For undervalued I can definitively say DGPT. A peer-to-peer, anonymous, and decentralized solution to digital asset inheritance. May/June should be very good months to DigiPulse with a platform launch expected in July. There are a couple of competitors (Safe Haven and MyWish) but they each have their short comings and I believe DigiPulse has the best solution right now.
Safe Haven involves lawyers/third parties and MyWish involves your inheritor to already have wallets and currently only able to pass down ETH assets.
And I think that more popular altcoins are undervalued. These are Waves and Litecoin. Hope, they will grow a lot this year. Here is the video about the other alts:
https://www.youtube.com/watch?v=hF_dpaXium0