Subscriptions: Continuous Access to the Latest Tools and Features, Free to Try
You can download SignalScope X and SoundMeter X for free. Some functionality is free to use indefinitely. For access to more power tools and additional features, a subscription is required. You can try a subscription for free for up to 7 days.
Perpetual License: Pay Once, Use Indefinitely
The 2018 versions of SignalScope and SoundMeter will receive upgrades consistent with the respective subscription levels in SignalScope X and SoundMeter X through 2019. After that, they will continue to receive maintenance updates for a limited time and will continue to work indefinitely on compatible versions of iOS (currently, iOS 10 through iOS 12).