I full-stacked AdNova previously, and I full-stacked Skaler. The difference with Skaler is that it's definitely built to PRODUCE ads, not just spy on competitors. Anyone who's spent a lot of time manually building ads in the past know's how boring and time-consuming it is.
Skaler does an admirable job of producing ads, whether you want to clone an ad OR build your own from scratch.
The adspy part of it is not quite there yet, which is understandable since it's a new app. Give it time and I'm assuming it will fill out with a lot more ads. In the meantime you can ad brands you're interested in from the Facebook ads library. You don't even need to do it manually, you can search for the brand and add it directly within the Skaler app.
It would be nice if all the ads Facebook has from a brand were imported, not just the ones currently running.
There's a few issues with missing data (eg. reach in some cases) that I assume will get fixed with time.
And for people wondering about spend, it only applies to ads that are running in the EU (because they're the only ones who force Facebook to provide that information). It can seem confusing if you don't know that, and also if you're looking at the global view of ad spend for a brand the $ figure would only be for the EU portion of ads if they also run ads elsewhere (which could be confusing if you don't know).
I used another ad spy tool in the past that used (apparently) some fancy algorithm for estimating ad spend for non-EU advertisers. Not exactly sure how accurate the numbers were, but would be an cool feature to add to Skaler if it could be done.
Anyway, if you're a serious advertiser this deal should be an easy buy.