Ask HN: Know any good AdWords bidding automation SaaS solutions?

Keeping all my AdWords CPC bids optimized is taking me a lot of time (I have about 20 campaigns, all with different seasonality, so periodic tuning is necessary). I'm guessing this should be a very common problem for small startups. I have worked with bidding algos in the past (unfortunately I am not at liberty to use them in my side projects), but I remember a little bit of trickery got you a long way in terms of CPA optimization. I googled around looking for bidding automation solutions, and all I can find are ugly-looking ms-windows applications that seem to belong to an age long gone. Where's the snappy, startup-friendly SaaS adWords bidding automation provider?