Sandboxx vs Cari Crew
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sandboxx
Easily send digital letters, photos, and gift cards to service members in basic training and beyond. Receive weekly training updates and access military news and products. Developed by veterans to support the military community.
- Digital letter writing
- Overnight shipping
- Letter tracking
- Weekly training updates
- Military news
- Gift card options
- Veteran support staff
Read full descriptionHide full description
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 6 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 1 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 a photo 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 Earn badges and become your recruit’s ultimate supporter No Federal or DoD Endorsement Implied. Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
Cari Crew
This app connects individuals with opportunities to earn money by providing various services across the Caribbean. Users can choose to drive passengers, deliver food, or transport packages, offering flexibility and reliable income.
- Be your own boss
- Flexible work schedule
- Reliable earnings
- Drive passengers
- Deliver food and packages
- 24/7 support
Read full descriptionHide full description
Hello Cari Crew Partners, We're excited to be on this journey with you. Partnering with us helps to boost your earning potential and build a sustainable livelihood. Cari is a superapp offering essential everyday services to all throughout the Caribbean. It is our mission to drive the Caribbean forward by creating economic empowerment for you and everyone in the region. By signing up as a Cari Crew partner you have a unique combination of flexibility and stability: - You get to be your own boss - decide when, where and how often you want to work. - Maintain a source of reliable earnings - Cari gives you access to thousands of customers, cash out options, and even upskilling opportunities to help you plan your future. - You could choose to drive passengers or deliver food and other packages, or do all of these with just a single app. And you will have the most committed Cari Crew Support teams waiting to serve you around the clock when you need help. Find out more about us at www.cariapp.com Cari offers the ability for users to receive personalized targeted advertising, offers and updates from Cari and its partners and communications/advertising from certain third party apps based on activity on your devices. Users may exercise opt-out choices under the Privacy and Consent Management sections within Settings within the app. For further details, you may refer to our Privacy Policy at www.cariapp.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Sandboxx at every 2 weeks against Cari Crew's every 6 months. Sandboxx also leads on ratings volume (174K vs 2) and chart position (#81 vs unranked). Cari Crew's advantage is review sentiment (100% vs 73%) and monetization model (free vs free with in-app purchases). On price, rating, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Sandboxx against 5.0 for Cari Crew. That said, the two scores are not equally well evidenced: Sandboxx has 174K ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 73% of Sandboxx's written reviews are positive against 100% of Cari Crew's.
Sandboxx ships an update every 2 weeks, Cari Crew every 6 months. The most recent releases landed on September 27, 2026 and September 11, 2026 respectively.
| Parameter | Sandboxx | Cari Crew |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (174K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 73.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 174K — better | 2 |
| Update frequency | Every 2 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #81 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 120 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | Sandboxx, Inc. | CariCab L.L.C |
Customer experience
Sandboxx
Cari Crew
Bugs and requests
Sandboxx
Reported bugs
3 issues- Login issues and password reset problems
- Inconsistent letter delivery tracking
- Incorrect recruit information entered by Sandboxx
Requested features
5 requests- Allow editing of letters before sending
- Increase photo upload limit
- Provide refund or credit expiration policy
- Improve in-app search and address management
- Sync weekly updates with recruit's actual schedule
Cari Crew
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sandboxx
No in-app purchases
Cari Crew
No in-app purchases









