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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Retro Rabbit
4.4Slack-first retrospectives with async note capture
Retro Rabbit is a Slack-native retrospective tool: the team drops notes into a Slack channel or the web app all sprint long, then runs the retro on a live synced board with drag-to-group, dot voting, a shared timer and assignable action items that carry over to the next retro. The CarrotIQ AI layer is gated to the $40/team/month Pro AI plan. Four-person vendor, Slack is the only integration, and there is still no public changelog.
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).
Retro Rabbit scores 4.4 overall and is best for slack-centric agile teams that want retro notes captured continuously through the sprint and a lightweight live or async board — and that don't need Jira, health checks or a procurement checklist. It offers paid plans from $30/team/mo.
NimbleRetro leads on open platform and enterprise-grade. Retro Rabbit leads on ease of use, retro toolkit, value, fun factor, AI & insights and integrations.
Across our eight scoring dimensions, Retro Rabbit edges ahead with an overall score of 4.4. That said, the right pick depends on your team — see the dimension-by-dimension breakdown below.
Scores compared
| Detail | NimbleRetro | Retro Rabbit |
|---|---|---|
| Category | Retrospectives | Retrospectives |
| Team size | Small | Small |
| Free tier | No | No |
| Free limit | Free trial only; no permanent free tier published for the retro module. The suite pricing page's only $0 plan (10 users / 10 projects) sits in a tier table hidden on every device, and Retrospectives appear in neither the live tier table nor the suite's full feature-comparison table | 14-day free trial, no credit card required |
| Starting price | $15/mo (up to 20 users) | $30/team/mo |
| 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 | $90/mo |
| Enterprise | Yes | Yes |
| Founded | 2002 | — |
| HQ | Cupertino, CA, United States | Boston, United States |
| Data residency | United States | United States |
| Languages | English only | English only |
| Export formats | — | CSV · Excel · PDF |
| Features | 21 | 21 |
| Integrations | 4 | 1 |
Feature & integration comparison
Side-by-side checklist across features, integrations and security. Hover a note for details.
| Capability | NimbleRetro | Retro Rabbit |
|---|---|---|
| Features | ||
| Custom templates | ✓ | ✓ |
| Anonymous input | ✓ | ✓ |
| Health Checks | — | — |
| Action tracking | ✓ | ✓ |
| Async mode | — | ✓ |
| Whiteboard | — | — |
| Independent voting | ✓note | ✓ |
| Polling | ✓note | — |
| Icebreaker games | — | — |
| Agile Estimations | — | — |
| Team Kudos | — | — |
| AI grouping/clustering | — | — |
| AI action items | — | ✓note |
| AI Summaries | — | ✓note |
| Team Insights | — | — |
| In-meeting AI assistant | — | — |
| Action dashboard | ✓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 | ✓ | — |
| SSO / SAML | ✓note | ✓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, Inc. holds its own SOC 2 Type II, ISO/IEC 27001:2022 and ISO/IEC 42001:2023 attestations, with reports on request through its trust center, and supports SAMLv2/ADFSv3 SSO
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
Retro Rabbit — pros
- + Genuine Slack-first capture — notes land in the channel throughout the sprint, so the board opens full instead of starting with silent writing
- + Board covers the basics properly: drag-to-group with editable group names, dot voting with a configurable 1–50 vote budget, a shared pause/resume timer, and a per-user anonymity toggle
- + Action items carry forward — a dedicated <em>Old / Unresolved Items</em> tab plus per-room and per-person trackers, with Slack reminders to assignees
- + A GIPHY picker on notes that the marketing site never mentions — the one bit of levity on an otherwise plain board
- + Flat $30/team/month with unlimited users (3 teams of 8 = $90/mo), and CSV/XLSX/PDF export on every tier including Starter
Retro Rabbit — cons
- − Slack is the only integration — no Jira, Teams, Confluence, GitHub, Linear or Azure DevOps, and no public API, webhooks or MCP
- − No health checks, team radars or sentiment tracking; the only longitudinal view is a notes-per-day bar chart per room
- − AI is two calls — a per-retro summary and one action-item suggestion. The site's <em>intelligent note grouping</em> claim has no counterpart in the shipped web app
- − Enterprise controls are thin: SSO/SAML is Enterprise-tier only, no SCIM, no audit logs and no SOC 2 of its own. The privacy policy carries no GDPR or CCPA commitments and says retro feedback is not shared with third parties, the Slack Marketplace listing answers <em>uses large language models: no</em> and <em>has a dedicated security team: no</em>, and neither says where CarrotIQ processes notes
- − No free tier and no public changelog, from a four-person vendor whose marketing site has not changed since early 2025
Keep comparing
Other NimbleRetro comparisons
Other Retro Rabbit comparisons
Not sure which to pick? Read our guide on how to choose a retrospective tool.