# Deco Deck vs The Sum

The clearest difference is in-app purchases: The Sum at none against Deco Deck's 1. The Sum also leads on update cadence (every 3 weeks vs every 5 months). Deco Deck's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Deco Deck sells 1 one-off in-app purchase. The Sum asks for nothing beyond the download.

Deco Deck ships an update every 5 months, The Sum every 3 weeks. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Deco Deck | The Sum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/deco-deck/id1672666901/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 70 MB | 144 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Turner](https://appshunter.io/developer/1633315525) | [LIM SING CHYUAN](https://appshunter.io/developer/1825404821) |

## What reviewers say

### Deco Deck

[App page](https://appshunter.io/ios/app/deco-deck/id1672666901)

This logic puzzle challenges you to connect cards into groups of five, forming valid hands. Every card must be part of a hand to solve the puzzle, with each puzzle having a single unique solution. Daily free puzzles are available, with more accessible via subscription or a one-time purchase.

**Highlights:** Link cards into groups of five, Form valid card hands, Solve unique puzzles, Daily free puzzles, Subscription for more puzzles, Lifetime access option

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eternal | $9.99 | one-time |


### The Sum

[App page](https://appshunter.io/ios/app/the-sum-math-and-puzzle/id6757253249)

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

**In-app purchases:** none


## Frequently asked questions

### Is Deco Deck free?

Deco Deck is free to download, with in-app purchases available.

### Is The Sum free?

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

### Do Deco Deck or The Sum have ads?

The Sum shows ads; Deco Deck does not.

### Which is updated more often, Deco Deck or The Sum?

Deco Deck ships an update every 5 months, and The Sum every 3 weeks. Most recently, Deco Deck was updated on October 12, 2026 and The Sum on October 6, 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.*