Not worth $5
I regularly use the JL Audio Tools app. It works great in a pinch. It advertised to me that this "pro version" was half off. I went for it hoping for some new useful tools. I was very disappointed. Most of the interesting tools require expensive in app purchases ($10). There wasnt anything new from what the free JL Audio app offers me. It does include a new sine wave/noise generator, but there are better free apps for that available. I wish I could get my money back. This app is totally useless.
dantechpro about
AudioTools - dB, Sound & Audio, v7.3