# Project Planner HD vs CalcEngineer

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.

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.

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.

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.

## The numbers

| Metric | Project Planner HD | CalcEngineer |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.0 (8 ratings)](https://appshunter.io/ios/app/project-planner-hd/id383052287/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calcengineer/id6748969344/reviews)** |
| Number of ratings | **8** | 2 |
| Positive reviews | 16.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Paid | **Free** |
| Size | 13 MB | 10 MB |
| Requires iOS | **11.4** | 17 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [Peritum.Net](https://appshunter.io/developer/337479616) | [Justin Bush](https://appshunter.io/developer/1828308327) |

## What reviewers say

### Project Planner HD

[App page](https://appshunter.io/ios/app/project-planner-hd/id383052287)

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:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Simple and straightforward interface
- 📊 Functional Gantt chart creation
- 💾 Export capabilities (PDF, image formats)
- 🔄 Import/export compatibility with GanttProject
- 📱 Cross-platform synchronization via Dropbox

**What reviewers complain about**

- 🐛 Frequent crashes and instability
- ❌ Grayed out interface elements
- 🔧 Poor date/calendar functionality
- 📝 Limited editing capabilities after task creation
- 🎨 Poor graphics quality and pixelation

**Reported bugs**

- 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

**Requested features**

- Subtask support
- Microsoft Project export/import compatibility
- CSV export format
- Drag-and-drop task bar editing
- Undo and redo functionality


### CalcEngineer

[App page](https://appshunter.io/ios/app/calcengineer/id6748969344)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*