Seems like a sales tool or scam more than a utility

Downloaded and opened this app. Landing screen was a plug for subscribing to their newsletter, with no apparent option for actually unzipping a file. I did this—stupidly—in the hopes that would unlock the app, but nothing happened. I finally figured out how to process a file, which it failed to do. Seems more like a scam than a useful tool.

bill.george about Decompressor