# Simple Logarithm PRO vs Lexify™ Play 'n Read

The clearest difference is in-app purchases: Simple Logarithm PRO at none against Lexify™ Play 'n Read's 1. Simple Logarithm PRO also leads on price ($1.99 vs $4.99). Lexify™ Play 'n Read's advantage is update cadence (every 3 days vs monthly). On ads, monetization model, device support and iOS requirement there is nothing between them.

Simple Logarithm PRO costs $1.99 and Lexify™ Play 'n Read $4.99 up front. Lexify™ Play 'n Read sells 1 one-off in-app purchase. Simple Logarithm PRO asks for nothing beyond the download.

Simple Logarithm PRO ships an update monthly, Lexify™ Play 'n Read every 3 days. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Simple Logarithm PRO | Lexify™ Play 'n Read |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lexify-play-n-read/id6744832095/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Paid | Paid |
| Size | 180 MB | 35 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Creation Fitness](https://appshunter.io/developer/569147548) |

## What reviewers say

### Simple Logarithm PRO

[App page](https://appshunter.io/ios/app/simple-logarithm-pro/id1662897702)

This app simplifies complex logarithm and exponentiation calculations with step-by-step solutions. It supports various input types, including decimals, fractions, and negative values, and provides a history of all calculations.

**Highlights:** Logarithm and exponentiation modes, Step-by-step solution display, Support for decimals, fractions, and negative values, Calculation history, Transformation between logarithm and exponentiation, Logarithm rules infographic, Solution sharing

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

**In-app purchases:** none


### Lexify™ Play 'n Read

[App page](https://appshunter.io/ios/app/lexify-play-n-read/id6744832095)

This app helps emergent and dyslexic readers build foundational phonemic awareness skills through engaging gameplay. It offers 8 levels of interactive activities designed by literacy specialists to improve listening skills and sound manipulation, crucial for reading and spelling.

**Highlights:** 8 levels of phonemic awareness skill-building, Interactive games and instructional videos, Skill-based progression, Critical listening skill development, Progress tracking, Designed by literacy specialists

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lexify™ Play 'n Read | $9.99 | one-time |


## Frequently asked questions

### Is Simple Logarithm PRO free?

Simple Logarithm PRO costs $1.99, with no in-app purchases.

### Is Lexify™ Play 'n Read free?

Lexify™ Play 'n Read costs $4.99, and also offers in-app purchases.

### Do Simple Logarithm PRO or Lexify™ Play 'n Read have ads?

Neither Simple Logarithm PRO nor Lexify™ Play 'n Read shows ads.

### Which is updated more often, Simple Logarithm PRO or Lexify™ Play 'n Read?

Simple Logarithm PRO ships an update monthly, and Lexify™ Play 'n Read every 3 days. Most recently, Simple Logarithm PRO was updated on October 2, 2026 and Lexify™ Play 'n Read on October 6, 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.*