# Efemeris vs Save the Arctic

The clearest difference is update cadence: Save the Arctic at every 2 weeks against Efemeris's every 8 months. Save the Arctic also leads on iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Efemeris costs $3.99 and Save the Arctic $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Efemeris ships an update every 8 months, Save the Arctic every 2 weeks. The most recent releases landed on September 8, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Efemeris | Save the Arctic |
| --- | --- | --- |
| Price | $3.99 | $3.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Size | 130 MB | 49 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DTDA Games](https://appshunter.io/developer/1291540307) | [Outline Development](https://appshunter.io/developer/438669626) |

## What reviewers say

### Efemeris

[App page](https://appshunter.io/ios/app/efemeris/id1667323204)

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

**In-app purchases:** none


### Save the Arctic

[App page](https://appshunter.io/ios/app/save-the-arctic/id6745961782)

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

**In-app purchases:** none


## Frequently asked questions

### Is Efemeris free?

Efemeris costs $3.99, with no in-app purchases.

### Is Save the Arctic free?

Save the Arctic costs $3.99, with no in-app purchases.

### Do Efemeris or Save the Arctic have ads?

Neither Efemeris nor Save the Arctic shows ads.

### Which is updated more often, Efemeris or Save the Arctic?

Efemeris ships an update every 8 months, and Save the Arctic every 2 weeks. Most recently, Efemeris was updated on September 8, 2026 and Save the Arctic on August 19, 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.*