Email, calendar & tasks
The hardest category to buy outright. These are the holdouts that still sell you the app instead of renting it.
| Licence type | App | Price | Licence | The catch |
|---|---|---|---|---|
 2DoGuided Ways Technologies (Fahad Gilani) | $49.99 | Paid upgrades | Updates stop eighteen months after purchase unless you pay a discounted renewal | |
 BusyCalBusyMac | $49.99 | Paid upgrades | The licence never expires but includes only 18 months of updates | |
 Calendar 366Dominik Stoisits | $49.99 | Lifetime tier | The $49.99 unlock is an in-app purchase, and separate iOS-only unlocks are sold alongside it | |
 Canary MailCartasec Pte. Ltd. (Canary Mail) | $99.99 | Lifetime tier | The lifetime price is not printed on the pricing page — only Apple's listing shows $99.99 | |
 DatoSindre Sorhus | $18 | Perpetual | None found | |
| eM ClienteM Client Inc. | €39.95 | Perpetual | VIP Support is free for the first year only, then needs a paid extension | |
 GoodTaskhaha Interactive | $39.99 | Perpetual | The iPhone and iPad app is a separate purchase from the Mac one | |
 ItsycalSanjay Madan (Mowglii) | Free | Open source | Events can be created and deleted but not edited — editing still means a trip to Calendar.app | |
 OmniFocus 4The Omni Group | $74.99 | This version | The next major version will be a paid upgrade, historically around half list price | |
 OmniPlan 4The Omni Group | $199.99 | This version | A future OmniPlan 5 is a separate paid upgrade, historically discounted for existing owners | |
 SpamSieveC-Command Software (Michael Tsai) | $39.99 | This version | Filtering only happens while your Mac is awake, so your iPhone sees unfiltered mail first | |
 TaskPaperHog Bay Software (Jesse Grosjean) | $24.99 | This version | No iPhone or iPad app — on mobile you edit the file in someone else's text editor | |
 Things 3Cultured Code | $49.99 | This version | Each platform is a separate purchase — the iPhone app is another $9.99 | |
 ThunderbirdMZLA Technologies (Mozilla) | Free | Open source | Nothing to pay, but it is a cross-platform app that never quite feels Mac-native | |
 TimematorCatforce Studio | $39 | Perpetual | The iPhone app is a separate $7.99 purchase, and the Mac licence covers two Macs |