As reported by @Denny in another topic:
For just one discounted payment, you can get the ENTIRE Affinity suite (including Publisher for iPad!) on all your devices, across macOS, Windows and iPadOS.
€119,99 (40% off, time-limited discount) instead of €199,99 for Affinity Designer 2, Photo 2, and Publisher 2, on macOS, Windows, and iPadOS (entire suite).