NimbleRetro
3.8Time-boxed retros with 5-Why root cause analysis
NimbleRetro is the retrospective module inside NimbleWork's broader Nimble agile platform. It runs a time-boxed retro through Icebreaker, Ideate, Group, Vote, Discuss and Feedback stages, ending in a 5-Why root cause drill-down on whatever the team voted up. Action items created in the Discuss stage convert directly into Nimble work items (user stories, cards) in the project the retro was created from. There is no separate purchase — Retrospectives ship to every Public SaaS Nimble account by default.
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RetroTool
3.2Anonymous online retrospectives, no login required
RetroTool is a low-friction online retrospective board built by u2i, a ~60-person NY/Kraków software agency, as an internal tool it later opened up. Free anonymous retros run from a unique URL with no signup; paid tiers add private boards, team management, configurable retention and zero-knowledge encryption. The product works and is still used daily, but nothing has shipped visibly since 2024.
Full review →Summary
NimbleRetro scores 3.8 overall and is best for small agile teams already inside the Nimble suite that want a structured, time-boxed retro ending in a real root cause analysis, with the follow-up landing in the same backlog they already work from. It offers paid plans from $15/mo (up to 20 users).
RetroTool scores 3.2 overall and is best for small or ad-hoc teams who want a free, no-signup retro board with private drafting, secret voting and a dozen standard templates — provided you're comfortable running on a tool whose last visible build is dated May 2024. It offers a free tier.
NimbleRetro leads on integrations, open platform and enterprise-grade. RetroTool leads on ease of use and value.
Across our eight scoring dimensions, NimbleRetro edges ahead with an overall score of 3.8. That said, the right pick depends on your team — see the dimension-by-dimension breakdown below.
Scores compared
| Detail | NimbleRetro | RetroTool |
|---|---|---|
| Category | Retrospectives | Retrospectives |
| Team size | Small | Small |
| Free tier | No | Yes |
| Free limit | Free trial only; no permanent free tier published for the retro module. A $0 Nimble suite plan (10 users / 10 projects) appears in a secondary table on the suite pricing page, but Retrospectives appear neither there nor in the suite's full feature-comparison table | Anonymous boards; unlimited cards, columns, action points and participants; 3 basic templates; private sections, secret voting, dot-vote limits, timer, grouping, action points with owner and due date; Markdown export; 12-month retention. A free registered 'Participant' account (not advertised on the plans page) adds access to private retros and cross-device drafts |
| Starting price | $15/mo (up to 20 users) | $10/team/mo ($100/team/yr billed annually) |
| Est. 3 teams × 8 people | $240/mo (24 users x $10/user/mo Nimble Team tier); NimbleRetro's own $15/mo plan caps at 20 users and no larger standalone tier is published | $30/mo (Individual — 3 teams x $10/team/mo, unlimited members per team; $300/yr = $25/mo billed annually) |
| Enterprise | Yes | No |
| Founded | 2002 | — |
| HQ | Cupertino, CA, United States | Poland |
| Data residency | United States · European Union | — |
| Languages | English only | English only |
| Export formats | — | Markdown · Confluence |
| Features | 19 | 19 |
| Integrations | 4 | 0 |
Feature & integration comparison
Side-by-side checklist across features, integrations and security. Hover a note for details.
| Capability | NimbleRetro | RetroTool |
|---|---|---|
| Features | ||
| Custom templates | ✓ | ✓note |
| Anonymous input | ✓ | ✓note |
| Health Checks | — | — |
| Action tracking | ✓ | ✓ |
| Async mode | — | — |
| Whiteboard | — | — |
| Independent voting | — | ✓ |
| Polling | ✓ | — |
| Icebreaker games | — | — |
| Agile Estimations | — | — |
| Team Kudos | — | — |
| AI grouping/clustering | — | — |
| AI action items | — | — |
| AI Summaries | — | — |
| Team Insights | — | — |
| In-meeting AI assistant | — | — |
| Action dashboard | ✓note | ✓note |
| Integrations | ||
| Asana | — | — |
| Azure DevOps | — | — |
| Basecamp | — | — |
| ClickUp | — | — |
| Confluence | — | — |
| GitHub | ✓note | — |
| GitLab | ✓note | — |
| Jira | — | — |
| Linear | — | — |
| Microsoft Teams | ✓note | — |
| Monday.com | — | — |
| Notion | — | — |
| Shortcut | — | — |
| Slack | ✓note | — |
| Trello | — | — |
| Security & Privacy | ||
| SOC 2 | ✓note | — |
| GDPR | ✓ | ✓note |
| SSO / SAML | ✓note | — |
| SCIM provisioning | — | — |
| ISO 27001 | ✓note | — |
| On-premises | — | — |
| Public API | ✓note | — |
| Webhooks | ✓note | — |
| MCP server | ✓note | — |
NimbleRetro — pros
- + 5-Why root cause analysis is a <em>built-in retro stage</em>, not an afterthought — almost no other retro tool ships one
- + Anonymous voting plus a facilitator-set timer on every stage keeps a 60-minute retro on the rails
- + Action items convert directly into Nimble work items, so follow-up lands in the same backlog the team already works from
- + Included by default in every Public SaaS Nimble account — no separate purchase, no tier upgrade, available to all user roles
- + NimbleWork runs annual SOC 2 Type II and ISO/IEC 27001:2022 audits, supports SAMLv2/ADFSv3 SSO, and publishes a separate EU data region
NimbleRetro — cons
- − The dedicated NimbleRetro iOS and Android apps have been delisted from both the App Store and Google Play, while the product pages still advertise them
- − No health checks, no recurring retros, no async mode, and no documented export of a retro board in any format
- − The platform surface — REST API, outgoing webhooks and the new Nimble MCP server — reaches Nimble cards only; none of it touches a retro, and no AI runs on retro data despite the Retrium comparison page ticking <em>Generative AI</em>
- − Participants are limited to members of the Nimble project the retro was created from, and the module is unavailable outside Public SaaS
- − No rate card: the only NimbleRetro-specific price NimbleWork publishes ($15/mo for up to 20 users) sits on a blog post, and the retro 'pricing' page is a product page with a demo form
RetroTool — pros
- + Genuinely free anonymous retros with no account required
- + Three-click setup — unique URL, share, run
- + Per-column Private Sections keep drafting unbiased until people publish
- + Zero-knowledge encryption with custom passwords on the Company plan
- + Per-team flat pricing ($10 or $20/team/mo, 15%+ off annually) with <em>unlimited members per team</em>, not per-seat
RetroTool — cons
- − <strong>Dormant</strong>: the marketing build is dated 28 May 2024, the app still runs Meteor 2.9, the blog stopped in March 2022 and the legal pages are unchanged since August 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, async mode, or cross-team reporting
- − Export is Markdown only (plain or Confluence-flavoured), copied to the clipboard
- − Most templates, image cards, named participants, private invite-only boards and zero-knowledge encryption sit behind paid tiers
- − Not SOC 2; Google sign-in only, with no SAML SSO, SCIM or audit logs
Keep comparing
Other NimbleRetro comparisons
Other RetroTool comparisons
Not sure which to pick? Read our guide on how to choose a retrospective tool.