FCJ Spelling vs Let's Build Sentences
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FCJ Spelling
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.
- Spelling exercises
- Dyslexia support
- Progress tracking
- Teacher submission
- Color overlay option
- Student result management
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This app aims to help people of all ages to improve their spelling with a special emphasis on learning difficulties such as dyslexia. Through weekly use and completion of the 10 exercises included in the app, users can significantly improve their spelling skills. Although FCJ Spelling is suitable for anybody wishing to improve their reading and writing skills, the app is specially tailored to students and teachers, allowing students to submit their work on the app to their teachers at the end of each week. Instructions for Use: Students: Students complete the 10 exercises each week. At the end of each week, the student submits their results to their teachers.Students can choose to have a transparent colour overlay while playing the exercises. Teachers: To view a student’s results simply tap Search for Results and enter the student’s username. Their name and username will then be saved to your device for future use. Once all your students have been added. You can press one button to gather all of your students' results in a table.
Let's Build Sentences
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Let’s Build Sentences helps children learn to write real sentences with calm, guided handwriting practice designed for early learners. Choose from available natural-sounding system voices in Parent Settings to find a narrator that suits your child. Children hear letters, build words, trace shapes, and practise writing complete sentences one letter at a time using large child-friendly writing boxes and supportive feedback. Designed for home learning, phonics support, and early confidence-building, the app keeps sentence practice simple, structured, and encouraging. Whether your child is beginning to recognise letter sounds or starting to write full sentences independently, Let’s Build Sentences creates a positive daily writing routine without pressure or overwhelm. FEATURES • Guided sentence handwriting practice • Child-friendly sentence layout with large writing boxes • Helpful feedback that highlights letters needing another try • Trace letters mode for extra support • Tap letters to hear sounds while learning • Parent-led sentence creation • One-tap child-friendly sentence generation • Type mode and handwriting mode • Parent voice recordings for familiar learning support • Learning settings for spacing, capitals, and speech style • iCloud sync across devices (update every device for the latest sync improvements) • Daily goals, streaks and earned mastery stars • A grown-up check for settings and purchases • Reduce Motion support for onboarding and help • Calm encouragement and celebration after success FREE VERSION The free version includes starter sentence packs, handwriting practice, the built-in narrator, and one saved custom sentence. PREMIUM UNLOCK Unlock all sentence packs, unlimited saved custom sentences, parent voice recordings, badges and richer learning tools with a simple one-time purchase. WHY PARENTS LOVE IT • Makes sentence practice feel achievable • Supports phonics-based early learning • Builds confidence through repetition and guidance • Helps children practise independently • Creates a calm and encouraging writing routine • Flexible for different learning stages and abilities No subscriptions. No distracting ads. Just focused sentence practice designed for young learners.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | FCJ Spelling | Let's Build Sentences |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Every 4 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 41 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Niall Kehoe | Brian Leary |
In-app purchases
FCJ Spelling
No in-app purchases
Let's Build Sentences
- Premium Unlock$4.99
Questions
Is FCJ Spelling free?
Is Let's Build Sentences free?
Do FCJ Spelling or Let's Build Sentences have ads?
Which is updated more often, FCJ Spelling or Let's Build Sentences?
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