# FCJ Spelling vs Let's Build Sentences

The clearest difference is in-app purchases: FCJ Spelling at none against Let's Build Sentences's 1. FCJ Spelling also leads on iOS requirement (9.0 vs 17.0). Let's Build Sentences's advantage is ads (none vs shown) and update cadence (every 4 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. Let's Build Sentences sells 1 one-off in-app purchase. FCJ Spelling asks for nothing beyond the download.

FCJ Spelling ships an update every 6 weeks, Let's Build Sentences every 4 days. Both last shipped on October 6, 2026.

## The numbers

| Metric | FCJ Spelling | Let's Build Sentences |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/fcj-spelling/id1277629350/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 41 MB | 5 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Niall Kehoe](https://appshunter.io/developer/845323924) | [Brian Leary](https://appshunter.io/developer/1869693110) |

## What reviewers say

### FCJ Spelling

[App page](https://appshunter.io/ios/app/fcj-spelling/id1277629350)

This app helps users of all ages improve their spelling, with a focus on individuals with learning difficulties like dyslexia. It offers 10 weekly exercises designed to enhance reading and writing skills. Students can submit their progress to teachers directly through the app.

**Highlights:** Spelling exercises, Dyslexia support, Progress tracking, Teacher submission, Color overlay option, Student result management

**Features:** macOS Compatibility

**In-app purchases:** none


### Let's Build Sentences

[App page](https://appshunter.io/ios/app/lets-build-sentences/id6761413051)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $4.99 | one-time |


## Frequently asked questions

### Is FCJ Spelling free?

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

### Is Let's Build Sentences free?

Let's Build Sentences is free to download, with in-app purchases available.

### Do FCJ Spelling or Let's Build Sentences have ads?

FCJ Spelling shows ads; Let's Build Sentences does not.

### Which is updated more often, FCJ Spelling or Let's Build Sentences?

FCJ Spelling ships an update every 6 weeks, and Let's Build Sentences every 4 days. Most recently, FCJ Spelling was updated on October 6, 2026 and Let's Build Sentences 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.*