Plain vs Stonly
Plain and Stonly are both customer support tools. Plain is aimed at developers and small businesses, while Stonly is aimed at small businesses and enterprise. Both have a free plan.
Plain
Support tool built for B2B and technical teams
Stonly
Interactive guides and AI knowledge base for customer support teams
| Pricing | Freemium · $45 | Freemium |
| Starting price | $45/mo | Not published |
| Free plan | Yes | Yes |
| Free trial | 14 days | 14 days |
| Built for | Developers, Small businesses | Small businesses, Enterprise |
| Platforms | web | web |
| Country | GB · 2020 | FR · 2018 |
| Rating | — | — |
Choose Plain if
B2B and developer-focused SaaS.
- Built for B2B support in Slack
- Developer-friendly API
- Modern, fast UI
Look elsewhere if: High-volume consumer support (Zendesk, Gorgias).
Choose Stonly if
Customer support teams that handle complex, multi-step issues and want guided self-service plus consistent agent troubleshooting.
- Decision trees handle complex troubleshooting better than flat articles
- Same content serves customers, agents and AI answers
- Help desk integrations bring guides into the agent workspace
Look elsewhere if: Product teams primarily optimizing in-app onboarding and feature adoption metrics (Userpilot, Appcues, Pendo).
Plain vs Stonly pricing
Plain
- Foundation$45/user/moBilled annually; up to 5 seats, 1,000 AI credits/mo
- Horizon$99/user/moBilled annually; 3-10 seats, 2,500 AI credits, SLAs, Teams
- FrontierCustomMultiple workspaces, SSO/SCIM, HIPAA
Stonly
- Basic$0400 guide views/mo, 5 published guides, 1 team member
- Small BusinessQuoteUnder 100 staff; 4,000 guide views, 5 seats, 1 knowledge base
- EnterpriseCustomAI Agents, SSO, surveys, auto-translation, white label
Plain · Key features
- Unified inbox for Slack, Teams, email, Discord, chat
- Customer context via API
- Tiers, SLAs and routing
- AI triage and drafting
- Linear and Jira integration
- API-first architecture
Cons
- Per-seat pricing
- Less suited for B2C volume
- Younger product
Stonly · Key features
- Interactive step-by-step guides and branching decision trees
- Embeddable widget for in-app guides and product tours
- Knowledge base with versioning, review flows and scheduled publishing
- AI Answers and a conversational bot built on your guide content
- AI Agent Assist that summarizes tickets and drafts replies
- Knowledge Agents and Business Process Agents for automated support flows
Cons
- Paid prices are not published and require a sales call
- Guide-view limits can force plan upgrades as traffic grows
- Help desk integrations, AI Agents and SSO are Enterprise-only
Plain vs Stonly: FAQ
Do Plain and Stonly have a free plan?
Yes, both Plain and Stonly have a free plan; paid plans add more usage and features.