# Sunlight Clock Free vs ARMAS

The clearest difference is rating: ARMAS at 4.3 against Sunlight Clock Free's 3.7. ARMAS also leads on update cadence (every 2 months vs every 18 months) and review sentiment (100% vs 74%). Sunlight Clock Free's advantage is in-app purchases (none vs 3) and iOS requirement (8.0 vs 14.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. ARMAS sells 3 in-app purchases, starting at $2.99 per year. Sunlight Clock Free asks for nothing beyond the download.

ARMAS holds the better App Store score, 4.3 against 3.7. Both are backed by a comparable volume of ratings — 10 and 6 respectively. Written reviews point the same way: 74% of Sunlight Clock Free's written reviews are positive against 100% of ARMAS's.

Sunlight Clock Free ships an update every 18 months, ARMAS every 2 months. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Sunlight Clock Free | ARMAS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (10 ratings)](https://appshunter.io/ios/app/sunlight-clock-free/id319009777/reviews) | **[4.3 (6 ratings)](https://appshunter.io/ios/app/armas/id1446097782/reviews)** |
| Number of ratings | **10** | 6 |
| Positive reviews | 74.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 38 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Milk LLC](https://appshunter.io/developer/568486264) | [Space Environment Technologies, LLC.](https://appshunter.io/developer/1446097781) |

## What reviewers say

### Sunlight Clock Free

[App page](https://appshunter.io/ios/app/sunlight-clock-free/id319009777)

Visualize the current sunlight and darkness across the globe with interactive map projections. Track the sun's position or your own location automatically, or manually explore the map.

**Highlights:** Real-time sunlight visualization, Multiple map projections, Automatic sun/location tracking, Manual map scrolling, Interactive globe view

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

**In-app purchases:** none


### ARMAS

[App page](https://appshunter.io/ios/app/armas/id1446097782)

Real-time radiation monitoring for aviation and space weather awareness. Pairs with hardware detectors or provides data from global systems for pilots and travelers.

**Highlights:** Real-time radiation monitoring, Space weather awareness, Pairs with ARMAS Flight Modules, Detects various radiation types, Global airspace coverage, Data from ground and space systems

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premier | $2.99 | per year |
| Professional | $2.99 | per year |
| Member | $2.99 | one-time |


## Frequently asked questions

### Is Sunlight Clock Free free?

Sunlight Clock Free is free to download, with no in-app purchases.

### Is ARMAS free?

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

### Which has better reviews, Sunlight Clock Free or ARMAS?

ARMAS is rated higher. Sunlight Clock Free averages 3.7 out of 5 from 10 ratings, while ARMAS averages 4.3 from 6 ratings.

### Do Sunlight Clock Free or ARMAS have ads?

Neither Sunlight Clock Free nor ARMAS shows ads.

### Which is updated more often, Sunlight Clock Free or ARMAS?

Sunlight Clock Free ships an update every 18 months, and ARMAS every 2 months. Most recently, Sunlight Clock Free was updated on October 31, 2026 and ARMAS on November 2, 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.*