Everything you need to know about Protn. Can't find what you're looking for? Email us.
Getting Started
Is Protn free?
Yes — completely free. No subscription, no premium tier, no hidden fees. Download it and use every feature for free.
What's my protein goal?
A common guideline is 1.6g of protein per kg of bodyweight for people who exercise regularly. You set your own goal during onboarding and can change it anytime in Settings → Goals. We don't set it for you — your body, your target.
How do I log food?
Tap the + button on the Today tab. You have three options: describe what you ate in plain English (AI finds the protein), scan a barcode on packaged food, or enter protein grams manually. Most logs take under 5 seconds.
Food Logging
How accurate is the AI?
The AI estimates are powered by GPT-4o mini and are reasonably accurate for everyday foods. The more specific you are — including weight in grams — the better. "200g chicken breast" is more accurate than "some chicken". For exact tracking, use the barcode scanner or manual entry.
Can I edit or delete a food log?
Yes. On the Today tab, swipe left on any food entry to delete it, or swipe right to edit the protein value.
Does Protn track calories too?
Optionally. Calorie tracking is off by default. You can enable it in Settings → Goals → Calorie tracking. When on, calories are shown alongside protein in your logs.
Friends & Social
How do I add friends?
Go to the Friends tab and tap the 🔍 search icon. Search by username and tap Add. Once they accept your request, you'll both see each other's daily protein totals. You can also tap Share to send your username to a friend.
What can my friends see?
Only your daily protein total and your goal. Friends cannot see individual food entries, calorie data, or any other personal information.
How do I remove a friend?
Long press on a friend's card in the Friends tab and select Remove. They won't be notified, and you'll stop seeing each other's protein totals immediately.
Streaks
How does the streak work?
You earn a streak day by hitting your daily protein goal before midnight in your local time. Your streak resets to zero if you miss a day. You can view your full history and calendar on the History tab.
My streak reset but I hit my goal — what happened?
Streaks are calculated based on your device's local timezone. If you logged food close to midnight or changed timezones, the day boundary may have shifted. Email us at hello@protnapp.com and we can look into it.
Account
How do I change my protein goal?
Go to Settings → Goals → Daily protein goal. Tap it, type the new value, and press done. Changes apply immediately.
How do I delete my account?
Go to Settings → Account → Delete account. This permanently removes all your data — food logs, streaks, friendships, and your profile — within 30 days. This action cannot be undone.
I forgot my password — how do I reset it?
On the login screen, tap "Forgot password" and enter your email. You'll receive a reset link within a few minutes. Check your spam folder if it doesn't arrive.