Heartbeat Mailbox is made and published by Techin Park. AppBrain is an independent app data site and isn't affiliated with Techin Park. The app name, icon, screenshots and description belong to Techin Park and are shown as published on Google Play.
AppBrain's verdict
NewNiche- Total installs
- 150
- Last updated
- October 15, 2026
Heartbeat Mailbox came out 32 days ago. It is a niche app, with 150 installs. It doesn't have enough ratings yet to judge what users think.
Installs
Tracked by AppBrain- Last 30 days
- 150
- Play install range
- 100+
- Launched
- October 2026
Installs over time
Heartbeat Mailbox has been installed 150 times. Over the past 30 days, it has been installed 150 times.
Rankings
Google Play top chartsGoogle Play Rankings for Heartbeat Mailbox
Competitors
Similar apps and more from Techin ParkAlternatives to Heartbeat Mailbox
More from Techin Park
Releases
Updates seen on Google Play- Version
- 1.0.18
- Launched
- October 2026
User feedback
Ratings and reviews on Google PlayComments on Heartbeat Mailbox for Android
We don't have enough comments to show example comments. Please check back later.
Technology
Found in the app by AppBrain- Ads
- Contains ads
- Price
- Free
- Libraries
- ?
- App size
- 27.2 MB
- Content rating
- Medium
Technologies used by Heartbeat Mailbox
About the app and developer
About Heartbeat Mailbox
Heartbeat Mailbox is a social app developed by Techin Park.
How many times has Heartbeat Mailbox been downloaded?
Heartbeat Mailbox has been downloaded 150 times. In the last 30 days, the app was downloaded 150 times.
What is the rating of Heartbeat Mailbox?
Heartbeat Mailbox has no ratings yet.
Is Heartbeat Mailbox free?
Heartbeat Mailbox is free. The APK size is 27.16 MB. The latest APK version available is 1.0.18. The last update was on October 15, 2026.
What are the requirements for Heartbeat Mailbox?
The app has a content rating of Medium Maturity. The APK has been available on Google Play since October 2026.
App Performance Report
Get a detailed PDF report for Heartbeat Mailbox with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for Techin Park
Store listing
By Techin Park, from Google Play“Anonymous letters arrive at random. Reply within 24 hours or they vanish.”
Description by Techin Park Written by the developer, not by AppBrain. Click to read.
💌 Your mailbox bounces when a letter arrives
Open the envelope and read a stranger's day. You never know who sent it.
⏳ Reply within 24 hours, or it disappears
If a letter touches your heart, send a reply. It goes straight back to the writer.
✏️ Send your own letter
Pick a cute letter paper and send a warm note to someone out there. We'll let you know when someone replies.
🌙 Take a break anytime
Pause receiving letters for today, 3 days, 7 days, or until you turn it back on.
🎟️ Stamps
One letter needs one stamp. Free stamps refill every day, and you can get more by watching an ad or buying a stamp pack. Subscribe to Premium for unlimited stamps.
🔐 A safe mailbox
• Insults, sexual content, phone numbers, links and messenger IDs can't be sent
• Report and block upsetting letters instantly — our team reviews reports within 24 hours
• No sign-up needed. Log in with Apple or Google if you want to keep your letters
Available in 17 languages. You exchange letters with people who speak your language.
Recent changes:
• Letters now need at least 10 characters so your words reach people better. The writing screen lets you know if it's too short