# Happi Spells vs FLEX

The clearest difference is review sentiment: Happi Spells at 100% against FLEX's 0%. Happi Spells also leads on update cadence (every 4 months vs every 19 months) and iOS requirement (6.0 vs 9.3). FLEX's advantage is price (Free vs $2.99). On ads, in-app purchases and device support there is nothing between them.

FLEX is free to download; Happi Spells costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Happi Spells ships an update every 4 months, FLEX every 19 months. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Happi Spells | FLEX |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/happi-spells/id464675842/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | Paid | **Free** |
| Size | 54 MB | 7 MB |
| Requires iOS | **6.0** | 9.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Happi Papi LLC](https://appshunter.io/developer/825047881) | [Leripa AB](https://appshunter.io/developer/454449587) |

## What reviewers say

### Happi Spells

[App page](https://appshunter.io/ios/app/happi-spells/id464675842)

This educational game helps young children practice spelling through interactive mini crossword puzzles. It features colorful illustrations, audio feedback, and a scoring system to make learning fun and engaging.

**Highlights:** 60 mini crossword puzzles, Over 300 words, Drag and drop letter tiles, Audio feedback, Earn points and snails, Hundreds of illustrations

**Features:** macOS Compatibility

**In-app purchases:** none


### FLEX

[App page](https://appshunter.io/ios/app/flex-math-tools/id977115416)

This interactive educational tool helps teachers visualize basic math concepts like fractions and number lines. It allows for the creation of independent student projects and supplements math training programs. Enhance understanding of mathematical skills with various visual aids.

**Highlights:** Number lines visualization, Fraction tools, Number bonds, Number blocks, Create student projects, Mathematical symbols

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

**In-app purchases:** none


## Frequently asked questions

### Is Happi Spells free?

Happi Spells costs $2.99, with no in-app purchases.

### Is FLEX free?

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

### Do Happi Spells or FLEX have ads?

Neither Happi Spells nor FLEX shows ads.

### Which is updated more often, Happi Spells or FLEX?

Happi Spells ships an update every 4 months, and FLEX every 19 months. Most recently, Happi Spells was updated on October 18, 2026 and FLEX 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.*