# Projectile Motion Calc vs Global Seismic Data

The clearest difference is price: Global Seismic Data at Free against Projectile Motion Calc's $2.99. Global Seismic Data also leads on update cadence (every 8 months vs every 29 months). Projectile Motion Calc's advantage is device support (3 vs 1) and iOS requirement (13 vs 17.0). On ads and in-app purchases there is nothing between them.

Global Seismic Data is free to download; Projectile Motion Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Projectile Motion Calc ships an update every 29 months, Global Seismic Data every 8 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Projectile Motion Calc | Global Seismic Data |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/projectile-motion-calc/id1397143056/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 8 months** |
| Monetization | Paid | — |
| Size | 1 MB | 26 MB |
| Requires iOS | **13** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Global Seismic Data NZ Limited](https://appshunter.io/developer/1469156236) |

## What reviewers say

### Projectile Motion Calc

[App page](https://appshunter.io/ios/app/projectile-motion-calc/id1397143056)

This physics calculator quickly determines key projectile motion parameters like horizontal and vertical velocity, time of flight, range, and maximum height. It supports various units and offers precise calculations up to 16 decimal places.

**Highlights:** Instant calculation of projectile motion parameters, Copyable results to other apps, Includes reference formulas, Supports up to 16 decimal places, Supports various input units, Lightweight and optimized for everyday use

**Features:** macOS Compatibility

**In-app purchases:** none


### Global Seismic Data

[App page](https://appshunter.io/ios/app/global-seismic-data/id1469156237)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Projectile Motion Calc free?

Projectile Motion Calc costs $2.99, with no in-app purchases.

### Is Global Seismic Data free?

Global Seismic Data is free to download, with no in-app purchases.

### Do Projectile Motion Calc or Global Seismic Data have ads?

Neither Projectile Motion Calc nor Global Seismic Data shows ads.

### Which is updated more often, Projectile Motion Calc or Global Seismic Data?

Projectile Motion Calc ships an update every 29 months, and Global Seismic Data every 8 months. Most recently, Projectile Motion Calc was updated on October 14, 2026 and Global Seismic Data on October 11, 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.*