# Simplex Spelling HD vs Inference Clues

The clearest difference is price: Simplex Spelling HD at $4.99 against Inference Clues's $7.99. Simplex Spelling HD also leads on review sentiment (90% vs 80%). Inference Clues's advantage is iOS requirement (12.2 vs 15.0). On rating, ratings volume, update cadence and ads there is nothing between them.

Simplex Spelling HD costs $4.99 and Inference Clues $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.2 for Simplex Spelling HD against 3.3 for Inference Clues. Both are backed by a comparable volume of ratings — 5 and 6 respectively. Written reviews are what separate them: 90% of Simplex Spelling HD's written reviews are positive against 80% of Inference Clues's.

Simplex Spelling HD ships an update every 3 months, Inference Clues every 4 months. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Simplex Spelling HD | Inference Clues |
| --- | --- | --- |
| Price | **$4.99** | $7.99 |
| Rating | [3.2 (5 ratings)](https://appshunter.io/ios/app/simplex-spelling-hd/id456744012/reviews) | **[3.3 (6 ratings)](https://appshunter.io/ios/app/inference-clues/id877775935/reviews)** |
| Number of ratings | 5 | **6** |
| Positive reviews | **90.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 134 MB | 24 MB |
| Requires iOS | 15.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pyxwise Software Inc.](https://appshunter.io/developer/456744015) | [Janine Toole](https://appshunter.io/developer/839832427) |

## What reviewers say

### Simplex Spelling HD

[App page](https://appshunter.io/ios/app/simplex-spelling-hd/id456744012)

This app enhances English spelling and reading skills using a unique "reverse phonics" approach and contextually relevant spelling rules. It acts as a personal spelling coach, teaching foundational Dolch sight words through interactive word building and immediate feedback.

**Highlights:** Teaches Dolch Sight words, Reverse phonics approach, Contextual spelling rules, Interactive word building, Phonics hint feature, Letter-by-letter feedback, Multiple user accounts

**Features:** macOS Compatibility

**In-app purchases:** none


### Inference Clues

[App page](https://appshunter.io/ios/app/inference-clues/id877775935)

This app helps children develop reading comprehension by teaching them to identify inference clues. It offers a step-by-step, game-like learning experience with guided instruction and a reward system to keep young learners motivated.

**Highlights:** Builds inference skills step-by-step, Incremental learning with unlocked levels, Independent or therapist use, Guided learning for correct answers, Engaging Reward Center, Timers for fluency practice, Detailed reporting for up to 10 students

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Simplex Spelling HD free?

Simplex Spelling HD costs $4.99, with no in-app purchases.

### Is Inference Clues free?

Inference Clues costs $7.99, with no in-app purchases.

### Which has better reviews, Simplex Spelling HD or Inference Clues?

Inference Clues is rated higher. Simplex Spelling HD averages 3.2 out of 5 from 5 ratings, while Inference Clues averages 3.3 from 6 ratings.

### Do Simplex Spelling HD or Inference Clues have ads?

Neither Simplex Spelling HD nor Inference Clues shows ads.

### Which is updated more often, Simplex Spelling HD or Inference Clues?

Simplex Spelling HD ships an update every 3 months, and Inference Clues every 4 months. Most recently, Simplex Spelling HD was updated on October 13, 2026 and Inference Clues 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.*