Cognism reviews: what users praise and where they push back

Cognism scores 4.5 out of 5 on G2 and 3.0 on Trustpilot, a smaller gap than most contact data tools. Many of its recent one-star Trustpilot reviews come from people who were never customers; the customer reviews there are more mixed than angry, often three or four stars with a specific reservation.

• UK and European mobile numbers. Several reviewers call it the best mobile data they have used for UK and European prospecting.
• A clean interface. Many five-star reviews praise how simple it is to learn.
• The Chrome extension and integrations. Reviewers like working from LinkedIn and pushing records into their CRM.
• Data handling in Europe. Customers cite its approach to European data rules as a reason they bought.
• Support, for some. Several reviewers thank their account executive or support team.

Data freshness is the most common customer complaint, followed by price and coverage outside Europe. The table counts the 14 customer records we read; a review can raise more than one theme.

Cognism is strongest in the UK and Europe, and reviewers selling into the US are its most critical group. In the reviews we read, US customers in 2024 said volumes were too low for enrichment to help and that some emails marked verified were wrong; a 2026 reviewer praised its mobile accuracy but noted weaker coverage outside Europe. If the US is your main market, test the same 50 accounts in Cognism and one US-centred database before you sign.

Cognism does not publish prices. Its pricing page (checked November 6, 2026) describes a credit model: each seat comes with an allocation of credits, one credit reveals one contact, viewing a contact you already revealed is free, and the same credits work across the prospecting platform, enrichment and the API. Extra credits can be bought at any time. Ask for the contract term, the renewal notice period and the credits per seat in writing.

Cognism tends to suit you if

• You sell mainly into the UK and Europe and call prospects on mobile numbers.
• Several reps will use it daily, so an annual contract is spread across a team.

Look elsewhere if

• The US, Latin America or the Nordics are your main markets.
• You need to know which accounts qualify and why now, not only who to call.

Other options are compared in our Cognism alternatives guide.

SalesOne does not sell a contact database or credits. S1 deep research agents research each company against your ideal customer profile and keep only the ones with a reason to act now, citing dated public sources. Across October 2026 production runs they decided on 1,051 companies and kept 249; every one of the 802 turned down keeps the rule it failed.

• No seats, credits or per-lookup charges.
• The buying committee for each account, about four people, 95% with a dated public source.
• Contact details from 20+ data providers, only for the people your team picks.
• A person approves every message, and every approval is recorded with who gave it.