Check out Repertree.com - it's what my friends and I built for exactly this. You build your repertoire and drill it with spaced repetition so the lines you miss come back more often. We are launching many new features as well and launching on mobile soon!
App or computer program for help with memorizing (esp. openings)?
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Another server that I play for bullet and blitz, there is server analysis with Stockfish depth 24, I just learn my own opening mistakes with Stockfish suggested lines. ( I guess SF strength is approx ~3300 strength for depth 24 , more than enough to beat any human on earth).