspective, the README claims freeRASP fulfills OWASP MASVS V8, the Resiliency Against Reverse Engineering requirements chapter of the Mobile Application Security Verification Standard. That is a meaningful statement for teams working through MASVS-LTR certification or preparing apps for security review, because reverse-engineering resiliency is otherwise one of the harder verification levels to evidence. Pairing the SDK with the published wiki documentation of each check gives auditors a concrete artifact trail mapping controls to requirements.
The reaction model is API-driven: when a check fires, the host application receives the event and decides what to do — warn the user, degrade functionality, or terminate. This is the correct design choice for a freemium SDK, because it separates detection from policy and lets each product team tune responses to their risk appetite. The README also highlights a weekly security report delivered by email summarizing device security status and app integrity, which implies a telemetry backend behind the binary component; teams with strict data-residency or privacy obligations should review what the SDK phones home before shipping it to production users.
Licensing deserves a careful read. The project is described as freemium software under a fair-usage policy: the open-source parts are MIT-licensed, but the SDK also ships binary components that remain the property of Talsec, with limitations on free usage documented in the plans comparison. This hybrid model is common in the app-shielding space, but it means the repository is not a fully auditable codebase — the detection logic you rely on is at least partially closed, which is worth noting in any threat model or supply-chain review that assumes source-level verification.
For defenders and authorized assessment teams, freeRASP is best understood as a benchmark: if you build mobile apps, integrating it is a low-effort way to raise the cost of dynamic analysis, repackaging, and scripted fraud against your own products. If you test mobile apps for a living, its detection matrix — Frida, Magisk, Appium, repackaging, ADB — is effectively a published map of what a hardened target will notice, making it equally valuable as a reference for understanding modern RASP coverage. Documentation has been consolidated at the Talsec GitBook portal, including an integration guide and a changelog tracking updates across all nine platform targets, so verifying current check behavior against the latest release is straightforward before adoption.
talsec/Free-RASP-Community.Educational analysis for authorized security professionals. Use only in controlled, authorized environments.
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