# Nullify vs MellowLines 2

The clearest difference is price: MellowLines 2 at Free against Nullify's $1.99. Nullify's advantage is in-app purchases (none vs 7) and ads (none vs shown).

MellowLines 2 is free to download; Nullify costs $1.99 up front. MellowLines 2 sells 7 one-off in-app purchases. Nullify asks for nothing beyond the download.

## The numbers

| Metric | Nullify | MellowLines 2 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 46 MB | 11 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Saoud](https://appshunter.io/developer/1675476803) | [ChanGyu Kang](https://appshunter.io/developer/1869205578) |

## 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


### MellowLines 2

[App page](https://appshunter.io/ios/app/mellowlines-2-block-puzzle/id6806662693)

Fill every block on the board with a single, continuous line. This puzzle game offers over 1,000 levels with progressively challenging stages. Utilize hints and solutions to overcome difficult puzzles and earn stars to track your progress.

**Highlights:** 1,000+ puzzle levels, Simple one-line gameplay, Progressive difficulty, Challenge Mode, Hints, solutions, and skips, Star progression system, Game Center support

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hint Pack · 10 | $0.99 | one-time |
| Answer Fill Pack · 5 | $0.99 | one-time |
| Hint Pack · 30 | $1.99 | one-time |
| Answer Fill Pack · 15 | $1.99 | one-time |
| Hint Pack · 60 | $2.99 | one-time |
| Answer Fill Pack · 30 | $2.99 | one-time |
| MellowLines 2 Pro | $3.99 | one-time |


## Frequently asked questions

### Is Nullify free?

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

### Is MellowLines 2 free?

MellowLines 2 is free to download, with in-app purchases available.

### Do Nullify or MellowLines 2 have ads?

MellowLines 2 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.*