Flash Format 2.30

the author of this app says:

Get detailed information and statistics about your storage cards, including physical characteristics and analysis of file allocations. You can also perform integrity checks and recover lost clusters.

With automatic detection of card insertion and removal, you can check or format multiple cards easily.

Features:

• Supports all ATA-compliant storage cards
• Provides detailed storage and file statistics
• Verification of card integrity
• Detects and repairs allocation errors
• Supports multiple storage cards simultaneously
• Option to create backup FAT when formatting, to improve storage reliability