Buy once instead of Ulysses
7 apps in the directory cover what people use Ulysses for. 6 of them are a one-time purchases, and one costs nothing at all.
Ulysses costs about $40 a year. At that rate Typora, the cheapest dollar-priced replacement at $14.99, pays for itself in 4 months.
Read the catch on each one before you switch — a one-time price is not automatically the better deal, and we say so where it is not.
The replacements
Zettlr
markdown writing app built around citations and Pandoc
Free Open source
Export beyond HTML needs Pandoc, and PDF needs a LaTeX install on top
Typora
live-preview markdown editing for $14.99, three activations
$14.99 This version
A major version jump like 1.x to 2.x can require paying again
iA Writer
markdown editor sold once per platform, no subscription offered
$49.99 This version
Each platform is a separate purchase, and major versions may cost extra
MarsEdit 5
desktop blog editor for WordPress, Ghost and Micro.blog
$59.95 Paid upgrades
Major versions are a separate paid upgrade, at about half price for existing owners
BBEdit
the 1992 Mac text editor that still sells perpetual licences
$59.99 Paid upgrades
Major versions are paid upgrades, currently $29.99 to $39.99 every couple of years
Scrivener 3
the long-form writing workhorse, still a perpetual licence
$59.99 This version
Scrivener 4 will be a new purchase, at a discount for owners of 3
Marked 3
markdown preview and export with a permanent unlock option
$69.99 Lifetime tier
The $69.99 permanent unlock is introductory pricing and returns to $89.99 later