A side-by-side look at scores, pricing, features and integrations to help you pick the right retrospective tool.

Rebranded twice — Metro Retro became Ludi, now Spreo; the playful retro whiteboard lives on
Metro Retro was a fun, freeform online whiteboard built for sprint retrospectives, known for its playful templates, timer and engagement features. The product has since been renamed twice by its maker, Deqo Software Limited: to Ludi on 4 August 2025, then to Spreo on 1 July 2026 after a trademark cease-and-desist. The metroretro.io domain now 301-redirects straight to spreo.io. If you are searching for Metro Retro, the product you want is Spreo; the original Metro Retro brand and domain are no longer maintained.
Full review →
Your team's favourite way to retro
RetroFlow is a free, no-signup retrospective board built by solo developer Prashant Meena, with colourful boards, real-time collaboration, 11 ready-made templates plus a custom board builder, anonymous feedback, unrestricted upvoting, drag-to-move between columns, action items and PDF/Excel export. Participants join a shared link in one click with no account; the whole product is free with no paid tiers or locked features. The board is desktop-only — any viewport under 768px is blocked outright.
Full review →Metro Retro scores 3.0 overall and is best for searchers who remember Metro Retro and need to know where it went — the product now ships as <strong>Spreo</strong>. Go there, or to a dedicated retro platform, instead. It offers custom pricing.
RetroFlow scores 3.4 overall and is best for small or ad-hoc teams on laptops who want a genuinely free, zero-friction retro board they can share with one link — no signup, no payment and no setup, accepting that there is no timer, no phone support, no integrations, no AI and no enterprise controls. It offers a free tier.
Metro Retro leads on fun factor, integrations, open platform and enterprise-grade. RetroFlow leads on ease of use and value.
Across our eight scoring dimensions, RetroFlow edges ahead with an overall score of 3.4. That said, the right pick depends on your team — see the dimension-by-dimension breakdown below.
| Detail | Metro Retro | RetroFlow |
|---|---|---|
| Category | Whiteboard | Retrospectives |
| Team size | Small | Small |
| Free tier | No | Yes |
| Free limit | Everything is free — all 11 templates, custom boards, saved layouts, real-time collaboration, anonymous feedback, unlimited upvoting, action items and PDF/Excel export, with no account required to join a board and no paid tier to upgrade to | |
| Starting price | Free | Free |
| Est. 3 teams × 8 people | N/A — brand retired; see the Spreo listing | Free (no paid tier) |
| Enterprise | No | No |
| Founded | — | — |
| HQ | United Kingdom | — |
| Data residency | — | — |
| Languages | English only | English only |
| Export formats | PDF · CSV · HTML · Markdown · JSON · Jira | PDF · Excel |
| Features | 7 | 8 |
| Integrations | 0 | 0 |
Side-by-side checklist across features, integrations and security. Hover a note for details.
| Capability | Metro Retro | RetroFlow |
|---|---|---|
| Features | ||
| Custom templates | — | ✓note |
| Anonymous input | — | ✓note |
| Health Checks | — | — |
| Action tracking | — | ✓note |
| Async mode | — | — |
| Whiteboard | ✓ | — |
| Independent voting | ✓ | ✓note |
| Polling | — | — |
| Icebreaker games | — | — |
| Agile Estimations | — | — |
| Team Kudos | — | — |
| AI grouping/clustering | — | — |
| AI action items | — | — |
| AI Summaries | — | — |
| Team Insights | — | — |
| In-meeting AI assistant | — | — |
| Action dashboard | — | — |
| Integrations | ||
| Asana | — | — |
| Azure DevOps | — | — |
| Basecamp | — | — |
| ClickUp | — | — |
| Confluence | — | — |
| GitHub | — | — |
| GitLab | — | — |
| Jira | — | — |
| Linear | — | — |
| Microsoft Teams | — | — |
| Monday.com | — | — |
| Notion | — | — |
| Shortcut | — | — |
| Slack | — | — |
| Trello | — | — |
| Security & Privacy | ||
| SOC 2 | — | — |
| GDPR | — | — |
| SSO / SAML | — | — |
| SCIM provisioning | — | — |
| ISO 27001 | — | — |
| On-premises | — | — |
| Public API | — | — |
| Webhooks | — | — |
| MCP server | — | — |
Not sure which to pick? Read our guide on how to choose a retrospective tool.