# Deep Water Mining Factory vs Cross Sum Mania

The clearest difference is in-app purchases: Cross Sum Mania at none against Deep Water Mining Factory's 1. Cross Sum Mania also leads on ads (none vs shown). Deep Water Mining Factory's advantage is update cadence (every 5 days vs every 3 weeks) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Deep Water Mining Factory sells 1 one-off in-app purchase. Cross Sum Mania asks for nothing beyond the download.

Deep Water Mining Factory ships an update every 5 days, Cross Sum Mania every 3 weeks. The most recent releases landed on October 27, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Deep Water Mining Factory | Cross Sum Mania |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cross-sum-mania/id6670564521/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 231 MB | 4 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sung Joon Kim](https://appshunter.io/developer/1670599180) | [Gilbert Gonsalves](https://appshunter.io/developer/492123194) |

## What reviewers say

### Deep Water Mining Factory

[App page](https://appshunter.io/ios/app/deep-water-mining-factory/id1670599178)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP 5 level boost (Qtr 10) | $3.99 | one-time |


### Cross Sum Mania

[App page](https://appshunter.io/ios/app/cross-sum-mania/id6670564521)

Solve challenging number puzzles by completing overlapping equations. Use digits 1-9 once per puzzle to fulfill both horizontal and vertical math problems. This free game offers a fun and mentally stimulating experience.

**Highlights:** Overlapping horizontal and vertical equations, Uses digits 1-9 once per puzzle, Requires completion of all equations, Challenging logic gameplay, Free to play

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Deep Water Mining Factory free?

Deep Water Mining Factory is free to download, with in-app purchases available.

### Is Cross Sum Mania free?

Cross Sum Mania is free to download, with no in-app purchases.

### Do Deep Water Mining Factory or Cross Sum Mania have ads?

Deep Water Mining Factory shows ads; Cross Sum Mania does not.

### Which is updated more often, Deep Water Mining Factory or Cross Sum Mania?

Deep Water Mining Factory ships an update every 5 days, and Cross Sum Mania every 3 weeks. Most recently, Deep Water Mining Factory was updated on October 27, 2026 and Cross Sum Mania on October 4, 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.*