# Zipinmail I Virtual Mailbox vs NibbleCalc

The clearest difference is in-app purchases: Zipinmail I Virtual Mailbox at none against NibbleCalc's 1. Zipinmail I Virtual Mailbox also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. NibbleCalc sells 1 one-off in-app purchase. Zipinmail I Virtual Mailbox asks for nothing beyond the download.

Zipinmail I Virtual Mailbox ships an update every 6 weeks, NibbleCalc every 2 months. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Zipinmail I Virtual Mailbox | NibbleCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (9 ratings)](https://appshunter.io/ios/app/zipinmail-i-virtual-mailbox/id1595343665/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 55 MB | 4 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digital Mailbox, Inc.](https://appshunter.io/developer/1595343877) | [LiChuan Lin](https://appshunter.io/developer/1895785594) |

## What reviewers say

### Zipinmail I Virtual Mailbox

[App page](https://appshunter.io/ios/app/zipinmail-i-virtual-mailbox/id1595343665)

This app provides a digital mailbox service, delivering your physical mail to your phone. It aims to eliminate paper mail and clutter, offering digital coupons and discounts from local merchants.

**Highlights:** Digital mail delivery, Virtual mailbox address, Mobile mailbox access, Digital coupon saving, Eliminates paper mail

**In-app purchases:** none


### NibbleCalc

[App page](https://appshunter.io/ios/app/nibblecalc-dev-calculator/id6765700593)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Zipinmail I Virtual Mailbox free?

Zipinmail I Virtual Mailbox is free to download, with no in-app purchases.

### Is NibbleCalc free?

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

### Do Zipinmail I Virtual Mailbox or NibbleCalc have ads?

Neither Zipinmail I Virtual Mailbox nor NibbleCalc shows ads.

### Which is updated more often, Zipinmail I Virtual Mailbox or NibbleCalc?

Zipinmail I Virtual Mailbox ships an update every 6 weeks, and NibbleCalc every 2 months. Most recently, Zipinmail I Virtual Mailbox was updated on October 12, 2026 and NibbleCalc on October 10, 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.*