RowKite vs Diffchecker: the same Excel files, tested
Choose RowKite when your task is to reconcile selected business fields across one reference and several exports, with matching rules you set. Diffchecker is useful for reviewing spreadsheet changes as cells and moved rows, with a wider range of spreadsheet formats and formula-comparison controls. Both handled the small reordered-order example; their result counts describe different things.
How we tested
We used Chrome on macOS, without signing in to either comparison tool or activating a paid plan. The inputs are the unchanged English XLSX files from our sample library, version 2026-11-13. Files contain fictional records. RowKite used default raw-value rules; Diffchecker used Standard comparison in Table and Rows views, with the sorting step recorded below.
These are small workflow checks, not speed, accuracy or security benchmarks. We did not test formula comparison, formatting preservation, large files, offline use, every import format or paid exports. Product interfaces and prices can change after the test date.
Download the exact sample files, rules and expected results →1. Rows move, IDs stay the same
RowKite
Select Order ID as the matching column and Amount as the comparison column. SO003 stays unchanged even though it moves. SO001 changes from 120 to 125.
Diffchecker
In Table mode, the change list identifies a moved SO003 row and the edited amount. Sorting both sheets by Order ID removes the move from the change list. Rows mode presents the edited, moved record as removal/addition instead.
2. A changed amount, an added order and a missing order
RowKite
One modified record (SO001), one missing (SO002), one added (SO004), and one unchanged (SO003), relative to the reference.
Diffchecker
After Sort rows → Order ID, Table mode shows one Modified cell, one Row removed and one Row added. Its counts refer to changes, not RowKite record-status totals.
3. A repeated order ID and a composite key
RowKite
With only Order ID selected, SO001 has repeated matching values and requires review. Selecting Order ID + SKU identifies its line items; P02 changes in Quantity and Amount, while the other two items match.
Diffchecker
Using the same files in Table mode, we observed two modified cells and one moved row. The visible change list did not show a repeated-key review warning in this run. This does not establish that every mode handles duplicates the same way.
4. One reference and four comparison files
RowKite
The five-file sample runs as one task. Each target is compared against the reference; the report retains the target identity. This is not a comparison of every possible file pair.
Diffchecker
The tested Excel web interface has one file slot on each side, both single-file inputs. We tested pairs in that interface, not batch workflows in other products or paid plans.
5. Review and export
RowKite
The free XLSX report includes Summary, Comparison details and Issues. Review source-row references and repeated-key issues before using the result.
Diffchecker
The free anonymous session showed cell coordinates and moved-row positions. Export was disabled with the tooltip “Diffchecker Desktop and Pro only”. The official Excel page lists PDF and Excel export on Pro; we did not purchase or test those exports.
Try the order example yourself
- Download reference A and comparison B from the ID example.
- In RowKite, select Order ID for matching and Amount for comparison. Compare, review the four record statuses, and download the XLSX report.
- In Diffchecker, choose the same two files, select Table and Find difference. Inspect the change list, then use Sort rows → Order ID and compare the result with Rows view.
RowKite reads saved values and does not recalculate formulas. It accepts .xlsx and standard .xls files, using 1–3 matching columns and up to four targets. Repeated keys need review; row order alone is not a unique business identifier.
File handling and official sources
RowKite processes the comparison files in your browser. Diffchecker also describes its Excel comparison as running in the browser, so local processing is not a unique distinction. Saving, sharing and other features have their own conditions; read each product’s current policy before choosing a workflow.
- Diffchecker Excel comparison · Diffchecker privacy policy
- RowKite user guide · RowKite file and data policy
This comparison is written by RowKite about its own product. No vendor endorsement, review score or ranking is implied. Observations above apply to the tested files and settings on 13 November 2026.