# HUE² vs Efemeris

The clearest difference is update cadence: HUE² at weekly against Efemeris's every 8 months. HUE² also leads on price ($0.99 vs $3.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

HUE² costs $0.99 and Efemeris $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

HUE² ships an update weekly, Efemeris every 8 months. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | HUE² | Efemeris |
| --- | --- | --- |
| Price | **$0.99** | $3.99 |
| Rating | **[4.0 (6 ratings)](https://appshunter.io/ios/app/hue/id1567355347/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 months |
| Monetization | Paid | — |
| Size | 3 MB | 130 MB |
| Requires iOS | **14.5** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Artem Trembach](https://appshunter.io/developer/1390519413) | [DTDA Games](https://appshunter.io/developer/1291540307) |

## What reviewers say

### HUE²

[App page](https://appshunter.io/ios/app/hue/id1567355347)

A calming puzzle game where players arrange colored cubes on a gradient. It offers 377 levels that start easy and become increasingly challenging, testing logic and color sense.

**Highlights:** Harmonious cube placement, Gradient-based puzzles, Locked cube guides, 377 challenging levels, Logic and color testing

**Features:** macOS Compatibility

**In-app purchases:** none


### Efemeris

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

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

**In-app purchases:** none


## Frequently asked questions

### Is HUE² free?

HUE² costs $0.99, with no in-app purchases.

### Is Efemeris free?

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

### Do HUE² or Efemeris have ads?

Neither HUE² nor Efemeris shows ads.

### Which is updated more often, HUE² or Efemeris?

HUE² ships an update weekly, and Efemeris every 8 months. Most recently, HUE² was updated on October 18, 2026 and Efemeris on October 11, 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.*