# My Mailbox App vs ShiftCal

The clearest difference is iOS requirement: My Mailbox App at 13.0 against ShiftCal's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. My Mailbox App sells 2 one-off in-app purchases and ShiftCal sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | My Mailbox App | ShiftCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/shiftcal-shift-schedule-maker/id6578443138/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 167 MB | 63 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [The Trustee for The Tambe Family Trust](https://appshunter.io/developer/1470052400) | [nguyen thanh](https://appshunter.io/developer/1481436893) |

## What reviewers say

### My Mailbox App

[App page](https://appshunter.io/ios/app/my-mailbox-app/id6504913598)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $1.99 | one-time |
| Premium Plan | $5.99 | one-time |


### ShiftCal

[App page](https://appshunter.io/ios/app/shiftcal-shift-schedule-maker/id6578443138)

Effortlessly manage your work shifts with custom planning, automatic reminders, and time tracking. Estimate your pay and view your schedule in multiple formats. Syncs across devices for easy access.

**Highlights:** Custom shift planning, Automatic shift notifications, Time tracking and logging, Pay calculation, Multiple schedule views, Cross-device sync

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Premium | $4.99 | per month |
| 1 Year Premium | $19.99 | per year |
| First Pack | $24.99 | one-time |


## Frequently asked questions

### Is My Mailbox App free?

My Mailbox App is free to download, with in-app purchases available.

### Is ShiftCal free?

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

### Do My Mailbox App or ShiftCal have ads?

Neither My Mailbox App nor ShiftCal shows ads.

### Which is updated more often, My Mailbox App or ShiftCal?

My Mailbox App ships an update every 3 weeks, and ShiftCal every 3 weeks. Most recently, My Mailbox App was updated on October 3, 2026 and ShiftCal on October 6, 2026.

---

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