# CloudySky2 vs SunSpan

The clearest difference is iOS requirement: SunSpan at 16.0 against CloudySky2's 26.2. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. 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 CloudySky2 against 5.0 for SunSpan. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

CloudySky2 ships an update every 3 days, SunSpan every 2 days. The most recent releases landed on October 13, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | CloudySky2 | SunSpan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/cloudysky2/id6758897251/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sunspan/id6761731642/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | **Every 2 days** |
| Monetization | Free | Free |
| Size | 38 MB | 6 MB |
| Requires iOS | 26.2 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Wonder Valley Software](https://appshunter.io/developer/443064529) | [Mykhailo Chelnokov](https://appshunter.io/developer/1891136089) |

## What reviewers say

### CloudySky2

[App page](https://appshunter.io/ios/app/cloudysky2/id6758897251)

Identify and learn about different cloud types with this pocket field guide. Explore detailed information, photos, and weather map symbols to enhance your understanding and enjoyment of the sky.

**Highlights:** Cloud identification guide, Detailed cloud characteristics, Photo index of cloud types, Weather map symbol chart, Cloud formation explanations, In-app photo logging, Share photos via iMessage/email

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

**In-app purchases:** none


### SunSpan

[App page](https://appshunter.io/ios/app/sunspan/id6761731642)

Visualize an entire year of daylight, sunrise, sunset, and twilight on a single, intuitive chart. Easily inspect daily solar times and phases by tapping or dragging across the visual representation. Offers detailed insights into seasonal changes and astronomical events.

**Highlights:** Full-year daylight chart, Eight-stop twilight gradient, Inspect daily solar times, DST transitions marked, Location picker via map/GPS, Automatic time zone resolution

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

**In-app purchases:** none


## Frequently asked questions

### Is CloudySky2 free?

CloudySky2 is free to download, with no in-app purchases.

### Is SunSpan free?

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

### Which has better reviews, CloudySky2 or SunSpan?

CloudySky2 and SunSpan are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do CloudySky2 or SunSpan have ads?

Neither CloudySky2 nor SunSpan shows ads.

### Which is updated more often, CloudySky2 or SunSpan?

CloudySky2 ships an update every 3 days, and SunSpan every 2 days. Most recently, CloudySky2 was updated on October 13, 2026 and SunSpan on September 25, 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.*