Free review
$0
- 2–3 report snapshots
- 500 rows / 200 KB per report
- 5 successful reviews per browser per day
- Summary and change-log CSV exports
FOR THE PERSON WHO HAS TO EXPLAIN THE DELAY
Which supplier delivery dates moved again?
For buyers preparing a supplier follow-up: compare saved Excel or CSV reports, see each order line’s observed date changes, and export the source rows behind them.
Bring the reports you already keep. If your files or workflow need something different, tell us—those requests help shape what we build next.
START WITH THE REPORTS YOU ALREADY HAVE
Let's untangle the dates.
Files stay in this browser. Use reports for the same order population. Keep the report date separate from its delivery dates.
Inspect report dates and matching columns
Start with the example or choose two or three reports.
Need more reports or larger files? See the offline editions.Your observed date trail
The first observed ETA is not necessarily the original promise. These reports show planned-date changes, not actual delivery performance. Missing rows never mean “delivered” or “cancelled”.
Is this the answer you needed? Tell us what is missing or request a workflow adjustment.
Before you use this review
| Bring | 2–3 dated CSV, TSV or XLSX snapshots in the free version; up to 20 in the offline edition. One selected worksheet per file. |
|---|---|
| Match | Explicit stable order-line identity; distinct report dates. Duplicate identities stop the comparison. |
| Calculate | Count observed ETA transitions and last minus first observed ETA in calendar days. Retain source rows and missing observations. |
| Cannot establish | Actual delivery performance, the original promise or edits between saved snapshots. Workbook formulas are not recalculated. |
A SMALL TOOL WITH A VERY SPECIFIC JOB
The weekly report changes.
Your record shouldn't disappear.
Date Trail compares retained snapshots by a stable order-line identity. It lists observed changes, net movement in calendar days, and the file and row behind each comparison.
Read the method and worked example- Bring at least two saved reports.
Export the same population each time. XLSX users can select a worksheet; each selected file represents one dated snapshot.
- Confirm the dates and matching columns.
Choose a stable order ID plus line or shipment ID where needed. Duplicate identities stop the comparison instead of guessing.
- Review the trail, then take it with you.
Download the summary and source-linked change log for your next follow-up. Absent reports and blank ETAs remain visible.
TRY YOUR REAL FILES BEFORE YOU BUY
One check today. A repeatable routine tomorrow.
Start free. Pay once for a downloadable offline edition when you need more room. No AI charges or subscription.
JUST THIS WORKFLOW
Date Trail Offline
$3.90 once · USD
- Up to 20 snapshots per review
- 10,000 rows / 2 MB per report
- 100,000 rows total · no daily limit
- Save and restore column/date setup
More supplier workflows
$7.90 once · USD
Supplier Files Batch + Date Trail Offline. Also includes Pack Audit, SKU Bridge and Feed Drift.
$12.90 once includes all 10 existing reviews plus Date Trail.
Compare editionsOne-time purchase of the current edition, not a promise of future features. Payment availability is confirmed at checkout. Merchant: Pet Products. A request for customization does not purchase or guarantee custom development.
YOUR WORKFLOW COMES FIRST
What would make
your next Friday easier?
Different columns? Split shipments? A report your manager keeps asking for? Tell us what you are trying to get done. Specific examples help us choose useful improvements.
Custom workflow requests are welcome. We review them before discussing scope; nothing here signs you up for a service.
A few things worth knowing
How can I track supplier delivery date changes in Excel reports?
Keep a dated copy of each report instead of overwriting it. In Date Trail, load at least two snapshots, map a stable order-line identity and the planned delivery date, then review the observed changes and their source rows. A single latest file cannot reconstruct earlier dates. Follow the three-report worked example.
Does this tell me whether a supplier delivered on time?
No. It compares planned ETAs in saved reports. Actual delivery performance requires actual receipts and an agreed baseline, which this tool does not establish.
Can it recover changes between weekly snapshots?
No. A date may change more than once between saved reports. The count is observed transitions, not the total number of edits. A missing report interval is marked rather than filled in.
Can I use Excel files with different column names?
Yes. Select the worksheet and map the identity and ETA columns for each report. Headers must be in the first row. Dates can be ISO, day/month/year or month/day/year, selected explicitly. Excel formulas are not recalculated; export confirmed values first.
How does this differ from a procurement platform?
This is a retrospective review of files you already saved. It does not contact suppliers, update an ERP, track live shipments or replace an existing change-history system. If your current system already gives you this trail, use that.
Where do my files and feedback go?
Report contents are processed locally and are not uploaded. Feedback is sent to our server only when you submit it, and can be read by the site owner. Anonymous usage events contain no filenames, dates, IDs or file contents. Privacy details.