# Solvemoji vs 21 Smash

The clearest difference is in-app purchases: 21 Smash at none against Solvemoji's 1. Solvemoji's advantage is ads (none vs shown) and update cadence (every 2 months vs every 4 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Solvemoji sells 1 in-app purchase, starting at $19.99 per year. 21 Smash asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Solvemoji against 4.7 for 21 Smash. Both are backed by a comparable volume of ratings — 83 and 36 respectively. Written reviews are what separate them: 93% of Solvemoji's written reviews are positive against 100% of 21 Smash's.

Solvemoji ships an update every 2 months, 21 Smash every 4 months. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Solvemoji | 21 Smash |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (83 ratings)](https://appshunter.io/ios/app/solvemoji/id1458075012/reviews)** | [4.7 (36 ratings)](https://appshunter.io/ios/app/21-smash/id1503908117/reviews) |
| Number of ratings | **83** | 36 |
| Positive reviews | 92.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 49 MB | 19 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Laurence Arnott](https://appshunter.io/developer/1457672612) | [AB Norri Stockholm](https://appshunter.io/developer/1503908116) |

## What reviewers say

### Solvemoji

[App page](https://appshunter.io/ios/app/solvemoji/id1458075012)

This app uses emojis to create engaging math and logic puzzles for students, teachers, and parents. It offers various puzzle types, progress tracking, and tools to make learning fun and accessible. It's designed to build confidence and critical thinking skills.

**Highlights:** Emoji math and logic puzzles, Classic, Grid, Word, Doku, and Odd Emoji puzzles, Draw-on-screen tools, Progress tracking, Full website sync, Teacher and school management features

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solvemoji Premium | $19.99 | per year |


### 21 Smash

[App page](https://appshunter.io/ios/app/21-smash/id1503908117)

A fast-paced, single-player card game blending Solitaire and Blackjack mechanics. Aim to reach 21 or stack five cards to clear them, challenging the clock for high scores and leaderboard rankings.

**Highlights:** Fast-paced single-player gameplay, Mix of Solitaire and Blackjack, Reach 21 or stack five cards, Daily and weekly leaderboards, Addictive combos and time challenges, Casual graphics and rich sounds

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solvemoji free?

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

### Is 21 Smash free?

21 Smash is free to download, with no in-app purchases.

### Which has better reviews, Solvemoji or 21 Smash?

Solvemoji is rated higher. Solvemoji averages 4.8 out of 5 from 83 ratings, while 21 Smash averages 4.7 from 36 ratings.

### Do Solvemoji or 21 Smash have ads?

21 Smash shows ads; Solvemoji does not.

### Which is updated more often, Solvemoji or 21 Smash?

Solvemoji ships an update every 2 months, and 21 Smash every 4 months. Most recently, Solvemoji was updated on October 15, 2026 and 21 Smash on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*