I built this to talk Danish to my girlfriend – works with any language
I'm in my 4th year living in Denmark as an expat, and I finally decided it’s time to properly learn Danish. I do have a Danish girlfriend, after all. One way I’ve been practicing is by trying to text only in Danish, but I often find myself stuck. I start my message in Danish, then hit a wall because I don’t know a word or how to fit something naturally into the sentence. Especially in those cases, I used to give up and translate the entire message from English, which kind of defeats the purpose and interrupts the learning process. So I started prompting GPT. I’d write my message with…
In plain words
Menerdu is an AI-powered tool that helps language learners compose messages in their target language. Users write text with uncertain words or phrases marked in curly braces, and the tool returns a corrected version that flows naturally. Built for learners practicing conversational writing, it removes the friction of constant dictionary lookups and translation, allowing practice to continue without interruption.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I'm in my 4th year living in Denmark as an expat, and I finally decided it’s time to properly learn Danish. I do have a Danish girlfriend, after all. One way I’ve been practicing is by trying to text only in Danish, but I often find myself stuck. I start my message in Danish, then hit a wall because I don’t know a word or how to fit something naturally into the sentence. Especially in those cases, I used to give up and translate the entire message from English, which kind of defeats the purpose and interrupts the learning process. So I started prompting GPT. I’d write my message with wildcards or notes for the parts I didn’t know, and it would return a corrected version. That worked well, but reusing the prompt each time became tedious. So I built a wrapper around it. Now I can type in the target language, mark unclear parts with curly braces {like this}, and get an instant corrected version with explanations. I also added a history feature so I can review what I got wrong, and I plan to build more on that soon (eg. summary of areas or words to review). This app is for language learners who want to practice writing without feeling insecure about mistakes or breaking their flow by switching to a translator. I hope you find it useful!
Does the same job
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Hi guys, Hope everyone is well. This app was borne out of my own frustration. I thought that I was terrible at learning languages at school, since I didn't become conversational in French after 5 years of study. However, I later traveled with some French friends and, in just under 3 weeks, I was able to hold a reasonable conversation. I realized that there's no substitute for speaking to native speakers. I tried to adopt this approach for other languages, but it's much harder to find people to practise with when you aren't travelling. I started using iTalki to meet people from different…
- IAI am relaunching the app I made to talk to my Danish girlfriendOct 2025 · menerdu.com · ▲7
It has been a while since I have shared my app, that I made to be able to practice my Danish while chatting with my grilfriend - I often used GPT to write as much as I can in Danish, and I replaced the words I didn't know with {Englis words in curly braces}. While this was great, it was rather annoying to type the prompt always, so I figured a GPT wrapper would work well here. Last time when I launched, it went viral! I was super happy (and grateful!) for all the feedback and excitement — but it also meant my tokens disappeared fast, and many people ended up trying an app that no longer…
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