Principle Mirror vs Rooster ATS
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
Rooster ATS
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Manage your hiring process anytime, anywhere with Rooster ATS, the all-in-one Applicant Tracking System designed for modern HR teams. Track candidates, review applications and collaborate with your team seamlessly all from your mobile device.
Screenshots
Verdict
The clearest difference is update cadence: Rooster ATS at every 6 days against Principle Mirror's every 2 months. Principle Mirror's advantage is 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, Rooster ATS every 6 days. The most recent releases landed on November 1, 2026 and November 9, 2026 respectively.
| Parameter | Principle Mirror | Rooster ATS |
|---|---|---|
| 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 | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 1 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Hooper | Rooster Technology |
In-app purchases
Principle Mirror
No in-app purchases
Rooster ATS
No in-app purchases
Questions
Is Principle Mirror free?
Is Rooster ATS free?
Do Principle Mirror or Rooster ATS have ads?
Which is updated more often, Principle Mirror or Rooster ATS?
Other comparisons
