Retro Flash vs Lösa

Welcome to Retro Flash and the Arcade Bouldering Community! Retro Flash is the Ultimate Spray Wall App, designed with every member of the climbing community in mind! We have created a lot of unique tools to ensure that everyone has everything they need to get the most out of their spray walls! For example, we support symmetrical, partly symmetrical, adjustable and private walls! Set all kinds of problems on your wall, like circuits or even competition boulders! With our wall upgrades, we upgrade your walls to the next level, opening up a lot of new possibilities! Now, you can even upgrade your walls by yourself!! Retro Flash supports the Fontainebleau, Dankyu and Hueco grading systems. You can also define your own grading systems or even deactivate grading! Download Retro Flash now and become a part of our growing community!

Your flash on that purple boulder. The slab that's been shutting you down for three weeks. The moment everything finally clicks. Lösa keeps track of every moment — so your progression never lives only in your head. EVERY ATTEMPT COUNTS One tap, that's it. Send, flash, project, attempt — Lösa captures the moment while you're still in the effort. Add how you felt after each boulder: the grin of a flash, the frustration of almost, the burn of "one more try". YOUR STORY TAKES SHAPE You don't see your progression day to day. But it's there. Boulders sent, styles explored, level climbing — Lösa makes it visible. Activity heatmap, progression curves, style breakdown: your climbing journey, in black and white. YOUR GYM, LIVE Today's new boulders, the classics about to be stripped, that overhang everyone's trying. Browse the catalog with photos, grades, and sectors — and find your next challenge. SPRAY WALLS — CREATE YOUR OWN BOULDERS Your gym has a spray wall? Pick the holds, draw your line, share it. Your creations live in Lösa like any other boulder — with the same interactions, the same progression tracking. CLIMB. WE'LL HANDLE THE REST. • Less than 3 seconds per interaction — between attempts, not between screens • Works offline — your sends are saved even without signal • Private by default — your data, your rules • Multi-gym — one profile, all your gyms Every boulder has a story. Start yours.