Neutboom is a broader language learning MVP and I used the gold-standard Forvo audio database to build it. However, I found limitations: 1) sometimes it's hard to mimic the pronunciation of someone else due to different vocal styles 2) you can't count on the database to have an audio recording for an uncommon word or language.

loxai is a solution to the above. API & MVP (to visualise user end of the process) out now. Timeline: made last weekend, 8 language schools.