If you are using an ELM327 interface and need alternatives, several official apps and programs are compatible:
If you only need basic diagnostics, the "Lite" version is often available for free or at a much lower cost for mobile devices via the Google Play Store. Top Free & Legal Alternatives scanmaster+elm+registration+key+generator+updated
If you want, tell me which OS/device and which ScanMaster+ feature you need and I’ll recommend a legal replacement. If you are using an ELM327 interface and
Q: Can I use the generated key on multiple devices? A: It depends on the generator and software version. Some keys may be device-specific, while others may be transferable. A: It depends on the generator and software version
– Upon launch, ScanMaster ELM reads the stored machine fingerprint, decrypts the license blob using the embedded public key, and verifies that the signature matches. If any field is out‑of‑date or the signature fails, the software reverts to restricted mode (no logging, no DTC clearing).