Santa's Mailbox vs Brain Printer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Santa's Mailbox
Write and send letters to Santa Claus, track gift deliveries, and count down to Christmas. Requires adult email confirmation for sending letters.
- Write letters to Santa Claus
- Adult email registration and confirmation
- Countdown to Christmas
- Track gift deliveries
- Edit letters
- Send letters digitally
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In Santa's Mailbox you can: - Write your letter to Santa Claus - Register with the email of an adult - Confirm the sending of your letter by email - Count the days until Christmas - Make changes in your letter - Follow the delivery of gifts from Santa Claus at Christmas The elves and Santa are working on your gifts Don't be late to send your letter to Santa's Mailbox!
Brain Printer
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.
- Brain size estimation
- Facial scanning technology
- 3D model generation
- Downloadable STL file
- Share results
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Measure Your Brain Size & Create a 3D Model Scan your head, estimate brain size, and generate a 3D-printable model in seconds. Using facial scanning technology, the app calculates head circumference and brain volume, then converts the data into a downloadable STL file. Features: • Brain Size Estimation – Get an approximation of your brain volume based on head measurements. • Face Scanning – Uses your device’s camera to capture head shape and dimensions. • 3D Model Generation – Creates a printable STL file of your estimated brain size. • Download & Share – Save your model for 3D printing or share your results. Get started now and turn your scan into a 3D model. End User License Agreement: www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
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. 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.
| Parameter | Santa's Mailbox | Brain Printer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (77 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 77 — better | 2 |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 26.0 | 18.2 — better |
| Further details — not scored | ||
| Size | 48 MB | 220 MB |
| Age rating | 4+ | 17+ |
| Developer | Joel Andre Hernandez Infante | Steven Strange |
Customer experience
Santa's Mailbox
Brain Printer
In-app purchases
Santa's Mailbox
No in-app purchases
Brain Printer
- Save Unlimited STL Files$2.997 Days
- Single STL File$4.99
Questions
Is Santa's Mailbox free?
Is Brain Printer free?
Which has better reviews, Santa's Mailbox or Brain Printer?
Do Santa's Mailbox or Brain Printer have ads?
Which is updated more often, Santa's Mailbox or Brain Printer?
Other comparisons
