# Space Center vs OPAZ

The clearest difference is update cadence: OPAZ at every 5 days against Space Center's every 3 weeks. Space Center's advantage is iOS requirement (11.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Space Center ships an update every 3 weeks, OPAZ every 5 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Space Center | OPAZ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (14 ratings)](https://appshunter.io/ios/app/space-center/id1522647828/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 41 MB | 103 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [KavNiya Technology Solutions Private Limited](https://appshunter.io/developer/1511534110) | [Public Authority for Special Economic Zones and Free Zones](https://appshunter.io/developer/1347874359) |

## What reviewers say

### Space Center

[App page](https://appshunter.io/ios/app/space-center/id1522647828)

Manage volunteer schedules for space missions with this app. Safely mark your availability and view your mission history across daily, monthly, and yearly calendars.

**Highlights:** Volunteer schedule management, Mark availability, View mission history, Daily calendar view, Monthly calendar view, Yearly calendar view

**In-app purchases:** none


### OPAZ

[App page](https://appshunter.io/ios/app/opaz-omap/id6759082874)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Space Center free?

Space Center is free to download, with no in-app purchases.

### Is OPAZ free?

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

### Do Space Center or OPAZ have ads?

Neither Space Center nor OPAZ shows ads.

### Which is updated more often, Space Center or OPAZ?

Space Center ships an update every 3 weeks, and OPAZ every 5 days. Most recently, Space Center was updated on October 24, 2026 and OPAZ on October 10, 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.*