When comparing Anka/Coder vs Iosevka, the Slant community recommends Iosevka for most people. In the question“What are the best programming fonts?” Iosevka is ranked 6th while Anka/Coder is ranked 20th. The most important reason people chose Iosevka is:
Iosevka is very clear and legible on all displays and in all sizes.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Zero distinguishable thanks to protruding slash
The zero really stands out and looks quite different from zeroes in most other fonts. The addition of the slash means you'll never have to second guess if that character is actually an "O" or if it is a "0".
Pro Open source
Because it's open source, Anka/Coder is freely available to anyone.
Pro Practical yet stylish
Anka/Coder has just the right balance between style and readability.
Pro Compact
Condensed and, even to a greater extent, narrow versions allow for compact lines without sacrificing readability.
Pro Readable
Iosevka is very clear and legible on all displays and in all sizes.
Pro Narrow
Narrow character width uses horizontal screen space more efficiently.
Pro Large number of weights
This font comes in seven different weights, ranging from thin and extra-light to heavy.
Pro Great customizability
There is full customization of styles and variants in Iosevka.
Pro Support for Cyrillic and Greek letters
Iosevka is quite flexible in that it supports Cyrillic and Greek letters.
Pro Free and open source
Iosevka is free and open source.
Pro Powerline support
Includes characters for supporting Powerline/Airline for terminals and terminal editors.
Pro Ligature characters look great
Few fonts have a good ligation feature. Ligature characters (such as æ or the German ß) are supported in Iosevka and look just as you'd expect them to.
Pro IPA Support
IPA is a system containing the sounds of spoken language and includes speech qualities such as intonation.
Pro Several styles available
Many of the common styles are available, including Sans Serif and Slab Serif with normal, bold, italic, and bold italic styles.
Pro Easy on user's eyes
Due to it being readable on all types of displays, Iosevka isn't hard on the user's eyes.
Pro Well-maintained
The developer is active and responds to user questions and issues.
Pro Good CJK compatibility
Iosevka integrates CJK characters well, those being characters of the Chinese, Japanese, Korean, and occasionally Vietnamese languages.
Pro Also variant with tiny serifs available ("Slab")
For better reading longer texts.
Cons
Con Some characters aren't distinguishable from others
This is especially the case with the colon, which is barely distinguishable from the semi-colon.
Con Not quite as charming at sizes of 10 and 11 pt
There are some hinting issues at these sizes: upper curves are bent sharper while the lower look is squashed to the baseline. Also, the dot of "i" appears merged with the stick at 11 pts. At 9 pts, the font looks good again (nice for watches, compiler output, etc).
Con Too narrow
Con Must do a custom build to get all ligatures
Con Fewer ligatures than other fonts
Iosevka has a nice ligation set, but it doesn't have as many ligatures as fonts like Hasklig, Monoid, or Pragmata Pro.