Flinto vs Principle Mirror
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flinto
This companion app allows you to view high-fidelity prototypes created with Flinto for Mac. It supports custom animated transitions, gestures, and scrolling. Easily transfer your designs via email, Airdrop, or iCloud.
- View high-fidelity prototypes
- Custom animated transitions
- Direct manipulation gestures
- Flexible scrolling options
- Live preview from Mac
- Easy file transfer
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The App Design App This is the companion app to Flinto for Mac. Flinto allows you to create high-fidelity prototypes with custom animated transition, direct manipulation gestures and flexible scrolling options. Use this app to view prototypes you create using Flinto for Mac. You can also use this app to see a live view of your prototypes while you work on them in Flinto for Mac. To get your Flinto files into this app, just email them to yourself, send them with Airdrop, or save them into iCloud. When you view a prototype, tap with three fingers to access the menu and exit the prototype.
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
Screenshots
Verdict
The clearest difference is rating: Principle Mirror at 4.2 against Flinto's 3.3. Principle Mirror also leads on review sentiment (45% vs 36%) and iOS requirement (11.0 vs 13.0). Flinto's advantage is update cadence (every 3 weeks vs every 2 months). On price, ratings volume, ads and in-app purchases 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 holds the better App Store score, 4.2 against 3.3. Both are backed by a comparable volume of ratings — 18 and 14 respectively. Written reviews point the same way: 36% of Flinto's written reviews are positive against 45% of Principle Mirror's.
Flinto ships an update every 3 weeks, Principle Mirror every 2 months. The most recent releases landed on September 13, 2026 and September 19, 2026 respectively.
| Parameter | Flinto | Principle Mirror |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (18 ratings) | 4.2 (14 ratings) — better |
| Positive reviews | 35.7% of reviews | 45.2% of reviews — better |
| Number of ratings | 18 — better | 14 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Flinto, LLC. | Daniel Hooper |
Customer experience
Flinto
Principle Mirror
In-app purchases
Flinto
No in-app purchases
Principle Mirror
No in-app purchases
