Principle Mirror vs insphere Alert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Principle Mirror
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.
- Open Principle files
- Mirror Principle for Mac
- Interactive UI design
- Companion app functionality
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Principle Mirror is the companion app to Principle for Mac, a tool for designing interactive interfaces. Principle Mirror can open Principle files from other apps or mirror Principle for Mac when plugged in. “I just wanted to write to you quickly just to say — this. is. amazing. while I was watching the first tutorial I got tears in my eyes! seriously.” Hugo Ahlberg Designer, IDEO "This tool is amazing, very well done." Patrick Wong Designer, Lyft
insphere Alert
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- Instant Content Sharing – Push content to your display with just a few clicks. - Real-Time Alerts – Send instant notifications directly to your display. - Remote Access – Share and manage content from anywhere, anytime. - Group Display Management – Broadcast content across multiple displays seamlessly.
Screenshots
Verdict
The clearest difference is update cadence: Principle Mirror at every 2 months against insphere Alert's every 9 months. Principle Mirror also leads on iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Principle Mirror ships an update every 2 months, insphere Alert every 9 months. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.
| Parameter | Principle Mirror | insphere Alert |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (14 ratings) — better | — |
| Positive reviews | 45.2% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Hooper | EP-Tec Solutions Pte. Ltd. |
In-app purchases
Principle Mirror
No in-app purchases
insphere Alert
No in-app purchases
Questions
Is Principle Mirror free?
Is insphere Alert free?
Do Principle Mirror or insphere Alert have ads?
Which is updated more often, Principle Mirror or insphere Alert?
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