McKinley is made by Double and Thrice Ltd.
McKinley has no accounts, no analytics, and no telemetry. Your documents stay on your Mac. Double and Thrice doesn’t run any backend servers for McKinley, so nothing you do in McKinley is ever sent to servers owned or managed by us. The app talks to outside services in two cases — checking for updates, and licensing — and both are described below.
Everything you draw lives in .mck files on your Mac. Saving, exporting to SF Symbols format, and syncing to Xcode asset catalogs are all local file operations. Nothing about your documents, or how you use the app, is uploaded anywhere.
McKinley checks for new versions using Sparkle, the standard open-source update framework for Mac apps. Sparkle is a piece of software running on your Mac rather than a service, so it has no privacy policy of its own; what matters is the server it talks to. McKinley’s update feed is hosted by Amore — the same service that handles licensing, below — so update checks are covered by Amore’s privacy policy for app data.
Update checks are optional. The second time you launch McKinley, Sparkle asks whether you’d like it to check for updates automatically, and you can change your answer at any time in Settings ▸ Updates. If automatic checking is off, McKinley contacts the update server only when you choose Check for Updates yourself. If you never check, no update-related network requests are made at all.
When a check does happen, McKinley fetches the update feed from Amore’s server. Like any web request, that reveals your IP address, and the request identifies the app and its version so the right update can be offered. Amore uses these requests to count downloads; it doesn’t use them to build a profile of you. McKinley does not enable Sparkle’s optional system profiling, so no information about your hardware or system is ever sent.
Purchases and licence activation are handled by Amore. What follows is a summary; the authoritative descriptions are Amore’s privacy policy and its page on what apps send.
The demo sends nothing. The 14-day demo is timed entirely on your Mac. McKinley makes no licensing-related network requests until you buy a licence or enter a licence key.
Buying a licence. The in-app purchase sheet is Amore’s checkout, with payment processed by Stripe. Amore stores your name, email address, licence key, and a Stripe reference number; your payment details are handled by Stripe and never seen by McKinley or Double and Thrice.
Activating. When you activate a licence, McKinley sends Amore your licence key, your Mac’s name (so you can tell your own Macs apart), a random number (which proves the server’s reply is genuine), and a device fingerprint. The fingerprint is a one-way hash derived from your Mac’s serial number — the serial number itself never leaves your Mac.
Staying activated. About once a month, McKinley re-confirms the licence with Amore, sending only the licence token and a fresh random number. If the server can’t be reached, McKinley keeps working for 30 days regardless.
Amore keeps the fingerprint, device name, activation date, and the date of the most recent check while the licence is active, and removes a device’s details when it’s deactivated or the licence is removed. Your name and email are kept for as long as the licence exists. Amore has no analytics and no tracking; it doesn’t sell data, doesn’t share it with advertisers, and doesn’t use it to train AI models.
See also the Demo & Licensing page.
The bundled icon libraries — Material Symbols, Phosphor, and Iconify — download their catalogues and icon artwork from their publishers’ servers (Google, GitHub, and Iconify respectively) when you browse or insert icons from them. These requests fetch public icon data; they carry nothing about you beyond what any web request reveals, and they only happen when you use the library. You can switch any of these sources off in Settings ▸ Icon Sources.
Icon sources installed from other apps are those developers’ software, and their network behaviour is governed by their own privacy policies.
That’s the complete list. McKinley collects no other data and sends nothing else over the network. There’s no crash reporting in McKinley itself — if the app crashes, any report goes only to Apple, under the reporting settings you’ve chosen in macOS.
If you have any questions about privacy in McKinley, email us at support@doubleandthrice.com.
Last updated: 31 August 2026.