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Android Apps > Lifestyle > Sandboxx
Sandboxx icon

Sandboxx

24.1.0
Sandboxx, Inc.
3.95
20,445 reviews
1,000,000+
Downloads
Free

Send Letters Overnight to Your Recruit

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Screenshots by Sandboxx, Inc., from the Google Play listing
View on Google Play

AppBrain's verdict

EstablishedPopular
Rating on Google Play
3.95
20,445 ratings
Installs
1.4 million
Last updated
October 30, 2026
Ads
No ads
Size
47.9 MB

Sandboxx is popular, with 1.4 million installs. Users are divided: 3.9 stars from 20,445 ratings.

Official page on Google Play

User feedback

Ratings and reviews on Google Play

Comments on Sandboxx for Android

★★★★☆ Dainja Gal · Aug 26, 2026
Very good and easy to use. Little too pricey for a letter. Would be cheaper to JS write one and mail it off.
★★★★★ Adelaide Crescioni · Jul 22, 2026
I'm away from the mail station to send letters. My granddaughter needs Grandma's messages to give her good vibes and energy, besides my love. Sandbox delivers my letters in a snap. Love the app, thanks to the technology and the makers of this fabulous app!!!
★★★★★ Kassie Rivera (ᴍᴏsᴛ ʜᴀᴛᴇᴅ) · Aug 27, 2026
Love Sandbox, it keeps me updated with everything my son is going through at Bootcamp and im able to track all my letters I send to him
★★★★★ Sheila F · Sep 3, 2026
As a Mom, Sandbox was a great source of information to navigate the emotional waters of Basic Military training (BMT). It was a comfort to know my letters were being expedited to my son. Thank you for your service Sandbox.
★★☆☆☆ Amanda Pigott · Jul 25, 2026
I decided to use Sandbox because of its quickness to get to my recruit... however, my recruit has not received any over the last 3 weeks, even though it says they were delivered. I was prepared because most of the people in my recruits' company were complaining about returned Sandbox letters. So today... I got the first letter I sent back in the mail saying it was undeliverable. $60 is alot to pay when it's not even making it to them. Snail mail is much cheaper and seems to make it there.
★☆☆☆☆ Greg Klein · Aug 9, 2026
Big money grab app! Huge money to send your kid a letter. Then to share the overpriced letters with your family to use, you need to create a "Support Squad." Then there are no directions on how your family can even use those overpriced letters. Google AI said they need to become "admin" users. So, $200 adds up real quick figuring all this out. Then, when sending letters, it asks my family for more money for every little thing. My family is pissed off over this app and disappointed with me.
★☆☆☆☆ Vicky Hopper · Sep 15, 2026
It is freaking expensive to send a letter through this app. And there is no guarantee your soldier will actually receive it. Used it to send letters during basic training and our soldier only received a couple. Not worth the money they charge you to use the service.

Google Play Rating history and histogram

13K
1.2K
810
1.1K
3.9K

Store listing

By Sandboxx, Inc., from Google Play
Description by Sandboxx, Inc. Written by the developer, not by AppBrain. Click to read.
Developed by veterans with decades of service, our mission is to support service members and their supporters throughout their military journey.

Sending letters to basic training and beyond has never been easier. With over 8 million letters sent to date, we have revolutionized the way you think of supporting your service member. A fully digital letter writing experience, overnight shipping, tracking and the option to add gift cards makes Sandboxx the ultimate supporter tool.

With a growing community of over 2 million Sandboxx users, we are continuing to build more products to help. Get access to base specific training updates from within the app as your recruit progresses through basic training. Refer friends and family to earn free Letters and ensure your service member can receive even more mail.

Check out Sandboxx News to stay up to date with all that's going on in the military space. Grab some additional stamps, newsletters or motivation to mail your recruit in the Sandboxx Shop.

With Sandboxx, we've got you covered for all your basic training needs.

SEND LETTERS TO BASIC TRAINING AND BEYOND
The easiest way to send letters to basic training or overseas. Send a letter, anytime, anywhere. We physically print your mail, include return stationery, provide tracking and overnight it to your recruit at any recruiting base.

GET WEEKLY TRAINING UPDATES
Stay up to date on your recruit as they progress through basic training. Learn about what they are going through on a weekly basis, all accessible within the Sandboxx app.

LEARN MORE WITH SANDBOXX NEWS
Your essential source of news from within the military space, Sandboxx News brings you a wealth of information to stay up to date on the ever evolving world of military life. Covering news to lifestyle to military affairs, the Sandboxx Editorial team brings decades of real life experience and education straight to your phone.

GET EXCLUSIVE SANDBOXX PRODUCTS
Whether you want to purchase military apparel for yourself or set up a daily mail send for your recruit, the Sandboxx Shop stocks a wide variety of recruit and supporter centric products that are sure to delight your recruit's entire support system.

• OPSEC and PERSEC compliant
• Automatically connect with your service member to easily send letters
• Write your letter, add photos and gift card and send within minutes
• Track your letter from Sandboxx HQ to the base mailroom
• Access to customer support fully staffed by veterans and military spouses

No Federal or DoD Endorsement Implied.

Recent changes:
We update Sandboxx frequently to support you throughout your military journey. This release includes:

- General bug fixes and maintenance

Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.

Safety and technology

Found in the app by AppBrain
Ads
No ads
Price
Free
Libraries
56
App size
47.9 MB
Needs Android
8.0+
Content rating
Everyone

Technologies used by Sandboxx

26 permissions · 56 libraries
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Version
24.1.0
Launched
June 2015
  • Oct 30, 2026UpdateVersion 24.1.0
  • Oct 1, 2026UpdateVersion 24.0.1
  • Sep 11, 2026UpdateVersion 20.43.2
  • Sep 2, 2026UpdateVersion 20.43.1
  • Jul 31, 2026UpdateVersion 20.41.2
Show all changes Show fewer

Alternatives

Similar apps and more from Sandboxx, Inc.

Alternatives to Sandboxx

USAF Delayed Entry Program icon USAF Delayed Entry Program
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UK Postbox icon UK Postbox
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My Exchange icon My Exchange
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GMX - Mail & Cloud icon GMX - Mail & Cloud
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Surprising Gift Service icon Surprising Gift Service
artrayd
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Swiss Post icon Swiss Post
Die Schweizerische Post AG
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Package Tracker icon Package Tracker
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More from Sandboxx, Inc.

iCorps - Pocket Reference icon iCorps - Pocket Reference
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Sandboxx Community icon Sandboxx Community
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Sandboxx News icon Sandboxx News
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Waypoints - The Military App icon Waypoints - The Military App
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Installs

Tracked by AppBrain
Last 30 days
17 thousand
Per day
560
30-day average
Play install range
1+ million
Launched
June 2015

Installs over time

Sandboxx has been installed 1.4 million times. Over the past 30 days, it averaged 560 installs per day.

Rankings

Google Play top charts
Highest rank
#121
Chart
Top Free
Lifestyle
Country
United States

Google Play Rankings for Sandboxx

Top rankings

Rank Country Category List
121 United States Lifestyle Top Free
Show all market rankings

Ranking history in United States

About the app and developer

About Sandboxx

Sandboxx is a lifestyle app developed by Sandboxx, Inc.

Install Statistics

Sandboxx has been installed 1.4 million times. In the last 30 days, the app was installed 17 thousand times.

User Ratings

Sandboxx is rated 3.95 out of 5 stars. The rating is based on 20 thousand ratings.

App Information

Sandboxx is freely available from Google Play. The app size is 47.87 MB. The latest version available is 24.1.0. The last update was on October 30, 2026.

Technical Requirements

Sandboxx requires Android 8.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since June 2015.

Sandboxx is made and published by Sandboxx, Inc. AppBrain is an independent app data site and isn't affiliated with Sandboxx, Inc. The app name, icon, screenshots and description belong to Sandboxx, Inc. and are shown as published on Google Play.

App Performance Report

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Developer information for Sandboxx, Inc.

Sandboxx, Inc.

happiness@sandboxx.us

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Frequently asked questions about Sandboxx

Is Sandboxx free?

Yes. Sandboxx is free on Google Play.

Is Sandboxx still available?

Yes. Sandboxx is on Google Play, and the last update we saw was on October 30, 2026.

Does Sandboxx contain ads?

No. Google Play does not list Sandboxx as containing ads.

What Android version does Sandboxx require?

Sandboxx runs on Android 8.0 and higher.

How large is Sandboxx?

Sandboxx is 47.87 MB.

Is Sandboxx suitable for children?

Google Play rates the content of Sandboxx as suitable for everyone.

How many times has Sandboxx been installed?

Google Play lists 1,000,000+ installs for Sandboxx.

How do people rate Sandboxx?

Sandboxx scores 3.95 out of 5 stars, from 20,445 ratings on Google Play.

Who made Sandboxx?

Sandboxx was developed by Sandboxx, Inc. It is listed in the lifestyle category on Google Play.

What are the best alternatives to Sandboxx?

People looking at Sandboxx also look at these lifestyle apps: USAF Delayed Entry Program, Veterans of Foreign Wars, UK Postbox, My Exchange, GMX - Mail & Cloud.

Share Sandboxx

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Overview Alternatives History Reviews Rankings Technology
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