Crystal (often searched as Crystal Knows) builds a personality profile from six assessments, coaches you daily, and predicts the DISC style of people you view on LinkedIn, Salesforce and HubSpot. The free account never expires but allows 10 contacts and 10 LinkedIn reads; Premium costs $49 a month or $490 a year.
The bottom line
A free personality profile for you, and $49 a month for unlimited reads on other people.
6.8
Our score
6.8 / 10
Conversion Gems editorial verdict
Free; Premium $49/mo or $490/yr
Features7/10
7 - six assessments, AI coaching, a LinkedIn/Salesforce/HubSpot extension, team reports and an API.
Value6/10
6 - free plan never expires, but unlimited contact reads cost $49 a month per person.
Ease of use8/10
8 - free sign-up and a Chrome extension that works on profiles you already open.
Ecosystem7/10
7 - LinkedIn, Salesforce and HubSpot via the extension, plus a REST API and MCP server.
Support5/10
5 - a 20+ guide library and demos for business plans; no live support channel verified on the pricing page.
What it really is
A personality-profile app that now leads with AI coaching but still predicts the DISC style of contacts on LinkedIn and in CRMs.
Our take
Crystal is easy to try: the free account keeps all six assessments and never expires. The useful sales part, reading other people's profiles, is capped at 10 contacts and 10 LinkedIn reads until you pay $49 a month. Treat predictions about others as a prompt for how to open a conversation, not as fact.
Why we rate it
A generous free tier and personality insights inside the tools salespeople already use.
The catch
Unlimited contact reads cost $49 a month per person, and profiles of others are predictions, not tests.
Best for
B2B sales reps
Recruiters
Managers running DISC team reports
Not good for
Teams that need contact data or email sequences
Anyone wanting validated assessments of other people without their input
Friction report
Time to value
Minutes: take an assessment or open a LinkedIn profile with the extension.
Scale breakpoint
The 11th contact or LinkedIn read on the free plan.
Walled garden
Low: extension works in LinkedIn, Salesforce and HubSpot, and an API and MCP server are available.
Crystal pricing
Plan
Price
Key limits
Free
$0, never expires
All 6 assessments, 10 contacts, 10 LinkedIn reads, 6 days of coaching
Pay per profile created and per read; prompt endpoint free
From Crystal's pricing page, checked 4 October 2026.
Crystal Assessments plans
Tier
Monthly
Yearly
Participants and reports per month
Basic
$99
$990
5
Pro
$249
$2,490
20
Max
$499
$4,990
50
From Crystal's pricing page, checked 4 October 2026. All tiers include DISC or all six frameworks and the same report types.
Frequently Asked Questions
Crystal has a free plan that never expires. Premium costs $49 a month or $490 a year, and Premium for Teams is $49 per seat per month. Team assessment plans run from $99 to $499 a month, and Buyer Profiles is quote-based (checked 4 October 2026).
Yes, there is a free account with all six assessments, your full profile, up to 10 contacts and 10 LinkedIn reads. Unlimited LinkedIn reads, contact briefs and daily coaching need Premium.
Partly. The homepage now presents Crystal as an AI coach, but the Chrome extension still predicts personality and gives call and meeting tips in LinkedIn, Salesforce and HubSpot, and Buyer Profiles and a Personality API are sold to teams.
For you, it uses the assessments you take. For other people, it predicts a DISC profile from public information such as a LinkedIn profile, so treat those results as an estimate, not a test result.
Conversion Gems is a review site, not Crystal. Sign in on Crystal's own site at crystalknows.com/app/login.
Crystal (Crystal Knows) alternatives
Other sales tools from our reviews:
Apollo.io: Prospecting database with contact data, a Chrome extension and email sequences.
Mixmax: Email tracking, scheduling and sequences inside Gmail and Outlook.
Yesware: Email tracking and templates for sales teams in Gmail and Outlook.
