Hi.
I'm currently using LocaleApp as a translation service for my app, but I find it rather pricey and don't find the UI very intuitive, so I might be looking for an alternative.
Do you have something you can recommend, and or how do you handle internationalization of your apps?
I can advise you one company. They are engaged in both technical translation and translation of text on sites and programs. their advantage is that they perform only human translation for a relatively small price. I advise you to visit their website www.translate.com , here you can see what languages they use, and there is a tab Pricing, where you can roughly calculate how much it will cost the work you want to order from them.
I'm the founder of LocaleData (www.localedata.com), so I might be biased :D
I don't
Depends on what tech stack you have. I'm using i18n.js with Vue.js and it's really simple to setup and use.
LocaleApp is for Ruby on Rails.
We use https://localise.biz to manage translations in 3 different languages and so far it's been very helpful
I use DeepL. But not for very long. I haven't worked with the API either, but the translations are great, I think. (This one is translated from German, with DeepL)