# Cloud Map vs iCSC

The clearest difference is review sentiment: iCSC at 84% against Cloud Map's 33%. iCSC also leads on in-app purchases (none vs 1) and iOS requirement (11.0 vs 16.2). Cloud Map's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Cloud Map sells 1 one-off in-app purchase. iCSC asks for nothing beyond the download.

Cloud Map ships an update monthly, iCSC every 2 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Cloud Map | iCSC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (1.6K ratings)](https://appshunter.io/ios/app/icsc-clear-sky-chart-viewer/id877416121/reviews)** |
| Number of ratings | — | **1.6K** |
| Positive reviews | 32.6% of reviews | **84.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 19 MB |
| Requires iOS | 16.2 | **11.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [náhodný](https://appshunter.io/developer/431797361) | [Random Widgets LLC](https://appshunter.io/developer/1689907576) |

## What reviewers say

### Cloud Map

[App page](https://appshunter.io/ios/app/cloud-map/id431797358)

Access satellite imagery from over 120 NOAA weather stations to view cloud cover. Utilize GPS to locate nearby stations or save favorites for quick access. View current conditions on Apple Watch.

**Highlights:** 120+ NOAA weather station satellite images, Visible cloud cover view, GPS for nearest station, Favorite weather stations list, Apple Watch integration, Standard and Pro versions

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud Map Pro | $3.99 | one-time |


### iCSC

[App page](https://appshunter.io/ios/app/icsc-clear-sky-chart-viewer/id877416121)

This app provides detailed 48-hour sky forecasts for astronomical observation. It helps users find optimal locations and times for clear, dark skies by displaying data on cloud cover, transparency, and more. Save your favorite charts for quick access.

**Highlights:** 48-hour sky forecasts, Cloud cover, transparency, seeing data, Search by location or map, Save favorite charts, Legend for chart interpretation, North American chart coverage

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Awesome
- 🚀 Great
- 🚀 The Best
- 🚀 Great Tool
- 🚀 Works Great !

**What reviewers complain about**

- 🐛 Not supported
- 🐛 Accuracy
- 🐛 no key to charts
- 🐛 NO TOO IMPRESSED
- 🐛 Terrible.

**Reported bugs**

- Crashed on opening a favorite, even after your message says bug is fixed.
- Latest update crashes on Iphone X
- Crashes as soon as I select an observatory/location ever since the update.
- Wish they explained what each category meant in terms of overall ability to see the stars.
- The data isn't bad, but it is all but unusable on my 5th gen iPad Pro 12.9. Tiny text you can't zoom in on.

**Requested features**

- Please add widgets and iPad support
- Can update the forecast more frequent, at least once in the afrernoon
- Search function
- Good app, would love widget


## Frequently asked questions

### Is Cloud Map free?

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

### Is iCSC free?

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

### Do Cloud Map or iCSC have ads?

Neither Cloud Map nor iCSC shows ads.

### Which is updated more often, Cloud Map or iCSC?

Cloud Map ships an update monthly, and iCSC every 2 months. Most recently, Cloud Map was updated on October 11, 2026 and iCSC on October 13, 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.*