Choose Plain if you need
- Integration with Slack, Linear or Jira. We haven't found them on Trengo's website.
- SOC 2, HIPAA or SSO. We haven't found them on Trengo's website.
At a glance
- Both offer a free trial (Plain: 7 days, Trengo: length not stated).
- Plain's lowest paid plan is Foundation at $45, as of October 28, 2026.
- Trengo's lowest paid plan is Boost at €299 per month billed annually, as of October 28, 2026.
- Both work with Salesforce and HubSpot.
- Only Plain lists SOC 2, HIPAA and SSO.
- Only Trengo lists GDPR.
- Plain has a public API. We haven't confirmed one for Trengo.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose Trengo if you need
- Integration with Shopify, WooCommerce or Pipedrive. We haven't found them on Plain's website.
- GDPR. We haven't found it on Plain's website.
Plain
Nobody has reviewed Plain yet. Its rating shows once it has 3 reviews.
Review Plain
Trengo
Nobody has reviewed Trengo yet. Its rating shows once it has 3 reviews.
Review TrengoThe facts
- What it does
- PlainPlain is the AI support stack built for B2B teams.
- TrengoWhatsApp, email, live chat, social and voice in one shared inbox, with AI handling repetitive questions.
- Free plan
- PlainNot confirmed
- TrengoNot confirmed
- Pricing
- PlainPer user, monthly, billed annually
- TrengoNot confirmed
- Paid plans from
What they share
From the platforms and integrations each website lists.
Integrations
Both
- Salesforce
- HubSpot
Only Plain
- Slack
- Linear
- Jira
Only Trengo
- Shopify
- WooCommerce
- Pipedrive
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between Plain and Trengo yet.
Used either of them?
Your review makes this comparison better for the next person. Review Plain or review Trengo.