If you lost your original instruction manuals or you have an extra inventory of unused parts and you want to try building something new. This app will do the job. FEATURES: Lego Technic sets instructions are well categorized by type and available for download in (. PDF) format (The library will be updated frequently with new sets). View parts inventory button to check that you have all the needed parts to start your build. Explore all Lego Technic sets and find new sets to build. Light weight application (Less than 12 mb) so it won't hurt your storage memory. Quick & easy to find your next build. Instructions are in a clear downloadable (. PDF) files. Instructions are downloaded directly to your Phone/Tablet Storage to be used later. DISCLAIMER: LEGO, the LEGO logo are trademarks of The LEGO Group. This is an UNOFFICIAL APP and presented with an indirect name to emphasize that. This application complies with the US Copyright law guidelines for fair use. This application complies with LEGO Group fair use guidelines. App Icon and Featured graphic are made by the app developers. FEEDBACK: For any feedback contact us through this email: Hishamelmeligydev@gmail.com. NEVER STOP BUILDING.