# Sandboxx vs Camp Carl

The clearest difference is ads: Sandboxx at none against Camp Carl's shown. Sandboxx also leads on update cadence (every 10 days vs every 12 months) and ratings volume (182K vs 13). Camp Carl's advantage is review sentiment (100% vs 73%) and monetization model (ad-supported vs free with in-app purchases). On price, rating, in-app purchases and device support there is nothing between them.

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 Camp Carl. That said, the two scores are not equally well evidenced: Sandboxx has 182K ratings behind it against 13, 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 Camp Carl's.

Sandboxx ships an update every 10 days, Camp Carl every 12 months. The most recent releases landed on November 8, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sandboxx | Camp Carl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (182K ratings)](https://appshunter.io/ios/app/sandboxx/id912636512/reviews) | **[5.0 (13 ratings)](https://appshunter.io/ios/app/camp-carl/id1622151269/reviews)** |
| Number of ratings | **182K** | 13 |
| Positive reviews | 72.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 12 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Best chart rank | **#96** | — |
| Size | 122 MB | 108 MB |
| Requires iOS | 17.6 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sandboxx, Inc.](https://appshunter.io/developer/912636515) | [Tom Sullivan](https://appshunter.io/developer/1774523630) |

## What reviewers say

### Sandboxx

[App page](https://appshunter.io/ios/app/sandboxx/id912636512)

**Currently charting:** #96 Top Free · Lifestyle (US App Store)

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.

**Highlights:** Digital letter writing, Overnight shipping, Letter tracking, Weekly training updates, Military news, Gift card options, Veteran support staff

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Overnight delivery
- 📨 Convenient letter writing
- 📷 Ability to include photos
- 📝 Provided stationery and return postage
- 📢 Weekly updates on recruit's training

**What reviewers complain about**

- 💰 Expensive per letter
- 🐛 Frequent app crashes and bugs
- 🕰️ Delays in letter delivery
- 🔍 Difficulty finding recruit's address
- 🗓️ Outdated weekly updates

**Reported bugs**

- Login issues and password reset problems
- Inconsistent letter delivery tracking
- Incorrect recruit information entered by Sandboxx

**Requested features**

- 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


### Camp Carl

[App page](https://appshunter.io/ios/app/camp-carl/id1622151269)

Stay connected with your camper by sending messages and receiving daily updates. View photos and videos of camp activities, and get instant notifications when your child is featured. This app provides a front-row seat to camp life for parents and families.

**Highlights:** Send Bunk Notes to campers, View camp photos and videos, Receive photo notifications, Daily updates feed, Instant notifications for camper updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sandboxx free?

Sandboxx is free to download, with no in-app purchases.

### Is Camp Carl free?

Camp Carl is free to download, with no in-app purchases.

### Which has better reviews, Sandboxx or Camp Carl?

Camp Carl is rated higher. Sandboxx averages 4.9 out of 5 from 182K ratings, while Camp Carl averages 5.0 from 13 ratings.

### Do Sandboxx or Camp Carl have ads?

Camp Carl shows ads; Sandboxx does not.

### Which is updated more often, Sandboxx or Camp Carl?

Sandboxx ships an update every 10 days, and Camp Carl every 12 months. Most recently, Sandboxx was updated on November 8, 2026 and Camp Carl on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*