CRM Migration Checkerby Show Up LondonFree local evaluation · v1.3.4
Compare two CSV exports on your own computer. Inspect missing records, duplicate IDs and selected field differences, then open the evidence behind each finding.
Python 3.10+ · macOS or Windows launcher · No account or payment required
The evaluation has no expiry. CRM files are processed locally; this website has no upload facility.
Choose the help you need
The download lets you evaluate the comparison yourself. A paid pilot adds agreed scope, human review and a handover.
Run the sample, then assess whether suitable CSV exports and retained identifiers fit the checker.
Agree the rules with Serhat, investigate the exceptions and receive evidence for your selected scope.
Written quote confirms scope, availability and the final total, including any applicable tax.
Set up on your computer
Check the sample before working with customer exports. It gives you known findings to recognise and a safe way to learn the report.
Compare with the website’s sample evidence →Save the ZIP and extract the whole folder. Open the included README. Keep the package files together.
With Python 3.10 or later installed, open a terminal in the extracted folder. On macOS, run bash Start_Mac.command; it selects a compatible installed Python. On Linux, run python3 launch.py; on Windows, run py -3 launch.py. Included macOS and Windows convenience launchers offer another route. Follow the README if your system asks for permission.
Use the included sample and inspect its report. Read the matching rules, compared-record count and exceptions together.
Use only exports you are authorised to process. Confirm retained unique IDs, selected fields and expected transformations first. Keep both inputs and generated reports in an appropriate local location.
The useful question is what was compared under which rules. A zero-findings report cannot establish that an entire migration succeeded.
Duplicate retained identifiers prevent a reliable one-to-one comparison. Investigate them and rerun; do not treat skipped records as passes.
Agree transformations explicitly. Exact text and decimal equality answer different questions; a changed value may be legitimate only under the intended rule.
Supplied exports cannot establish live permissions, attachment access, workflow behaviour or whether the extraction included every required record.
Release information
Version 1.3.4 · local evaluation package prepared 25 October 2026. Check the file details and tested environment before running it.
New in 1.3.4: The report is restyled to match the published sample report, with a tighter content security policy. The comparison engine and handling limits are unchanged from 1.3.3, which added cancellation while loading or comparing, retry with completed reports kept, accepted-change clearing when a compared field changes, and Mac startup that skips unsupported Python installations.
SHA-256eee51a8c43b2ef74ad9fd5379f80134d789e5bbd9f4bf47bd37fe780adcd8817
Mac launcher checks included skipping system Python 3.9.6 and using Homebrew Python 3.14.7. Reports regenerated from the published sample inputs match the published sample reports exactly. The Linux guest and Python 3.10 and 3.12 checks run for 1.3.3 were not repeated for this release, and desktop browser acceptance of this final archive has not been repeated. Linux, Linux x86, native Windows execution, Finder launch and Gatekeeper behaviour have not been tested for 1.3.4. The metadata records the full verification coverage.
The evaluation download is ungated and has no expiry. You can contact Serhat if you want to discuss the tool, an agency collaboration or a reviewed pilot.
It works from CSV files. It does not log in to a CRM, move records or repair data. Retained source identifiers and supported comparison rules are essential to a useful check.
You need Python 3.10 or later and permission to run the package. Follow your organisation’s software and data-handling rules. The package includes launchers and source; it is not a signed native app or a browser-store extension.
The evaluation processes input files on your computer and writes local reports. The website does not accept CSV uploads. You control any later sharing of inputs or reports; reports may contain values from your exports.
You can evaluate the workflow on authorised exports. Your agency retains responsibility for the scope, rules, interpretation, client permissions and acceptance. Discuss a scoped second review or overflow check if human review would help.