Disk Drill is available in a Free/Basic version and a Pro version for $89.
Disk Drill is a Mac data recovery software designed natively for Mac OS: easily protect your files from accidental deletion with Recovery Vault and recover lost data from Mac disks. When something is deleted Recovery Vault makes it possible to recover not only the file itself, but also its properties, such as original file name, location, etc. So you will always be able to recover data from Mac files system (HFS/HFS+) and FAT32 partitions. Disk Drill also includes more...
- new - file signatures in Deep Scan's binary recognition: SWIFT source codes (XCode), MPO (Multi Picture Object File or simply stereo images), TAR.XZ (XZ Compressed Tar Archive), RDB (Retrospect Backup Set), OPJ (OriginPro 8 files)
- new - Fuse for OS X version 2.7.5 integrated
- improved - modal windows behavior during DMG backup
- improved - UI texts and more...
- OS X 10.6.8 or later