# Nullify vs DotToDot Rescue

The clearest difference is price: DotToDot Rescue at Free against Nullify's $1.99. Nullify's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

DotToDot Rescue is free to download; Nullify costs $1.99 up front. DotToDot Rescue sells 1 one-off in-app purchase. Nullify asks for nothing beyond the download.

## The numbers

| Metric | Nullify | DotToDot Rescue |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 weeks |
| Size | 46 MB | 105 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Saoud](https://appshunter.io/developer/1675476803) | [Kyung Hyun Park](https://appshunter.io/developer/1303604119) |

## What reviewers say

### Nullify

[App page](https://appshunter.io/ios/app/nullify-merge-math/id6446024471)

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

**In-app purchases:** none


### DotToDot Rescue

[App page](https://appshunter.io/ios/app/dottodot-rescue/id6504587944)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |


## Frequently asked questions

### Is Nullify free?

Nullify costs $1.99, with no in-app purchases.

### Is DotToDot Rescue free?

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

### Do Nullify or DotToDot Rescue have ads?

DotToDot Rescue shows ads; Nullify 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.*