Why Buy?

In addition to the free basic functions, you gain access to the following extended functionality in the Premium subscription:

• New, fantastically precise comparison method, based on “acoustic fingerprint”. This algorithm drastically surpasses the normal content-based comparison algorithm.
• Automatic save and restore of the program state on exit and run. Not only is the result list saved, but also the current progress. So you may exit the program at any time and on the next run the scan will continue from where you stopped upon exit.
• A possibility to see a detailed spectrogram for individual files and micro-spectrograms in the analysis result list.
• You can automatically mark files for deletion or moving. This helps to effortlessly clear duplicates without manually looking through all results.
• The “Rearrange groups” function helps you to manually filter the best and the worst duplicates.
• You can work with many different folder groups to limit the comparison to some particular folders only. For example, you can use this to compare your current music collection with newly added files to see if some of them duplicate your existing compositions.
• Acceleration of computing with the OpenCL technology. This option allows Similarity to utilize your GPU or other device as an additional computation device along with your CPU. Modern video cards can significantly increase the process of searching duplicates with the "precise" algorithm.
• Priority 48 hours technical support.
• You gain any new functions added within the subscription period for free.
• By purchasing the subscription you help us to develop future versions and improve the functionality.

There are two kinds of subscription: the annual subscription ($19.95) allows the program to work within one year after the activation, and the unlimited lifetime subscription ($34.95) that allows the program to work during its entire life cycle.