stl vs CertTracker

stl-er is the world's first AI-powered 3D model generator built for 3D printing. Simply describe any object in plain text — and get a fully parametric, functional 3D model in seconds. No CAD experience needed. HOW IT WORKS 1. Describe what you want (e.g., "phone stand with cable slot") 2. AI generates a precise 3D model using CAD 3. Adjust dimensions with live parameter sliders 4. Download the STL file — ready for your 3D printer KEY FEATURES • AI-Powered Generation — From text prompt to 3D model in seconds • Live Parameter Sliders — Fine-tune dimensions, rounding, and details in real-time • AI Refinement — Modify designs with follow-up prompts ("make it taller", "add ventilation holes") • Instant STL Downloads — Export files ready for any 3D printer or slicer • 3D Preview — Rotate and inspect your model before downloading • Community Library — Browse, remix, and share models created by other makers • Cross-Platform — Seamlessly sync between iPhone, iPad, and Web PERFECT FOR • 3D printing enthusiasts and makers • DIY builders and hobbyists • Product designers and engineers • Educators and students • Anyone who wants custom 3D models without learning CAD software WHY stl-er? Traditional CAD software has a steep learning curve. AI model generators produce meshes that aren't optimized for printing. stl-er combines the precision of parametric CAD with the simplicity of natural language — every model is mathematically exact, fully customizable, and ready to print. Every design is solid, manifold, and slicer-ready. Start creating. Now. Terms of Use: https://www.stl-er.com/terms-conditions/ Privacy Policy: https://www.stl-er.com/privacy-policy/

Your certifications are what let you work. Let one lapse and you're off the job site. CertTracker keeps every license and certification card in one place on your phone, tracks every expiration date, and warns you months before anything runs out — so a renewal never sneaks up on you again. —————————— WHAT IT DOES ONE WALLET FOR EVERY CREDENTIAL Snap a photo of the front and back of each card, or attach the full PDF — as many files per credential as you need. Store the issuer, license number, issue and expiration dates, plus notes about renewal classes or CE hours. REMINDERS THAT GIVE YOU TIME Choose your warnings: 1 year, 180, 90, 30, 14, 7 days, or day-of. Set them per credential. Renewal courses fill up weeks out — CertTracker makes sure you book before the seats are gone. STATUS AT A GLANCE Every credential is color-coded current, expiring, or expired. Tap any status to filter instantly. The app icon shows a count of what needs attention before you even open it. SHARE IN SECONDS Generate a clean, branded PDF of one certification or several at once, then send it by text, email, or AirDrop. Perfect for onboarding paperwork or a supervisor asking for proof on the spot. QR CODE VERIFICATION Show a QR code anyone can scan with a phone camera to instantly see your credential details and whether it's valid. Ideal for gate checks and safety officers. RENEW WITHOUT LOSING HISTORY Enter your new dates and CertTracker archives the old card automatically — useful when a job asks how long you've held a qualification. FIND ANYTHING FAST Search by name, issuing organization, or license number. Tap any license number to copy it straight to your clipboard for filling out forms. LIGHT AND DARK MODE Follows your phone, or lock it to either. Readable in a dark truck cab or direct sun. —————————— YOUR DOCUMENTS NEVER TOUCH OUR SERVERS This is what makes CertTracker different. No account. No sign-up. No password. No cloud database holding your licenses. Every photo, PDF, and date is stored on your own phone. Reminders are scheduled by your phone, not sent from a server. When you share a certification, the PDF is built on your device and handed to your messaging app. We cannot see your credentials, because we never receive them. There is nothing on our end to leak, sell, or breach. Export an encrypted backup anytime and keep it wherever you choose — your own cloud drive, a computer, a USB stick. Moving to a new phone means importing one file. —————————— WHO IT'S FOR Electricians, plumbers, HVAC techs, welders, CDL drivers, crane and forklift operators, riggers, ironworkers, pipefitters, safety managers and site supervisors — anyone whose paycheck depends on a card staying current. Track credentials like: • OSHA 10 and OSHA 30 • CDL Class A and Class B • First Aid / CPR / AED • EPA 608 Universal • Forklift and aerial lift • Journeyman and master electrician licenses • HVAC and welding certifications (AWS) • Crane operator (NCCCO) • HAZWOPER 40-hour and refreshers • Confined space, fall protection, scaffold • TWIC cards, flagger cards • State contractor and trade licenses —————————— FREE AND PRO FREE • Up to 3 certifications • Photo and PDF storage • Full expiration tracking and reminders • Search, notes, renewal history PRO — $14.99, ONE TIME • Unlimited certifications • PDF sharing • QR code verification • Every future update included One payment. No subscription. No renewal fee. Yours for life. —————————— Stop digging through the glovebox and old emails looking for a card you might have already let expire. Download CertTracker and know exactly where every credential stands.