I'm using an iPhone as well and just noticed that the android version on Imgur gives a choice of link styles. I have three different imgur apps and each will provide links WITHOUT the tags. I end up typing in the links manually (royal pain). To speed things up, I added some shortcuts on the iPhone (Settings>General>Keyboard>Text Replacement). So when I type in "[u", it gets converted to the URL start tag; "[/u" gets converted to the URL end tag. I do the same thing with the IMG tags.
Also, if it's going to be a lengthy post, I type everything in the Notes app. Easier to proofread and verify the links by clicking on them. If I'm super lazy, I use the voice-to-text. Then I copy all of it and post it in a thread.
Hope this helps.
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