Diagramium vs RationalPlan
Diagramium
diagramium.comRationalPlan
rationalplan.comSide by side
| Figure | Diagramium | RationalPlan |
|---|---|---|
| Price from | Free | $4/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 11 |
| Spec score · Gantt Chart Software | 7.7 (#28) | 8.8 (#4) |
| Intended users | The About page names developers, product managers, teachers, analysts, and support teams among its intended users. | The company describes Cloud as suitable for individuals and companies, while its on-premise products include single-project, multi-project, and centralized server options. |
| Privacy | The privacy policy says diagram content is not uploaded, the app sets no cookies, and it uses no third-party analytics; it also describes anonymous gallery engagement counts and export-format totals. | The privacy policy says Stand By Soft uses processors that implement GDPR requirements and does not sell or trade private information received through product inquiries. |
| Support | The About page directs questions and feedback to a sign-in-required contact form or [email protected]. | The maker promises responses to support questions within 24 working hours and bundles priority support for one year with a license. |
Plans
RationalPlan
- Cloud FreeFree
- FREEFree
- Cloud Beginner$4 a month
- Cloud Master$12 a month
- Cloud Production$19 a month
- Single Project$145, paid once
- Multi Project$288, paid once
- BEGINNERPrice not published
- MASTERPrice not published
- PRODUCTIONPrice not published
In their own words
Diagramium
Diagramium is a web-based Gantt chart maker for creating project schedules and presenting them step by step. Charts can include tasks, dependencies, milestones, progress, a highlighted critical path, and a Today marker. Timelines use calendar dates or project days with Daily, Weekly, or Monthly scales. Present mode reveals tasks sequentially and can add AI voice narration, subtitles, and speaker notes for each step. After loading, the browser editor works offline. Charts remain in browser storage and exported files; the privacy policy says content is not uploaded, no cookies are set, and no third-party analytics are used. PNG, SVG, and PDF exports do not require an account. Animated GIF, video, and animated SVG exports require a free Google sign-in account. Clearing site data can permanently delete unexported local charts.
RationalPlan
RationalPlan is project management software for scheduling work, allocating resources, tracking progress, estimating project costs, and managing budgets. Its tools include Gantt charts with dependencies and critical-path detection, portfolio management, resource leveling, cost tracking, reports, document management, calendars, and a Kanban board. RationalPlan says it can open and edit Microsoft Project files, and its Single Project product imports MS Project files. RationalPlan Cloud supports concurrent browser work with different access rights; the company says Cloud uses AWS for data hosting and processing. Project Server can be installed on a private network, and the company says its administrators cannot access hosted customer data. The free Cloud plan includes two projects, 100 tasks, 10 MB of storage, and two users. Free accounts inactive for 30 days are disabled, and accounts inactive for 60 days are deleted. Single and Multi trials offer full functionality with a 20-task limit and no stated time limit; the Server trial runs for 30 days without functional limits. Single Project costs $145, paid once, and Multi Project costs $288, paid once. A license includes one year of upgrades and priority technical support.