saasrankedSoftware, ranked on the facts

AOMEI Partition Assistant vs 4DDiG Partition Manager

Two of the top three disk partition managers, compared rule by rule on published facts.

Facts checked 9 Oct 2026

In short

AOMEI Partition Assistant

87/100 #2 of 12

Best for: People who want a long refund window and a one-time licence for 2 PCs.

4DDiG Partition Manager

78/100 #3 of 12

Best for: People who want one paid tool for resizing, migrating and converting disks.

Points by group

GroupAOMEI Partition Assistant4DDiG Partition Manager
Partition tools of 262322
Disks and system of 313131
Safety and media of 1577
Price and licence of 282618
Total8778

Rule by rule

What each vendor publishes, and the points it earns. Sources are on each product page.

Rule (points)AOMEI Partition Assistant4DDiG Partition Manager
Resize and move partitions (8)Yes 8Yes 8
Merge partitions (4)Yes 4Yes 4
Give free space to another partition (3)Not published 0Not published 0
Split a partition (4)Yes 4Yes 4
Convert FAT32 to NTFS (3)Yes 3Yes 3
File systems named (4)NTFS, FAT32, exFAT, Ext4 4NTFS, FAT32, exFAT 3
Convert MBR and GPT without data loss (8)Yes 8Yes 8
Migrate Windows to another drive (8)Yes 8Yes 8
Clone a whole disk (7)Yes 7Yes 7
Recover lost partitions (5)Yes 5Yes 5
Disks over 2 TB (3)Yes 3Yes 3
Bootable disc or USB (7)Yes 7Yes 7
Protection if an operation is interrupted (5)Not published 0Not published 0
Open source (3)Not published 0Not published 0
Free edition (8)Yes 8Not published 0
Cheapest paid edition (10)$49.95/yr 8$40.95/yr 8
One-time licence (6)Yes 6Yes 6
Money-back period of 30 days or more (4)Yes 4Yes 4

AOMEI Partition Assistant

AOMEI Partition Assistant suits people who want a free edition that resizes, moves and merges partitions, or a paid one with a 90-day refund window. Professional is $49.95 a year or $69.95 once. The catch: no page names a rollback for interrupted operations, and the help page for allocating free space does not say whether partitions must be adjacent.

All facts, prices and sources for AOMEI Partition Assistant

4DDiG Partition Manager

4DDiG Partition Manager covers most partition jobs: resize, merge, split, FAT32 to NTFS, MBR to GPT, OS migration, cloning and partition recovery. A year for one PC is $40.95 and a lifetime licence is $59.95, with a 30-day refund window. The catch: the vendor names no protection for interrupted operations, and merging works only on adjacent partitions.

All facts, prices and sources for 4DDiG Partition Manager

Both products are scored by the same rules: how we score disk partition managers.