# Sunset Challenge vs Nightfall Atlas

The clearest difference is update cadence: Nightfall Atlas at every 3 days against Sunset Challenge's every 10 days. Nightfall Atlas also leads on ratings volume (3 vs 1). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for Sunset Challenge against 5.0 for Nightfall Atlas. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Sunset Challenge ships an update every 10 days, Nightfall Atlas every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Sunset Challenge | Nightfall Atlas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sunset-challenge/id6758141249/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/nightfall-atlas/id6787785856/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | Free | Free |
| Size | 45 MB | 35 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Ludovic NGUIE](https://appshunter.io/developer/1871132296) | [Builder of Things Studio LLC](https://appshunter.io/developer/6787785858) |

## What reviewers say

### Sunset Challenge

[App page](https://appshunter.io/ios/app/sunset-challenge/id6758141249)

Share your best sunset photos and explore a global gallery of stunning skies. Engage with a community by liking photos and participating in weekly rankings. Experience a simple, immersive interface focused on beautiful moments.

**Highlights:** Share sunset photos, Explore global sunset gallery, Like and rank photos, Automatic location tagging, Minimalist interface, Community engagement

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

**In-app purchases:** none


### Nightfall Atlas

[App page](https://appshunter.io/ios/app/nightfall-atlas/id6787785856)

This app assists astrophotographers in planning observing sessions by considering location, gear, sky conditions, Moon phase, and potential field risks. It helps users decide what to image, when to start, and whether a night is suitable for photography.

**Highlights:** Tonight and week-ahead planning, Target visibility and imaging window recommendations, Weather, Moon, darkness, and field-risk signals, Saved target and plan reminders, Native widgets and observing alerts, Plan sharing and image export, Equipment-aware planning

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

**In-app purchases:** none


## Frequently asked questions

### Is Sunset Challenge free?

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

### Is Nightfall Atlas free?

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

### Which has better reviews, Sunset Challenge or Nightfall Atlas?

Sunset Challenge and Nightfall Atlas are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Sunset Challenge or Nightfall Atlas have ads?

Neither Sunset Challenge nor Nightfall Atlas shows ads.

### Which is updated more often, Sunset Challenge or Nightfall Atlas?

Sunset Challenge ships an update every 10 days, and Nightfall Atlas every 3 days. Most recently, Sunset Challenge was updated on October 25, 2026 and Nightfall Atlas on October 28, 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.*