# Shift Happens vs Immunization Record.

The clearest difference is in-app purchases: Shift Happens at none against Immunization Record.'s 3. Immunization Record.'s advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Immunization Record. sells 3 in-app purchases, starting at $7.99 per month. Shift Happens asks for nothing beyond the download.

## The numbers

| Metric | Shift Happens | Immunization Record. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | — |
| Size | 29 MB | 5 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ROBERT DOMINIC MCGREGOR](https://appshunter.io/developer/1847037209) | [Tu Anh Do](https://appshunter.io/developer/738947045) |

## What reviewers say

### Shift Happens

[App page](https://appshunter.io/ios/app/shift-happens/id6754194287)

**Features:** macOS Compatibility

**In-app purchases:** none


### Immunization Record.

[App page](https://appshunter.io/ios/app/immunization-record/id6761815042)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Immunization Premium Monthly | $7.99 | per month |
| Immunization Premium Yearly | $34.99 | per year |
| Immunization Premium Life Time | $49.99 | one-time |


## Frequently asked questions

### Is Shift Happens free?

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

### Is Immunization Record. free?

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

### Do Shift Happens or Immunization Record. have ads?

Shift Happens shows ads; Immunization Record. does not.

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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.*