Ludi
6.9Playful collaborative whiteboard for agile teams
Ludi (formerly Metro Retro, rebranded August 2025) is a visual agile collaboration whiteboard with 100+ templates spanning retros, planning poker, icebreakers and futurespectives. Its signature illustrated canvas and gadgets make ceremonies feel engaging, and a first AI feature — sticky-note clustering — shipped February 2026.
Full review →
RetroTool
4.4Anonymous online retrospectives, no login required
RetroTool is a low-friction online retrospective board built by NY/Poland software agency u2i as a side project. Free anonymous retros run from a unique URL with no signup; paid tiers add private boards, team management and longer retention. The product still works, but the site shows no shipped activity in years.
Full review →Summary
Ludi scores 6.9 overall and is best for agile teams who want retros, planning and workshops to feel visual and fun, with a solid Jira-backed delivery loop. It offers paid plans from $5/user/mo.
RetroTool scores 4.4 overall and is best for small or ad-hoc teams who want a free, no-signup retro board with secret voting and a few standard templates — provided you're comfortable using a tool that hasn't shipped visible updates in years. It offers a free tier.
Ludi leads on ease of use, retro toolkit, fun factor, AI & insights, integrations and enterprise-grade. RetroTool leads on value.
Across our seven scoring dimensions, Ludi edges ahead with an overall score of 6.9. That said, the right pick depends on your team — see the dimension-by-dimension breakdown below.
Scores compared
| Detail | Ludi | RetroTool |
|---|---|---|
| Category | Retrospectives | Retrospectives |
| Team size | Small | Small |
| Free tier | No | Yes |
| Free limit | 30-day free trial; boards become read-only when the trial expires | Anonymous boards, unlimited cards, columns, action points and participants; 12-month retention; basic facilitation |
| Starting price | $5/user/mo | $10/mo |
| Est. 3 teams × 8 people | $120/mo | $10/mo |
| Enterprise | Yes | No |
| Founded | 2020 | — |
| HQ | UK | Poland |
| Features | 33 | 13 |
| Integrations | 1 | 0 |
Feature & integration comparison
Side-by-side checklist across features, integrations and security. Hover a note for details.
| Capability | Ludi | RetroTool |
|---|---|---|
| Features | ||
| AI Summaries | — | — |
| AI grouping/clustering | ✓ note | — |
| AI action items | — | — |
| Action tracking | ✓ | ✓ |
| Team Insights | — | — |
| Polling | ✓ note | — |
| Action dashboard | — | ✓ |
| Custom templates | ✓ | ✓ note |
| Anonymous input | ✓ note | ✓ note |
| Independent voting | ✓ | ✓ |
| Async mode | — | — |
| Agile Estimations | ✓ | — |
| Health Checks | — | — |
| Team Kudos | ✓ note | — |
| Whiteboard | ✓ | — |
| Integrations | ||
| Asana | — | — |
| Azure DevOps | — | — |
| Confluence | — | — |
| GitHub | — | — |
| Jira | ✓ note | — |
| Linear | — | — |
| Microsoft Teams | — | — |
| Slack | — | — |
| Trello | — | — |
| Security & Privacy | ||
| SOC 2 | ✓ note | — |
| GDPR | ✓ | ✓ note |
| SSO/SAML/SCIM | ✓ note | — |
| ISO 27001 | — | — |
| On-premises | — | — |
| Data residency (US/EU) | ✓ note | — |
Ludi — Pros
- + Genuinely delightful, illustrated UI that energises in-person and remote retros
- + Broad template library (100+) covering retros, icebreakers, planning poker, futurespectives, planning and estimation
- + Solid two-way Jira integration: backlog refinement, estimation and issue creation in-board
- + Facilitator controls, private writing mode and shareable team spaces
- + First AI feature shipped Feb 2026 — Sort into Topics auto-groups stickies into labelled topics
- + EU-hosted (Amsterdam) on SOC 2 / ISO 27001 infrastructure; GDPR-aligned
Ludi — Cons
- − No async retro mode, no recurring or scheduled retros
- − No team health check or longitudinal pulse product; mood/radar work via whiteboard templates only
- − Integrations limited to Jira — no Slack, Teams, Confluence, GitHub, Linear or Azure DevOps
- − AI limited to one clustering feature — no summaries, action-item extraction, sentiment or coaching
- − No ongoing free plan; expired trials become read-only
- − SSO gated to Enterprise tier; no SCIM, audit logs or domain restrictions advertised
RetroTool — Pros
- + Genuinely free anonymous retros with no account required
- + Three-click setup — unique URL, share, run
- + Zero-knowledge encryption with custom passwords on Company plan
- + Per-team flat pricing ($10 or $20/team/mo) rather than per-seat
RetroTool — Cons
- − <strong>Apparently dormant</strong>: no blog, changelog or release notes; legal docs last updated 2020
- − No native integrations with Jira, Slack, Teams or any agile-stack tool
- − No AI features (clustering, summary, action extraction, sentiment)
- − No health checks, recurring retros, or cross-team reporting
- − Secret voting and private boards locked behind paid tiers
- − Not SOC 2; no SSO/SCIM/audit logs for enterprise buyers