# ISS Detector vs Physics Toolkit Pro

ISS Detector and Physics Toolkit Pro both sit at 4.6 stars, but that hides the real split: 55% of ISS Detector's written reviews are positive against 0% of Physics Toolkit Pro's. ISS Detector also leads on price (Free vs $1.99) and ratings volume (633 vs 7). Physics Toolkit Pro's advantage is in-app purchases (none vs 13) and ads (none vs shown). On rating and device support there is nothing between them.

ISS Detector is free to download; Physics Toolkit Pro costs $1.99 up front. ISS Detector sells 11 in-app purchases, starting at $0.99 per month. Physics Toolkit Pro asks for nothing beyond the download.

ISS Detector holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: ISS Detector has 633 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 55% of ISS Detector's written reviews are positive against 0% of Physics Toolkit Pro's.

## The numbers

| Metric | ISS Detector | Physics Toolkit Pro |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.6 (633 ratings)](https://appshunter.io/ios/app/iss-detector/id1198597805/reviews)** | [4.4 (7 ratings)](https://appshunter.io/ios/app/physics-toolkit-pro/id1353781414/reviews) |
| Number of ratings | **633** | 7 |
| Positive reviews | **55.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 33 MB | 15 MB |
| Requires iOS | 16.0 | **11.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Derk Vrijdag](https://appshunter.io/developer/1198597804) | [Electronial](https://appshunter.io/developer/1350247180) |

## What reviewers say

### ISS Detector

[App page](https://appshunter.io/ios/app/iss-detector/id1198597805)

Easily track the International Space Station and other satellites. Receive timely alarms before passes and get weather condition checks for optimal viewing. Enhance functionality with optional in-app purchases to discover more celestial objects.

**Highlights:** ISS tracking and alerts, Weather condition checks, Alarm notifications, Track Starlink trains, Track Hubble telescope, Track amateur radio satellites

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $0.99 | per month |
| Donation | $1.99 | per month |
| Premium Access | $1.99 | per month |
| Premium Access | $2.99 | per year |
| Premium Access | $5.99 | per year |
| Donation | $5.99 | per year |
| Premium Access | $11.99 | per year |
| Starlink and Famous objects | $3.99 | one-time |
| Amateur Radio Satellites | $3.99 | one-time |
| Comets and Planets | $3.99 | one-time |
| Combo package | $5.99 | one-time |


### Physics Toolkit Pro

[App page](https://appshunter.io/ios/app/physics-toolkit-pro/id1353781414)

This app provides a comprehensive suite of physics calculators, tables, and formulas for students and professionals. It covers a wide range of physics concepts, from basic mechanics to electromagnetism and quantum physics, offering quick access to essential information.

**Highlights:** Extensive physics calculators, Comprehensive formula library, Element and periodic table data, Unit and constant reference, Supports students and professionals

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

**In-app purchases:** none


## Frequently asked questions

### Is ISS Detector free?

ISS Detector is free to download, with in-app purchases available.

### Is Physics Toolkit Pro free?

Physics Toolkit Pro costs $1.99, with no in-app purchases.

### Which has better reviews, ISS Detector or Physics Toolkit Pro?

ISS Detector is rated higher. ISS Detector averages 4.6 out of 5 from 633 ratings, while Physics Toolkit Pro averages 4.4 from 7 ratings.

### Do ISS Detector or Physics Toolkit Pro have ads?

ISS Detector shows ads; Physics Toolkit Pro does not.

---

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