Sophia's question is the right one, and the short answer is that most Excel merger tools, including SysTools, are solving the wrong problem. They treat data merging as a file operation when it is really a data integrity challenge. Formatting loss and data corruption are not bugs that better software will eventually fix; they are structural limits of tools built to stitch files together instead of working with the data itself.
The real issue here is that merging 100 Excel files weekly is not a one-time crisis. It is a recurring workflow that demands a fundamentally different approach. Traditional merger tools operate on the assumption that your files are already clean, consistent, and formatted identically. In practice, that is rarely true. Column widths shift, cell types mismatch, hidden rows appear, and merged cells break. A tool that simply copies and pastes content into a destination file will eventually fail, and when it does, you lose hours rechecking data you thought was safe. Sophia's confusion between SysTools and other options is understandable because the market is full of products that promise the same thing and deliver the same disappointment.
What Sophia actually needs is a spreadsheet environment that treats merging as a native capability, not an add-on. AI-native spreadsheets, for example, can recognize patterns across files, preserve formatting rules by learning what matters, and flag inconsistencies before they become errors. The goal is not to find the least bad merger tool. It is to eliminate the merge step entirely by working with data that is already unified. That shift changes the question from "Which tool loses the least formatting?" to "How do I stop needing to merge files at all?"
For anyone facing Sophia's exact situation, the practical step is to test a solution with five files first, not 100. Run a small batch, check every cell's format and value, and confirm that hidden data like comments or conditional formatting survives. If the tool passes that test, scale up gradually. If it does not, move on. The right tool will not ask you to trust it with 100 files right away. It will earn that trust file by file.