# Krypton vs ZuluTime+GPS

The clearest difference is price: ZuluTime+GPS at Free against Krypton's $2.99. ZuluTime+GPS also leads on update cadence (every 3 weeks vs every 10 months). Krypton's advantage is device support (4 vs 1) and iOS requirement (14.0 vs 17.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

ZuluTime+GPS is free to download; Krypton costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Krypton against 5.0 for ZuluTime+GPS. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Krypton ships an update every 10 months, ZuluTime+GPS every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Krypton | ZuluTime+GPS |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/krypton/id1529946598/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/zulutime-plus-gps/id6758929375/reviews) |
| Number of ratings | 2 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 110 MB | 3 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Steve Lidie](https://appshunter.io/developer/1869780159) | [Addison English](https://appshunter.io/developer/1875826454) |

## What reviewers say

### Krypton

[App page](https://appshunter.io/ios/app/krypton/id1529946598)

Securely encrypt and protect your personal documents and folders with strong encryption. This app acts like a digital vault, keeping your sensitive files safe from unauthorized access on your devices and cloud storage.

**Highlights:** Strong encryption for documents and folders, Acts as a secure digital vault, Supports various file types (pictures, movies, PDFs, etc.), Cloud synchronization with iCloud Drive and Dropbox, Available on iOS and macOS

**Features:** Vision Pro support

**In-app purchases:** none


### ZuluTime+GPS

[App page](https://appshunter.io/ios/app/zulutime-plus-gps/id6758929375)

This app provides pilots and others with instant, at-a-glance access to accurate Zulu (UTC) and local time, along with live GPS coordinates including latitude, longitude, altitude, and accuracy. It features a high-contrast dark interface, customizable units, and options to keep the screen on or toggle GPS to save battery.

**Highlights:** Large, easy-to-read time display (Zulu/UTC and local), Live GPS coordinates (latitude, longitude, altitude, accuracy), CAP grid reference calculation, Customizable units (meters/feet), Continuous clock display option, Battery-saving GPS toggle

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

**In-app purchases:** none


## Frequently asked questions

### Is Krypton free?

Krypton costs $2.99, with no in-app purchases.

### Is ZuluTime+GPS free?

ZuluTime+GPS is free to download, with no in-app purchases.

### Which has better reviews, Krypton or ZuluTime+GPS?

Krypton and ZuluTime+GPS are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do Krypton or ZuluTime+GPS have ads?

Neither Krypton nor ZuluTime+GPS shows ads.

### Which is updated more often, Krypton or ZuluTime+GPS?

Krypton ships an update every 10 months, and ZuluTime+GPS every 3 weeks. Most recently, Krypton was updated on November 3, 2026 and ZuluTime+GPS on October 31, 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.*