Onplana Schedule: MPP Viewer

Onplana Schedule: MPP Viewer

XER Files and Gantt Editor

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Free

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Released
October 1, 2026
Updated
November 10, 2026

Features

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Onplana Schedule: MPP Viewer screenshot #10 for iPhone
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About

Onplana Schedule is a free app for iPhone and iPad that opens, edits and reschedules Microsoft Project .mpp files without Microsoft Project, and also opens Primavera P6 .xer, Project XML, ProjectLibre, GanttProject and Excel plans as a Gantt chart. Microsoft Project XML files open on your device with no internet connection. Other formats need one: they are uploaded to Onplana's servers to be converted, and the uploaded copy is deleted within 3 days, and removed from backups 7 days after that. How do I open an .mpp file on my iPhone? Tap Open a file and choose it in Files, or share it to Onplana Schedule from another app. The plan opens as a list of tasks or as a timeline, with the links, milestones and critical path. What is an .xer file? A schedule exported from Primavera P6. It opens as a plan and saves as Microsoft Project XML; the .xer file is never changed. What is the critical path? The chain of tasks with no float: if one slips, the finish moves. It is drawn in red, and Critical tasks only narrows the list to it. How do I check a schedule against the DCMA 14 points? Open Quality. The 14 checks, from logic and leads to CPLI and BEI, run on your device. Nothing is uploaded, and each finding shows its tasks. How do I compare two versions of a plan? Choose Compare with another version. The Changes view lists the tasks added, removed or changed. Edit on your iPhone Tap a task to change its name, start, finish, duration, percent complete and predecessors, add a subtask, or indent it. Drag a bar on the timeline, or select several tasks and change them together. Each change reschedules the linked tasks, and Undo takes it back. Save and share Save writes back to the file you opened in Files. A file opened as .mpp, or one sent from another app, saves as a new Project XML file where you choose, so the original is never overwritten, and a recovery copy is kept while you work. Share sends the plan as Project XML, the task table as CSV, or the chart as a PDF or picture. On iPad The full Gantt chart beside the task grid. Pinch to zoom, move a bar or draw a link with a finger, and work beside another app in Split View. Resource usage shows each resource's work by month, week or day. Also Ten built-in templates or a blank schedule, with no account. A free Schedule Health Check report by email. In nine languages. Generative AI Describe a project and Ask AI use generative AI, on Onplana's servers and an AI provider, only when you choose them. Describe a project writes a plan from what you type. Ask AI answers questions about the open plan and suggests changes you review before they apply; it needs an Onplana account and never sends the file. On iPad, Optimize with AI rewrites a copy of the plan you checked to level resources, compress the timeline or reduce risk. Review AI results before you rely on them. Report a problem through Feedback in Settings or support@onplana.com. Know what leaves your device A Microsoft Project XML file is uploaded only when you choose a health check or a publish. Before it uploads a file without an account, the app names the file and asks. Project ribbon commands Signed in to an Onplana organization whose plan includes them: Set baseline (Baseline and Baseline 1 to 10, with variance) and Move project, and on iPad also Links between projects, Subproject, Manage sprints and Schedule risk. What a file already carries shows for everyone. Share a copy Publish imports a copy into a free Onplana workspace (2 projects, 5 members) that your team opens in a browser. The original file is not changed. What it opens .mpp, .mpt, .mpx, .xer, Primavera P6 XML, Microsoft Project XML, ProjectLibre .pod, GanttProject .gan, Excel .xlsx and .csv.
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What's New in Onplana Schedule

1.1.1

November 10, 2026

What's new - App lock: in Settings > App lock, turn on Lock with fingerprint or face, and opening the app, or coming back after a minute away, asks for Face ID, Touch ID or the device passcode. Off by default. - On iPhone, the text follows Larger Text, up to 135%, and a list row grows with it, so a long name is never cut. - On iPhone, Home has Try a sample schedule: five sample plans in the app's language, costed from their rates, each opening to read with a note on what to look at. - Start from a template has five more plans: Project Schedule, Project Timeline, Construction Project, Agile Project and Project Tracker. - On iPhone, the look-ahead chips add Today and Custom, Show tasks for narrows the list to one resource, and the status date can be set to today. - On iPhone, the task sheet adds Actual start, Mark started today and Mark done today. - Type a duration as 2h, 90m, 1.5d or 2w. - Level on this device… previews each leveling move with its reason; accepting them, as one step you can undo, works with an Onplana organization whose plan includes it. - A published project's Gantt link from Onplana opens the plan in Onplana Schedule. - Compare with another version… names the tasks that moved the finish. - On iPad, the menus sit in the title bar and the views are tabs. New columns: Total Float, Deadline, Work, Notes and Outline Number, and Work, Actual work and Cost on the Resource sheet. - On iPad, Resource usage opens at the status date with a Today button and flags an over-allocated resource; tap the red mark to read why. - On iPad, hold a row or tap its … button to open the task menu, double tap a name to edit it, and Remove link takes out a selected link in the Network diagram. - On iPad, rows, pickers and the date picker's days are sized for a finger, the on-screen keyboard keeps the row you are typing in, and the status bar keeps the finish date whole.

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Version history on your Mac

See what changed since the plan you last saved

Nov 13, 2026 — Nov 22, 2026

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