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 If you are searching for Metro Retro, the product you want is Spreo; the original Metro Retro brand and domain are no longer maintained.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 →
Measure what ships and sticks
Simyl Flow is an outcomes measurement platform for engineering teams in which the retrospective is one of five linked ceremonies (planning poker, standups, demo prep, retros, coaching). Retro boards are pre-populated with six sprint metrics pulled from Jira, Linear, GitHub and CI, AI generates candidate cards from the data, and unfinished action items carry forward — all feeding a six-dimension team health score tracked sprint over sprint.
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.
Simyl Flow scores 5.4 overall and is best for engineering orgs that already run retros and want them wired into delivery data — teams asking whether last sprint's improvement actually moved cycle time, review latency or change-failure rate, rather than teams shopping for a better sticky-note board. It offers a free tier.
Metro Retro leads on fun factor. Simyl Flow leads on ease of use, retro toolkit, value, AI & insights, integrations, open platform and enterprise-grade.
Across our eight scoring dimensions, Simyl Flow edges ahead with an overall score of 5.4. That said, the right pick depends on your team — see the dimension-by-dimension breakdown below.
| Detail | Metro Retro | Simyl Flow |
|---|---|---|
| Category | Whiteboard | All-in-One Agile |
| Team size | Small | Mid-market |
| Free tier | No | Yes |
| Free limit | 1 team, 10 stakeholders, 2 retros + 2 poker sessions/month, 1 integration, 90-day retention, CSV export | |
| Starting price | Free | $29/team/mo |
| Est. 3 teams × 8 people | N/A — brand retired; see the Spreo listing | $87/mo (Pro — flat $29 per team × 3 teams; $72/mo billed annually) |
| Enterprise | No | Yes |
| Founded | — | 2024 |
| HQ | United Kingdom | — |
| Data residency | — | United States |
| Languages | English only | English only |
| Export formats | PDF · CSV · HTML · Markdown · JSON · Jira | CSV |
| Features | 7 | 24 |
| Integrations | 0 | 9 |
Side-by-side checklist across features, integrations and security. Hover a note for details.
| Capability | Metro Retro | Simyl Flow |
|---|---|---|
| Features | ||
| AI Summaries | — | ✓ |
| AI grouping/clustering | — | — |
| AI action items | — | — |
| Action tracking | — | ✓ |
| Team Insights | — | ✓note |
| Polling | — | — |
| Action dashboard | — | ✓ |
| Custom templates | — | ✓ |
| Anonymous input | — | — |
| Independent voting | ✓ | ✓ |
| Async mode | — | ✓note |
| Agile Estimations | — | ✓note |
| Health Checks | — | ✓note |
| Team Kudos | — | ✓note |
| Whiteboard | ✓ | — |
| Integrations | ||
| Asana | — | — |
| Azure DevOps | — | — |
| Basecamp | — | — |
| ClickUp | — | ✓note |
| Confluence | — | — |
| GitHub | — | ✓note |
| GitLab | — | ✓note |
| Jira | — | ✓note |
| Linear | — | ✓note |
| Microsoft Teams | — | ✓note |
| Monday.com | — | — |
| Notion | — | ✓note |
| Shortcut | — | ✓note |
| Slack | — | ✓note |
| Trello | — | — |
| Security & Privacy | ||
| SOC 2 | — | ✓note |
| GDPR | — | ✓ |
| SSO / SAML | — | ✓note |
| SCIM provisioning | — | — |
| ISO 27001 | — | ✓note |
| On-premises | — | ✓note |
| Public API | — | — |
| Webhooks | — | — |
| MCP server | — | ✓ |
Not sure which to pick? Read our guide on how to choose a retrospective tool.