# SliceSum vs Decodex

The clearest difference is ads: Decodex at none against SliceSum's shown. Decodex also leads on update cadence (every 2 days vs weekly). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. SliceSum sells 1 one-off in-app purchase and Decodex sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for SliceSum against 5.0 for Decodex. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

SliceSum ships an update weekly, Decodex every 2 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | SliceSum | Decodex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/slicesum/id6754727987/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/decodex-cryptogram-game/id6758961298/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 57 MB | 19 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Smith](https://appshunter.io/developer/1839832764) | [Aron Csatlos](https://appshunter.io/developer/1661657865) |

## What reviewers say

### SliceSum

[App page](https://appshunter.io/ios/app/slicesum/id6754727987)

Engage your mind with a daily math puzzle game where you strategically place symbols between numbers to reach a target value. Enjoy quick, satisfying challenges with streak tracking and multiple difficulty levels. Play offline and keep your data private.

**Highlights:** Daily math puzzles, Number slicing gameplay, Streak tracking, Multiple difficulty levels, Offline play, Light and dark mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SliceSum Premium | $3.99 | one-time |


### Decodex

[App page](https://appshunter.io/ios/app/decodex-cryptogram-game/id6758961298)

Engage in a modern take on classic cryptogram puzzles. Decipher quotes and enigma codes across diverse categories. Track your progress, build streaks, and enjoy a new challenge daily.

**Highlights:** 50+ puzzle categories, Daily enigma challenges, Intuitive user interface, Progress tracking and streaks, Substitution cipher gameplay

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Hints - Small Pack | $0.99 | one-time |
| Extra Hints - Big Pack | $1.99 | one-time |
| Decodex Premium | $2.99 | one-time |
| Extra Hints - Ultimate Pack | $4.99 | one-time |


## Frequently asked questions

### Is SliceSum free?

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

### Is Decodex free?

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

### Which has better reviews, SliceSum or Decodex?

SliceSum and Decodex are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do SliceSum or Decodex have ads?

SliceSum shows ads; Decodex does not.

### Which is updated more often, SliceSum or Decodex?

SliceSum ships an update weekly, and Decodex every 2 days. Most recently, SliceSum was updated on October 24, 2026 and Decodex on October 24, 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.*