# SurfaceONE vs Caldera

The clearest difference is review sentiment: Caldera at 100% against SurfaceONE's 29%. Caldera also leads on rating (5.0 vs 3.0). SurfaceONE's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Caldera sells 3 in-app purchases, starting at $5.99 per month. SurfaceONE asks for nothing beyond the download.

Caldera holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: SurfaceONE has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 29% of SurfaceONE's written reviews are positive against 100% of Caldera's.

SurfaceONE ships an update monthly, Caldera every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SurfaceONE | Caldera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/surfaceone/id1290212322/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caldera-astrology-and-horoscope/id6763941431/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 28.6% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 41 MB | 30 MB |
| Requires iOS | **10.2** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [edelkrone](https://appshunter.io/developer/1436054527) | [CEREN DASTANOGLU](https://appshunter.io/developer/1888999468) |

## What reviewers say

### SurfaceONE

[App page](https://appshunter.io/ios/app/surfaceone/id1290212322)

This application allows users to remotely control the edelkrone SurfaceONE device. It enables programming of targeted slides, linear slides, and smooth panning movements for enhanced creative control.

**Highlights:** Remote control for SurfaceONE, Program targeted slides, Program linear slides, Smooth pan control, Device integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Caldera

[App page](https://appshunter.io/ios/app/caldera-astrology-and-horoscope/id6763941431)

This app offers daily esoteric guidance based on celestial events and alchemical traditions. It provides contemplative practices, daily readings, and a sacred calendar to aid in personal inner work and spiritual development.

**Highlights:** Daily alchemical teachings, Celestial current readings, Living sky data, Sacred calendar, Interactive birth chart, Contemplative practices

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $5.99 | per month |
| Plus Yearly | $59.99 | per year |
| Expert Birth Chart Reading | $49.99 | one-time |


## Frequently asked questions

### Is SurfaceONE free?

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

### Is Caldera free?

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

### Which has better reviews, SurfaceONE or Caldera?

Caldera is rated higher. SurfaceONE averages 3.0 out of 5 from 5 ratings, while Caldera averages 5.0 from 1 ratings.

### Do SurfaceONE or Caldera have ads?

Caldera shows ads; SurfaceONE does not.

### Which is updated more often, SurfaceONE or Caldera?

SurfaceONE ships an update monthly, and Caldera every 3 weeks. Most recently, SurfaceONE was updated on November 3, 2026 and Caldera on November 5, 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.*