EngToolBox vs Substation Engineer Suite

Welcome to EngToolBox , where I have designed this all-in-one app with privacy in mind where all the data is on device and plus the journal that is on Moodtracker in Stress Relief section is safe and secure with Keychain security (you have to set the pin for yourself in the Settings on the app) plus the app is fully operational offline .  The features of the app are: -Multi purpose calculators , from simple calculator with the basic addition , subtraction ,multiplication and division that are operations you can do in other sections also like binary calculator with some more features included , octal calculator , Hexadecimal calculator and also base conversion calculator and also logarithmic calculator to more advanced calculators like symbolic and numerical calculator. -Stress Relief section where you can find tips breathing exercises and also a full on device journal called Mood tracker. -A game for engagement where you have to try finding the most optimal way to connect the battery to Led named Circuit Builder. -A section about Formulas where you can find helpful formulas and explanation about different courses in computer engineering. And also a section about timers where you have different presets for productivity timers like Pomodoro timer , and the settings section that you can enter you PIN. Version 1.0: Perfomance improvments and also a cleaner and a more user-friendly interface. EngToolBox is an app designed with privacy on mind where is fully operational offline and no data is being collected.Download the app and I hope you will find the features useful. If there is any request for new feature or bug you encounter don't hesitate to contact me .

Substation Engineer Suite is the complete professional reference and learning suite for high-voltage power substation design — a fully interactive 3D substation, an extensive engineering drawing library, IEEE/NFPA references, and a full set of field calculators, all in one app. Whether you're a power engineer reviewing a single-line diagram, a student learning how a substation actually works, or a field technician who needs a fast calculation on site, SubstationEngineer puts substation knowledge in your pocket — and it works completely offline. The app is organized into two modules. Buy only what you need, or get both in a discounted bundle. ELECTRICAL SUBSTATION TOOLKIT • 160+ professional engineering illustrations across 10 categories • Pinch-to-zoom with smooth swipe navigation • Favorites and personal notes on any drawing • Full-text search across the entire library • 10 engineering calculators (transformer sizing, fault current, grounding, and more) • IEEE / NFPA reference library • 30-question knowledge quiz 3D EXPLORER • Interactive 3D substation model with 54 tappable components • Tap any component for its code reference and engineering notes • X-Ray and Energize visualization modes • 8 filterable equipment systems • 15 engineering calculators (IEEE 80 grounding, fault, transformer, and more) • Learning Hub: quiz, glossary, guided tour, and fault simulator • Substation image gallery WHY YOU'LL USE IT • Works 100% offline — no account and no internet connection required • One-time purchases — no subscriptions, ever • Buy a single module or unlock everything with the bundle • Grounded in IEEE and NFPA engineering standards • Built for real engineering work, from the classroom to the control house From study to substation, SubstationEngineer is the reference you'll actually keep on your phone. IEEE and NFPA are trademarks of their respective owners. This app is an independent reference and study aid and is not affiliated with, endorsed by, or sponsored by IEEE or NFPA.