# Santa's Mailbox vs Brain Printer

The clearest difference is in-app purchases: Santa's Mailbox at none against Brain Printer's 2. Santa's Mailbox also leads on ratings volume (77 vs 2). Brain Printer's advantage is update cadence (fortnightly vs every 7 months) and iOS requirement (18.2 vs 26.0). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Brain Printer sells 2 in-app purchases, starting at $2.99 per 7 days. Santa's Mailbox asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Santa's Mailbox against 5.0 for Brain Printer. That said, the two scores are not equally well evidenced: Santa's Mailbox has 77 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Santa's Mailbox ships an update every 7 months, Brain Printer fortnightly. The most recent releases landed on September 18, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Santa's Mailbox | Brain Printer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (77 ratings)](https://appshunter.io/ios/app/santas-mailbox/id1639643573/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brain-printer/id6741827154/reviews)** |
| Number of ratings | **77** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 48 MB | 220 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Joel Andre Hernandez Infante](https://appshunter.io/developer/1593113149) | [Steven Strange](https://appshunter.io/developer/1637538508) |

## What reviewers say

### Santa's Mailbox

[App page](https://appshunter.io/ios/app/santas-mailbox/id1639643573)

Write and send letters to Santa Claus, track gift deliveries, and count down to Christmas. Requires adult email confirmation for sending letters.

**Highlights:** Write letters to Santa Claus, Adult email registration and confirmation, Countdown to Christmas, Track gift deliveries, Edit letters, Send letters digitally

**In-app purchases:** none


### Brain Printer

[App page](https://appshunter.io/ios/app/brain-printer/id6741827154)

Scan your head to estimate brain volume and generate a 3D-printable model. This app uses facial scanning to calculate head circumference and convert measurements into a downloadable STL file for 3D printing.

**Highlights:** Brain size estimation, Facial scanning technology, 3D model generation, Downloadable STL file, Share results

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Save Unlimited STL Files | $2.99 | per 7 days |
| Single STL File | $4.99 | one-time |


## Frequently asked questions

### Is Santa's Mailbox free?

Santa's Mailbox is free to download, with no in-app purchases.

### Is Brain Printer free?

Brain Printer is free to download, with in-app purchases available.

### Which has better reviews, Santa's Mailbox or Brain Printer?

Brain Printer is rated higher. Santa's Mailbox averages 4.9 out of 5 from 77 ratings, while Brain Printer averages 5.0 from 2 ratings.

### Do Santa's Mailbox or Brain Printer have ads?

Neither Santa's Mailbox nor Brain Printer shows ads.

### Which is updated more often, Santa's Mailbox or Brain Printer?

Santa's Mailbox ships an update every 7 months, and Brain Printer fortnightly. Most recently, Santa's Mailbox was updated on September 18, 2026 and Brain Printer on June 4, 2026.

---

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