Both tools can clean phone numbers without uploading the contact file. The choice is the workflow you need: a focused phone-column review or a wider set of spreadsheet cleanup tools.
Vendor documentation checked . Features and plans can change.
| What you need | E164Flow | Sigmera |
|---|---|---|
| Main job | Phone-number validation, review and import preparation. | A suite for CSV cleanup, file conversion and charts, including a phone formatter. |
| Contact-file processing | In your browser. Account and billing requests are separate. | Sigmera states that cleaning runs in your browser without a file upload. |
| Phone workflow | Up to 10 selected phone columns; source IDs, separate extensions, review warnings and duplicate references. | Select a phone column, choose a default country, preview E.164 results and flagged numbers. |
| Free access | 25 pasted numbers without an account; a free account adds files and exports up to 50 rows. | Its published free plan includes unlimited rows and 3 downloads per month. |
| Paid access | Pro: €10 or US$10 per month before applicable taxes, up to 20,000 rows per file. | Download-based paid tiers. Check the current vendor terms before choosing a plan. |
You want to check several phone fields, keep IDs and extensions, review the problem rows and create a controlled CRM import file.
The CRM columns shortcut selects IDs, E.164 fields and extensions. You can rename headers and set their order; it does not connect to your CRM.
HubSpot import workflow Pipedrive import workflowChoose Sigmera when you want several kinds of CSV cleanup in one workspace, or its free download allowance covers your occasional phone-formatting task.
If a free tool already handles your file and review requirements, use it. Compare the exported result on a small sample before paying for a different workflow.
It does not enrich contacts, find new leads, verify reachability or ownership, merge records inside a CRM, or provide an API for unattended processing. Pro is limited to 20,000 rows per file.
Compare the source value, country, extensions and final headers in your own sample. Formatting a number does not prove that someone will answer it.
The Sigmera column summarizes the vendor’s published documentation. It is not a hands-on benchmark, and an unmentioned feature should not be read as unavailable.
This is an independent comparison. E164Flow is not affiliated with Sigmera.
Try 25 pasted numbers without an account, or use a free account for files and exports up to 50 rows.