# Principle Mirror vs Spark Break

The clearest difference is in-app purchases: Principle Mirror at none against Spark Break's 3. Principle Mirror also leads on iOS requirement (11.0 vs 16.0). Spark Break's advantage is update cadence (every 3 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Spark Break sells 3 in-app purchases, starting at $5.99 per 7 days. Principle Mirror asks for nothing beyond the download.

Principle Mirror ships an update every 2 months, Spark Break every 3 days. The most recent releases landed on September 19, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Principle Mirror | Spark Break |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (14 ratings)](https://appshunter.io/ios/app/principle-mirror/id991911319/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 45.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 1 MB | 34 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Hooper](https://appshunter.io/developer/419502228) | [Dmitry Savchenko](https://appshunter.io/developer/1814410004) |

## What reviewers say

### Principle Mirror

[App page](https://appshunter.io/ios/app/principle-mirror/id991911319)

Design interactive user interfaces with this companion app for a popular Mac design tool. Seamlessly open Principle files or mirror your Mac's design work directly to your device.

**Highlights:** Open Principle files, Mirror Principle for Mac, Interactive UI design, Companion app functionality

**Features:** Vision Pro support

**In-app purchases:** none


### Spark Break

[App page](https://appshunter.io/ios/app/spark-break/id6794669428)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spark Weekly | $5.99 | per 7 days |
| Spark Break Intro | $24.99 | per year |
| Spark Yearly | $49.99 | per year |


## Frequently asked questions

### Is Principle Mirror free?

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

### Is Spark Break free?

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

### Do Principle Mirror or Spark Break have ads?

Neither Principle Mirror nor Spark Break shows ads.

### Which is updated more often, Principle Mirror or Spark Break?

Principle Mirror ships an update every 2 months, and Spark Break every 3 days. Most recently, Principle Mirror was updated on September 19, 2026 and Spark Break on September 18, 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.*