# Wattify vs ChangeDay

The clearest difference is device support: Wattify at 3 against ChangeDay's 1. Wattify also leads on iOS requirement (15.1 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Wattify | ChangeDay |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 69 MB | 5 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wattify BV](https://appshunter.io/developer/1721711884) | [jonathan hering](https://appshunter.io/developer/1887130948) |

## What reviewers say

### Wattify

[App page](https://appshunter.io/ios/app/wattify/id6474477039)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChangeDay

[App page](https://appshunter.io/ios/app/changeday-simple-reminders/id6766130529)

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

**In-app purchases:** none


## Frequently asked questions

### Is Wattify free?

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

### Is ChangeDay free?

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

### Do Wattify or ChangeDay have ads?

Neither Wattify nor ChangeDay shows ads.

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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.*