# Simplex Spelling Light vs Memory Math

The clearest difference is price: Simplex Spelling Light at Free against Memory Math's $2.99. Simplex Spelling Light also leads on update cadence (every 10 months vs every 38 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Simplex Spelling Light is free to download; Memory Math costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simplex Spelling Light ships an update every 10 months, Memory Math every 38 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Simplex Spelling Light | Memory Math |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.8 (11 ratings)](https://appshunter.io/ios/app/simplex-spelling-light/id465715154/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 77.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 38 months |
| Monetization | Free | — |
| Size | 257 MB | 6 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pyxwise Software Inc.](https://appshunter.io/developer/456744015) | [Sigma Sky, LLC](https://appshunter.io/developer/320947305) |

## What reviewers say

### Simplex Spelling Light

[App page](https://appshunter.io/ios/app/simplex-spelling-light/id465715154)

This app enhances spelling and reading skills with a unique "reverse phonics" approach and contextually relevant spelling rules. It offers interactive learning for various student types, providing immediate feedback and explanations for word construction.

**Highlights:** Reverse phonics approach, Contextual spelling rule hints, Letter-by-letter feedback, Over 50 high-frequency words, Spoken words in sentences, User stats and reporting

**Features:** macOS Compatibility

**In-app purchases:** none


### Memory Math

[App page](https://appshunter.io/ios/app/memory-math-plus-x/id1482272700)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simplex Spelling Light free?

Simplex Spelling Light is free to download, with no in-app purchases.

### Is Memory Math free?

Memory Math costs $2.99, with no in-app purchases.

### Do Simplex Spelling Light or Memory Math have ads?

Neither Simplex Spelling Light nor Memory Math shows ads.

### Which is updated more often, Simplex Spelling Light or Memory Math?

Simplex Spelling Light ships an update every 10 months, and Memory Math every 38 months. Most recently, Simplex Spelling Light was updated on October 12, 2026 and Memory Math on October 5, 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.*