# Sunlight Clock Free vs RRA(SWTIS)

The clearest difference is rating: RRA(SWTIS) at 5.0 against Sunlight Clock Free's 3.7. RRA(SWTIS) also leads on update cadence (every 4 months vs every 18 months) and review sentiment (86% vs 74%). Sunlight Clock Free's advantage is iOS requirement (8.0 vs 14.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

RRA(SWTIS) holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 10 and 5 respectively. Written reviews point the same way: 74% of Sunlight Clock Free's written reviews are positive against 86% of RRA(SWTIS)'s.

Sunlight Clock Free ships an update every 18 months, RRA(SWTIS) every 4 months. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Sunlight Clock Free | RRA(SWTIS) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (10 ratings)](https://appshunter.io/ios/app/sunlight-clock-free/id319009777/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/rraswtis/id647086467/reviews)** |
| Number of ratings | **10** | 5 |
| Positive reviews | 74.4% of reviews | **85.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 12 MB | 20 MB |
| Requires iOS | **8.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Milk LLC](https://appshunter.io/developer/568486264) | [국립전파연구원](https://appshunter.io/developer/647086470) |

## 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


### RRA(SWTIS)

[App page](https://appshunter.io/ios/app/rraswtis/id647086467)

This app provides real-time space weather data, forecasts, and alerts. It monitors solar activity and its potential effects on Earth, including impacts on aviation, satellites, and power grids.

**Highlights:** Real-time space weather monitoring, 3-day space weather forecast, Forecasting models and observation data, Space weather effects analysis, Space weather news and announcements

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sunlight Clock Free free?

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

### Is RRA(SWTIS) free?

RRA(SWTIS) is free to download, with no in-app purchases.

### Which has better reviews, Sunlight Clock Free or RRA(SWTIS)?

RRA(SWTIS) is rated higher. Sunlight Clock Free averages 3.7 out of 5 from 10 ratings, while RRA(SWTIS) averages 5.0 from 5 ratings.

### Do Sunlight Clock Free or RRA(SWTIS) have ads?

Neither Sunlight Clock Free nor RRA(SWTIS) shows ads.

### Which is updated more often, Sunlight Clock Free or RRA(SWTIS)?

Sunlight Clock Free ships an update every 18 months, and RRA(SWTIS) every 4 months. Most recently, Sunlight Clock Free was updated on October 31, 2026 and RRA(SWTIS) on November 1, 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.*