# Star Walk 2 Pro vs Engineering Calculator

The clearest difference is review sentiment: Star Walk 2 Pro at 72% against Engineering Calculator's 0%. Star Walk 2 Pro also leads on rating (4.7 vs 1.0) and update cadence (every 2 months vs every 30 months). Engineering Calculator's advantage is in-app purchases (none vs 8) and price ($1.99 vs $2.99). On ads and device support there is nothing between them.

Star Walk 2 Pro costs $2.99 and Engineering Calculator $1.99 up front. Star Walk 2 Pro sells 8 one-off in-app purchases. Engineering Calculator asks for nothing beyond the download.

Star Walk 2 Pro holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Star Walk 2 Pro has 67K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 72% of Star Walk 2 Pro's written reviews are positive against 0% of Engineering Calculator's.

Star Walk 2 Pro ships an update every 2 months, Engineering Calculator every 30 months. The most recent releases landed on September 26, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Star Walk 2 Pro | Engineering Calculator |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[4.7 (67K ratings)](https://appshunter.io/ios/app/star-walk-2-pro-sky-map-live/id892279069/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/engineering-calculator/id1297957037/reviews) |
| Number of ratings | **67K** | 1 |
| Positive reviews | **72.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 30 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#40** | — |
| Size | 357 MB | 7 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vito Technology Inc.](https://appshunter.io/developer/289641503) | [loay setrak](https://appshunter.io/developer/923932983) |

## What reviewers say

### Star Walk 2 Pro

[App page](https://appshunter.io/ios/app/star-walk-2-pro-sky-map-live/id892279069)

**Currently charting:** #40 Top Paid · Education (US App Store)

Explore the night sky with this augmented reality stargazing app. Point your device to identify thousands of stars, planets, constellations, and celestial events in real-time. Discover astronomical news and plan your observations with a comprehensive sky map.

**Highlights:** Real-time sky map, Augmented reality mode, 3D constellation models, Time machine feature, Deep sky object identification, Night mode for comfortable viewing, Visible Tonight section for events

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Constellations of Avengers | Free | one-time |
| Satellite Finder in Sky Above | $0.99 | one-time |
| Constellations 3D on Sky Map | $0.99 | one-time |
| Deep Space Objects Explorer | $0.99 | one-time |
| Explore Solar System Objects | $0.99 | one-time |
| Planets of the Solar System | $0.99 | one-time |
| Space Explorer: Kids Cartoons | $0.99 | one-time |
| Star Tracker AR: Full Version | $2.99 | one-time |

**What reviewers like**

- 🚀 Accurate sky mapping
- 🌟 Visually stunning graphics
- 🔍 Detailed information on celestial objects
- 🧑‍🎓 Educational and informative
- 🔔 Helpful notifications about sky events

**What reviewers complain about**

- 🔔 Too many notifications
- 💰 Expensive in-app purchases required for full features
- 🐛 Occasional glitches and bugs
- 🧭 Difficulty calibrating and aligning the app with the sky
- 🌍 Limited support for Southern Hemisphere users

**Reported bugs**

- App crashing on launch for some users
- Incorrect celestial object positioning in certain locations
- Notifications not working as expected

**Requested features**

- Customizable notification settings
- More detailed information on moons and satellites
- Option to disable animated constellation overlays
- Improved time/date controls for planning future sky viewing
- Support for equatorial mounts and telescopes


### Engineering Calculator

[App page](https://appshunter.io/ios/app/engineering-calculator/id1297957037)

This application provides a comprehensive suite of 59 engineering calculators across civil, electrical, and mechanical disciplines. It includes formulas and descriptions for each calculator, along with convenient copy and clear functions.

**Highlights:** 59 engineering calculators, Civil, Electrical, Mechanical categories, Formulas included for each calculator, Descriptions for each calculator, Copy and clear button functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Star Walk 2 Pro free?

Star Walk 2 Pro costs $2.99, and also offers in-app purchases.

### Is Engineering Calculator free?

Engineering Calculator costs $1.99, with no in-app purchases.

### Which has better reviews, Star Walk 2 Pro or Engineering Calculator?

Star Walk 2 Pro is rated higher. Star Walk 2 Pro averages 4.7 out of 5 from 67K ratings, while Engineering Calculator averages 1.0 from 1 ratings.

### Do Star Walk 2 Pro or Engineering Calculator have ads?

Neither Star Walk 2 Pro nor Engineering Calculator shows ads.

### Which is updated more often, Star Walk 2 Pro or Engineering Calculator?

Star Walk 2 Pro ships an update every 2 months, and Engineering Calculator every 30 months. Most recently, Star Walk 2 Pro was updated on September 26, 2026 and Engineering Calculator on September 9, 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.*