# Word Unknown vs +/

Word Unknown and +/ both sit at 4.9 stars, but that hides the real split: 100% of Word Unknown's written reviews are positive against 33% of +/'s. Word Unknown also leads on in-app purchases (none vs 7) and ads (none vs shown). On price, rating, update cadence and device support there is nothing between them.

Both are free to download. +/ sells 7 one-off in-app purchases. Word Unknown asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Word Unknown against 5.0 for +/. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews are what separate them: 100% of Word Unknown's written reviews are positive against 33% of +/'s.

Both ship on a similar rhythm, roughly every 16 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Word Unknown | +/ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (11 ratings)](https://appshunter.io/ios/app/word-unknown/id1064901570/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/plus-0-number-puzzle/id1139669462/reviews)** |
| Number of ratings | **11** | 3 |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | Every 16 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 118 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cinq-Mars Media](https://appshunter.io/developer/924648806) | [Greentail, Inc.](https://appshunter.io/developer/1111479312) |

## What reviewers say

### Word Unknown

[App page](https://appshunter.io/ios/app/word-unknown/id1064901570)

A fun and simple word guessing game inspired by Hangman and Mastermind. Use logic to deduce a hidden word within a limited number of attempts, receiving feedback on correct letters and positions. Offers multiple difficulty levels and a daily challenge for competitive play.

**Highlights:** Word guessing gameplay, Lexical and deductive logic, Letter position feedback (X's and O's), Five difficulty levels, Daily challenge mode, Free and open source

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

**In-app purchases:** none


### +/

[App page](https://appshunter.io/ios/app/plus-0-number-puzzle/id1139669462)

A unique brain training puzzle game where you connect number tiles. Tiles of the same color add, while different colors subtract. Master spells and create life-forms using the power of zero to enhance your gameplay.

**Highlights:** Connect same number tiles, Add same color tiles, Subtract different color tiles, Master unique spells, Create life-forms with zero, Brain training puzzle

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flask of Essences | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Cashman | $1.99 | one-time |
| Bottle of Essences | $3.99 | one-time |
| Bucket of Essences | $9.99 | one-time |
| Tank of Essences | $39.99 | one-time |
| Bath of Essences | $79.99 | one-time |


## Frequently asked questions

### Is Word Unknown free?

Word Unknown is free to download, with no in-app purchases.

### Is +/ free?

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

### Which has better reviews, Word Unknown or +/?

+/ is rated higher. Word Unknown averages 4.9 out of 5 from 11 ratings, while +/ averages 5.0 from 3 ratings.

### Do Word Unknown or +/ have ads?

+/ shows ads; Word Unknown does not.

### Which is updated more often, Word Unknown or +/?

Word Unknown ships an update every 16 months, and +/ every 16 months. Most recently, Word Unknown was updated on October 24, 2026 and +/ on October 16, 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.*