# Eclipse Countdown vs Eclipse Simulator

The clearest difference is price: Eclipse Simulator at Free against Eclipse Countdown's $1.99. Eclipse Simulator also leads on update cadence (every 4 days vs monthly). Eclipse Countdown's advantage is iOS requirement (15.1 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Eclipse Simulator is free to download; Eclipse Countdown costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Eclipse Countdown ships an update monthly, Eclipse Simulator every 4 days. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Eclipse Countdown | Eclipse Simulator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Paid | — |
| Size | 49 MB | 3.2 GB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [BESSELIAN ELEMENTS PTY LTD](https://appshunter.io/developer/1896001781) | [Fumikazu Kondo](https://appshunter.io/developer/1895556530) |

## What reviewers say

### Eclipse Countdown

[App page](https://appshunter.io/ios/app/eclipse-countdown/id6746715829)

This astronomical tool provides precise sub-second solar eclipse timings and interactive maps. It guides users through the eclipse experience with real-time calculations, audio cues, and a list of phenomena to observe.

**Highlights:** Precision timing engine, Interactive mapping, Live audio synchronization, List of phenomena to observe, Lunar limb profile corrections, 3D computational models

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

**In-app purchases:** none


### Eclipse Simulator

[App page](https://appshunter.io/ios/app/eclipse-simulator/id6806361365)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Eclipse Countdown free?

Eclipse Countdown costs $1.99, with no in-app purchases.

### Is Eclipse Simulator free?

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

### Do Eclipse Countdown or Eclipse Simulator have ads?

Neither Eclipse Countdown nor Eclipse Simulator shows ads.

### Which is updated more often, Eclipse Countdown or Eclipse Simulator?

Eclipse Countdown ships an update monthly, and Eclipse Simulator every 4 days. Most recently, Eclipse Countdown was updated on September 29, 2026 and Eclipse Simulator on October 6, 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.*