Comparison

Project Planner HD vs CalcEngineer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Project Planner HD

Manage multiple projects and tasks with a visual Gantt chart. Organize tasks into phases, set milestones, and track progress. Supports resource and cost management, with various export options for sharing and backup.

Highlights
  • Manage multiple projects
  • Gantt chart view
  • Task dependencies
  • Resource and cost management
  • Project export/import
  • PDF report export
Features
Read full description

Project Planner 2 HD is the iPad version of Project Planner 2. Project Planner 2 HD is a project and task planning application that makes it easy to keep track of multiple projects and tasks. Project Planner 2 HD allows you manage multiple projects. In every project you can add many tasks grouped in phases and finished by milestone. You can view your project on Gantt chart in portrait and landscape view in days, weeks or months scale. Major features: - managing multiple projects - viewing your tasks as a list or Gantt Chart - viewing multiple projects on Gantt Chart - editing task directly from Gantt Chart - creating dependencies between tasks - creating and managing resources in tasks - updating progress of task to keep track - adding resources and costs to tasks - exporting and importing projects in .ppf format (supported by Project Planner 2, Project Planner 2 HD and Project Planner for OSX - available in Mac App Store) - exporting and importing project in .gan format (supported by Gantt Project available on OSX, Windows and Linux) (importing with some limitations: Project Planner imports all dependencies as 'hard' and 'end-to-start') - exporting report in PDF format (readable in Adobe Reader, OSX Preview and all full pdf compatible readers) - report and chart printing directly from app using AirPrint - exporting chart as image in PNG format - exporting are available by mail, to iTunes and to Dropbox - importing are available from iTunes, from mail and from Dropbox - copying projects - define their own calendars for projects

About

CalcEngineer

This app provides professional engineering calculations for compressed air systems. It helps engineers and technicians determine CFM requirements, size compressors and tanks, and analyze pressure drops for optimized pneumatic systems.

Highlights
  • CFM Calculator
  • Compressor & Tank Sizing
  • Pressure Drop Analysis
  • Flow Velocity & Pipe Sizing
  • Multiple CFM Entries
  • General Engineering Calculator Suite
Features
Read full description

CalcEngineer - Professional Engineering Calculators The ultimate compressed air system calculator for engineers, technicians, and professionals. Calculate CFM requirements, size compressors and tanks, analyze pressure drops, and optimize your pneumatic systems with engineering-grade precision. KEY FEATURES: • CFM Calculator - Air actuator airflow calculations with real-time results • Compressor Sizing - Size compressors for your specific air demands • Tank Sizing - Calculate air receiver tank requirements and capacity • Pressure Drop Analysis - Determine pressure loss in pipes and fittings • Flow Velocity Calculator - Calculate fluid velocity for optimal system design • Pipe Sizing - Optimize pipe diameter selection for efficiency • Multiple CFM Entries - Add multiple air demands for complex systems • Engineering Calculator Suite - Additional tools for mechanical, electrical, chemical, and thermal engineering PROFESSIONAL TOOLS: • Real-time calculations using industry-standard formulas • Pre-filled values that transfer between calculators • Imperial and metric unit support with automatic conversion • Engineering-grade accuracy for professional applications • Clean, intuitive interface designed for daily use PERFECT FOR: • Industrial engineers and maintenance teams • System designers and consultants • Engineering students and educators • Manufacturing and facility managers • HVAC professionals and technicians Built by Justin Bush | JB CRE8IV - Professional engineering calculation solutions.

Screenshots

CalcEngineer4 screens

Verdict

The call

The clearest difference is review sentiment: CalcEngineer at 100% against Project Planner HD's 16%. CalcEngineer also leads on price (Free vs $5.99) and rating (5.0 vs 4.0). Project Planner HD's advantage is ratings volume (8 vs 2) and iOS requirement (11.4 vs 17). On 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

CostPrice · In-app purchases · Ads · Monetization

CalcEngineer is free to download; Project Planner HD costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

CalcEngineer holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 16% of Project Planner HD's written reviews are positive against 100% of CalcEngineer's.

UpkeepUpdate frequency

Project Planner HD ships an update every 2 months, CalcEngineer every 2 days. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

Scorecard7 real differences · 3 level
Project Planner HD versus CalcEngineer: the parameters behind the verdict, then further details
ParameterProject Planner HDCalcEngineer
Price$5.99Free — better
Rating4.0 (8 ratings)5.0 (2 ratings) — better
Positive reviews16.3% of reviews100.0% of reviews — better
Number of ratings8 — better2
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPadiPhone, iPad — better
Requires iOS11.4 — better17
Further details — not scored
Size13 MB10 MB
Age rating4+9+
DeveloperPeritum.NetJustin Bush

Customer experience

Project Planner HD

All ratings8 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews129 reviews
Positive16.3%
Neutral12.4%
Negative71.3%

CalcEngineer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Project Planner HD

Reported bugs

28 issues
  • App crashes when adding tasks
  • App crashes when deleting tasks
  • App crashes when moving tasks
  • Grayed out interface elements preventing use
  • Calendar not accepting date input
Show 23 more
  • Calendar defaulting to incorrect dates (April 2013)
  • Tasks jumping to random positions
  • Task links breaking after reordering
  • Project titles overlapping
  • Duration calculations producing wrong end dates
  • Keyboard not appearing for input
  • Screen navigation buttons not responding
  • App crashes on opening Gantt charts
  • Font overlay issues in allocation area
  • Tasks disappearing when moved off-screen
  • Negative duration values (-1 day default)
  • Tasks not carrying over to next day with multi-day durations
  • PDF export cutting off notes and text
  • Grid going blank after 60 days
  • Unable to change dates after task saved
  • App unresponsive and sluggish
  • Data loss in project fields
  • Crashes when editing preferences/roles
  • Allocation field not accepting data entry
  • Cannot edit resource allocations
  • Crashes after OS upgrades
  • Help button non-functional
  • Dropbox login required to exit app

Requested features

23 requests
  • Subtask support
  • Microsoft Project export/import compatibility
  • CSV export format
  • Drag-and-drop task bar editing
  • Undo and redo functionality
Show 18 more
  • Critical path analysis
  • Resource allocation and management
  • Cost budgeting features
  • Zoom functionality
  • End date input instead of duration only
  • Task color customization
  • Start/finish summary display
  • Month-based export options
  • Text color and size formatting control
  • Help documentation and tutorials
  • Ability to edit task order after creation
  • Backward scheduling (end date to start date)
  • Task grouping and indentation
  • Calendar customization (work hours, days)
  • 12-hour clock format option
  • Integration with device calendar
  • Online help and support resources
  • Sample projects for learning

CalcEngineer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Project Planner HD

No in-app purchases

None

CalcEngineer

No in-app purchases

Questions

Is Project Planner HD free?
Project Planner HD costs $5.99, with no in-app purchases.
Is CalcEngineer free?
CalcEngineer is free to download, with no in-app purchases.
Which has better reviews, Project Planner HD or CalcEngineer?
CalcEngineer is rated higher. Project Planner HD averages 4.0 out of 5 from 8 ratings, while CalcEngineer averages 5.0 from 2 ratings.
Do Project Planner HD or CalcEngineer have ads?
Neither Project Planner HD nor CalcEngineer shows ads.
Which is updated more often, Project Planner HD or CalcEngineer?
Project Planner HD ships an update every 2 months, and CalcEngineer every 2 days. Most recently, Project Planner HD was updated on October 7, 2026 and CalcEngineer on October 1, 2026.

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