apk-signer APK 7.0.0

5 stars: Works nice! Lots of developers are cramming tons of adware into their latest updates. This app allows me to save the last working ad free version of an app as a backup so when the adware update hits, I can just revert back to the saved version. Thanks for this!
4 stars: 4 out 5. I kinda find it pretty useful to be honest because whenever I downloaded a game and planned to add a modifications on it and since the APK needed to be signed but the Developers, this application came in and saved the day and made my modifications easier as I could get. Maybe if the ADS can be controlled and not as annoying I'll be happier to give this a 5 out of 5.
4 stars: I haven't used this app very much, but I did find out that I can create backup APKs of already-installed apps, so if one of my other apps stops working because of an update I can install the backed-up version. That's super useful!
3 stars: I'd pay for it if it was a normal purchase, but it only last 30 days. Sad to see apps going this model. Since I'll only use it once every couple weeks on multiple devices, that's a non-starter. I'll put up with all the crazy ads for that little bit of use. I'd pay $20 once before I'd pay $1 multipe times for the same thing.
3 stars: I can't find any way to sign an apk with an existing key, otherwise I would have rated this app higher. It seems like you put a lot of thought into it but it assumes every APK is new and needs a new key. (Editing to clarify: it is necessary t