# Magna Calc vs Star Archive

The clearest difference is price: Star Archive at Free against Magna Calc's $0.99. Star Archive also leads on update cadence (every 2 days vs every 37 months) and iOS requirement (16.4 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Star Archive is free to download; Magna Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Magna Calc ships an update every 37 months, Star Archive every 2 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Magna Calc | Star Archive |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/magna-calc/id412428391/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 2 days** |
| Monetization | Paid | — |
| Size | 1 MB | 284 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Greg Paskal](https://appshunter.io/developer/322758381) | [Kyungil Myung](https://appshunter.io/developer/6784481684) |

## What reviewers say

### Magna Calc

[App page](https://appshunter.io/ios/app/magna-calc/id412428391)

Calculate telescope magnification easily. Supports various eyepiece focal lengths and Barlow lens options from 1x to 5x. Essential tool for amateur and professional astronomers.

**Highlights:** Telescope focal length input, Eyepiece focal length input, Barlow lens option (1x-5x), Magnification calculation, Supports millimeters

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

**In-app purchases:** none


### Star Archive

[App page](https://appshunter.io/ios/app/star-archive/id6784481682)

**In-app purchases:** none


## Frequently asked questions

### Is Magna Calc free?

Magna Calc costs $0.99, with no in-app purchases.

### Is Star Archive free?

Star Archive is free to download, with no in-app purchases.

### Do Magna Calc or Star Archive have ads?

Neither Magna Calc nor Star Archive shows ads.

### Which is updated more often, Magna Calc or Star Archive?

Magna Calc ships an update every 37 months, and Star Archive every 2 days. Most recently, Magna Calc was updated on November 1, 2026 and Star Archive on November 5, 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.*