There is a particular kind of silence that happens at family dinners.
Your grandmother asks you something in Punjabi. You understand every word of it. And what comes out of your mouth is English, because the Punjabi sentence would have taken eleven seconds to assemble and the conversation had already moved on.
Linguists call this receptive bilingualism. Most of us call it being a coconut, or worse, and carry a low-grade embarrassment about it for years.
Why it happens
Understanding and producing a language are different skills that share a vocabulary.
Recognition is cheap. Hearing roti and knowing what it means requires only that the word be somewhere in your head. Production is expensive: you have to retrieve the word unprompted, inflect it, put it in the right order, and say it with a pronunciation your listener will accept — all fast enough to be conversation rather than an exercise.
A childhood spent listening to Punjabi and answering in English builds enormous recognition and almost no retrieval. So you end up with a genuinely odd profile. You can follow an argument between two aunties at speed. You cannot ask for the salt.
That profile is invisible to most language products, which assume you are starting from nothing.
Why the big apps fit badly
Open a mainstream language app and it will spend your first fortnight teaching you that paani means water.
You knew that. You have known it since you were three. What you cannot do is say "I was going to call you but I fell asleep", and no beginner course reaches that, because beginner courses are built around travel and transactions. Ordering food. Booking a hotel. Asking where the station is.
You are not going to Punjab as a tourist. You are trying to talk to your own family, about school, work, someone's health, what happened at the gurdwara. That vocabulary is domestic and emotional, and it sits in a completely different place from the tourist phrasebook.
There is a second mismatch. Most courses put the script first and treat reading as the foundation. For a heritage speaker that is backwards. You already have the spoken language; Gurmukhi is a separate project, valuable but not the thing standing between you and answering your grandmother.
What actually helps
Four things, in my experience and from the people who use the app.
Start from production, not recognition. Do not test whether you know what a word means. Test whether you can produce it, out loud, from an English prompt, without waiting. If you can understand it but cannot say it in two seconds, it is not learned yet.
Work on the phrases you actually need. Sit down and write the twenty sentences you would say most often to the people you want to talk to. They will be things like "I'll be there at six", "have you eaten", "she's much better now", "I'm on my way". That list is short, personal, and worth more than a thousand generic words.
Say things out loud. This is the part everyone skips, because speaking to your phone feels ridiculous. It is also the only thing that trains retrieval and mouth-shape at the same time. Reading silently builds recognition you already have plenty of.
Accept an accent. A lot of heritage learners stop because they sound wrong to themselves. Your family are not marking you. They are, in my experience, delighted, and the accent settles on its own once you use the language.
On losing it
There is a harder thing underneath the practical problem.
Punjabi in the diaspora is thinning generation by generation. Grandparents speak it, parents understand it and answer in English, children have a handful of food words. The language does not vanish through anybody's decision. It goes quietly, in a thousand small moments where English was faster.
Which means the reason to do this is not really self-improvement. It is that there is a finite number of conversations left with the people who speak it best, and being able to hold one in their language is worth some awkwardness now.
Where the app comes in
Punjabi Bolo is built for exactly this gap, and it is deliberately not a complete course. Your family teaches you Punjabi. The app gets you far enough into a conversation to let them.
The vocabulary is domestic: greetings, food, school, weather, health, gurdwara visits, because that is where the conversations are. Every word shows in Gurmukhi with Romanised Punjabi alongside, so the script is available if you want it and out of the way if you do not. There is a say-it-back loop that prompts in English and asks you to produce the Punjabi aloud, which is the retrieval practice that is otherwise hard to do alone. The audio stays on the phone.
It is an annual subscription. If you want to try the approach without paying for anything, the twenty-sentence exercise above costs nothing and is genuinely the highest-value thing on this page.