# Sandboxx vs Calvary Dover

The clearest difference is update cadence: Sandboxx at every 10 days against Calvary Dover's every 12 months. Sandboxx also leads on ratings volume (182K vs 5) and chart position (#108 vs unranked). Calvary Dover's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 17.6). On price, rating, ads and in-app purchases 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 Calvary Dover. That said, the two scores are not equally well evidenced: Sandboxx has 182K ratings behind it against 5, so its average is the more settled of the two.

Sandboxx ships an update every 10 days, Calvary Dover every 12 months. The most recent releases landed on November 9, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Sandboxx | Calvary Dover |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (182K ratings)](https://appshunter.io/ios/app/sandboxx/id912636512/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/calvary-dover/id1167722374/reviews)** |
| Number of ratings | **182K** | 5 |
| Positive reviews | 72.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 12 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#108** | — |
| Size | 122 MB | 44 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Sandboxx, Inc.](https://appshunter.io/developer/912636515) | [THE CALVARY ASSEMBLY OF GOD CHURCH, INC.,](https://appshunter.io/developer/1503378726) |

## What reviewers say

### Sandboxx

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

**Currently charting:** #108 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


### Calvary Dover

[App page](https://appshunter.io/ios/app/calvary-dover/id1167722374)

Stay connected with your church community and access the latest sermons and event reminders. This app provides a direct link to church content and updates, making it easy to engage with the community from anywhere.

**Highlights:** Watch latest sermons, Stay connected with church, Receive event reminders, Access community updates, Engage with church content

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sandboxx free?

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

### Is Calvary Dover free?

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

### Which has better reviews, Sandboxx or Calvary Dover?

Calvary Dover is rated higher. Sandboxx averages 4.9 out of 5 from 182K ratings, while Calvary Dover averages 5.0 from 5 ratings.

### Do Sandboxx or Calvary Dover have ads?

Neither Sandboxx nor Calvary Dover shows ads.

### Which is updated more often, Sandboxx or Calvary Dover?

Sandboxx ships an update every 10 days, and Calvary Dover every 12 months. Most recently, Sandboxx was updated on November 9, 2026 and Calvary Dover on November 2, 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.*