Lean PlanDo Flow vs MPP File Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lean PlanDo Flow
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With Lean PlanDo Flow, you can start digitising your Safety, Quality, Inspection and Design workflows. It provides all the tools to customise your form and the workflow for execution. Lean PlanDo Flow applies lean principles for continual improvement to help teams improve their processes with insightful dashboards and reports. LeanPlanDo Flow modules: Safety Build a safety culture with digital safety forms and workflows across your project teams. Quality Improve the quality effortlessly and collaborate seamlessly with your project teams with digital quality management system. Inspection Perform thorough inspections and improve progressively with insightful dashboards and reports. Design Coordinate seamlessly with design workflows and safeguard your important documents on a secure cloud
MPP File Viewer
View and inspect Gantt charts, tasks, and resources from Microsoft Project and Primavera P6 schedule files on your Apple devices. Export project information as PDF or CSV for easy sharing. Files are processed locally for privacy.
- Open MPP, MPT, MSPDI, XER, P6 XML, and MPX files
- Inspect Gantt charts, tasks, and resources
- Browse task hierarchy
- Navigate pinch-to-zoom Gantt timeline
- Export as PDF or CSV
- Print Gantt charts
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Open Microsoft Project and Primavera P6 schedules on Mac, iPhone, and iPad and inspect their Gantt charts, tasks, and resources. Export a PDF or CSV when you need to share the project information. READ THE SCHEDULE - Browse and search the task hierarchy - Navigate a pinch-to-zoom Gantt timeline - Inspect dates, durations, hierarchy, and relationships when present - Review resources and assignments when present - Share a PDF report, the Gantt chart as PDF or image, or a task-table CSV - Print the Gantt chart OPENS THESE FILES - Microsoft Project MPP files (MPP8, MPP9, MPP12, MPP14) and MPT templates - Microsoft Project XML (MSPDI) - Primavera P6 XER exports and P6 XML - MPX (Microsoft Project Exchange) PRIVATE BY DESIGN Files are processed locally on your device. GanttPeek has no account, advertising, analytics SDK, cloud parser, or activation server. It reads only the file you select and never writes back to it. EXPLORE SAFELY The fictional Harbor Studio Launch schedule is included with every install, so you can explore the interface and exports before opening a private file. FORMAT NOTES The MPP parser accepts the MPP8, MPP9, MPP12, and MPP14 binary families, including the shared Project 16.x / MPP14 family used by Project 2021, Project 2024, and the Microsoft 365 desktop client. Password-protected MPP files are not supported. Available fields depend on the format: binary MPP files expose fewer details than Project XML or Primavera files, and every gap is disclosed inside the app. GanttPeek is read-only and is not a certified scheduling or contractual-verification system. ONE PROJECT FREE Open one real project with every viewing and export tool. GanttPeek Pro opens every project, with an optional monthly or yearly subscription or a one-time lifetime purchase. GanttPeek is independently developed by Eutopix Labs and is not affiliated with, endorsed by, sponsored by, or certified by Microsoft or Oracle. Primavera is a registered trademark of Oracle. Terms of Use: https://ganttpeek.com/terms/ Privacy Policy: https://ganttpeek.com/privacy/
Screenshots
Verdict
The clearest difference is update cadence: MPP File Viewer at every 5 days against Lean PlanDo Flow's every 2 months. Lean PlanDo Flow's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Lean PlanDo Flow ships an update every 2 months, MPP File Viewer every 5 days. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.
| Parameter | Lean PlanDo Flow | MPP File Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 21 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Lean Station Pte Ltd | EUTOPIX LABS |
In-app purchases
Lean PlanDo Flow
No in-app purchases
MPP File Viewer
No in-app purchases







