Using account checkers to access accounts you do not own is illegal and constitutes a "credential stuffing" attack.
The ability to import large text files containing "combos" (username:password lists) to test against a target's login page.
If you are looking for legitimate automation software, consider Zapier (which offers a legitimate tool called "Zappy" for screenshots) or reputable security testing platforms. Zappy: Free Screenshot & Recording Software for macOS Zappy Checker.rar
After finding a valid login, the tool "captures" specific account details such as subscription type, expiration date, linked payment methods, and account balance.
Automatically saves successful hits ("Hits") and custom-captured data into separate text files. Important Safety Warning Using account checkers to access accounts you do
Because these tools are often distributed in compressed .rar files on gray-market forums, they frequently contain malware or are flagged as malicious by security software.
Files named "Zappy Checker.rar" found on public file-sharing sites are high-risk. Zappy: Free Screenshot & Recording Software for macOS
These tools are commonly used to hide Trojans, stealers, or backdoors that can compromise your own computer.