# Sandboxx vs ChairMate

The clearest difference is chart position: Sandboxx at #100 against ChairMate's unranked. ChairMate's advantage is iOS requirement (15.0 vs 17.6). On price, update cadence, 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.

Sandboxx ships an update every 2 weeks, ChairMate every 11 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sandboxx | ChairMate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (182K ratings)](https://appshunter.io/ios/app/sandboxx/id912636512/reviews)** | — |
| Number of ratings | **182K** | — |
| Positive reviews | 72.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | Free | — |
| Best chart rank | **#100** | — |
| Size | 127 MB | 15 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sandboxx, Inc.](https://appshunter.io/developer/912636515) | [ChairMate LLC](https://appshunter.io/developer/6776869127) |

## What reviewers say

### Sandboxx

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

**Currently charting:** #100 Top Free · Lifestyle (US App Store)

Easily send digital letters, photos, and gift cards to service members. Receive weekly training updates and access military news and products. Connect with your recruit throughout their journey.

**Highlights:** Digital letter writing, Overnight shipping, Letter tracking, Weekly training updates, Military news, Shop for recruit products

**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- 🗓️ Outdated weekly updates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


### ChairMate

[App page](https://appshunter.io/ios/app/chairmate/id6776869125)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sandboxx free?

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

### Is ChairMate free?

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

### Do Sandboxx or ChairMate have ads?

Neither Sandboxx nor ChairMate shows ads.

### Which is updated more often, Sandboxx or ChairMate?

Sandboxx ships an update every 2 weeks, and ChairMate every 11 days. Most recently, Sandboxx was updated on November 11, 2026 and ChairMate on October 31, 2026.

---

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