# InstaTags vs ShiftCal Shift Work Calendar

The clearest difference is in-app purchases: InstaTags at none against ShiftCal Shift Work Calendar's 3. InstaTags also leads on ads (none vs shown) and update cadence (every 2 days vs every 5 days). On price and device support there is nothing between them.

Both are free to download. ShiftCal Shift Work Calendar sells 3 in-app purchases, starting at $2.99 per month. InstaTags asks for nothing beyond the download.

InstaTags ships an update every 2 days, ShiftCal Shift Work Calendar every 5 days. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | InstaTags | ShiftCal Shift Work Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 5 days |
| Size | 43 MB | 112 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Nicolas Moricet](https://appshunter.io/developer/1595637894) | [Pablo Almancio](https://appshunter.io/developer/1859498121) |

## What reviewers say

### InstaTags

[App page](https://appshunter.io/ios/app/instatags/id1595637892)

**Features:** macOS Compatibility

**In-app purchases:** none


### ShiftCal Shift Work Calendar

[App page](https://appshunter.io/ios/app/shiftcal-shift-work-calendar/id6757965010)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShiftCal PRO Monthly | $2.99 | per month |
| ShiftCal PRO Annual | $11.99 | per year |
| ShiftCal PRO Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is InstaTags free?

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

### Is ShiftCal Shift Work Calendar free?

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

### Do InstaTags or ShiftCal Shift Work Calendar have ads?

ShiftCal Shift Work Calendar shows ads; InstaTags does not.

### Which is updated more often, InstaTags or ShiftCal Shift Work Calendar?

InstaTags ships an update every 2 days, and ShiftCal Shift Work Calendar every 5 days. Most recently, InstaTags was updated on October 3, 2026 and ShiftCal Shift Work Calendar on October 12, 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.*