ELSB Lite vs Numbuko
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ELSB Lite
This app provides systematic instruction for print and phonemic awareness, featuring seven levels and ongoing assessments for personalized student progress. Research supports its effectiveness as a literacy program.
- Systematic print and phonemic awareness instruction
- Seven distinct learning levels
- Ongoing student assessments
- Personalized progress tracking
- Research-backed effectiveness
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The Early Literacy Skills Builder app incorporates systematic instruction to teach both print and phonemic awareness. ELSB is a multi-year program with seven distinct levels and ongoing assessments so students progress at their own pace. Note: This free version comes with level 1 - Lesson 1 and Level 5 - lesson 1. Full levels can be purchased from the in-app store. Five years of solid research have been completed through the University of North Carolina at Charlotte, proving ELSB to be a highly effective literacy program and more effective than a sight-word only program. ELSB is based upon the principles of systematic and direct instruction. It incorporates scripted lessons, least-prompt strategies, teachable objectives, built-in lesson repetition, and ongoing assessments. The seven ELSB levels contain five structured lessons each. All students begin at Level 1. Instruction is one-on-one or in small groups. Teach scripted lessons daily in two 30-minute sessions. On the completion of each level, formal assessments are given. ELSB includes everything you need to implement a multi-year literacy curriculum.
Numbuko
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Numbuko is a colourful and creative way for children to explore number patterns. Informed by research at the University of Edinburgh, UK, Numbuko squares are like many colour rods used in mathematics, but can magically change colour according to the number attached, giving children interactive feedback. Unlike ‘drill and practice’ apps, Numbuko lets children explore number relationships, such as addition, subtraction, fractions, odd and even, and tens and units. Features • Explore fundamental maths concepts for numbers 1-99 • Build and share creative patterns • Add/Remove colour - Encourage predictions • Add/Remove division lines between squares - Encourage/Discourage counting • Save configurations • Find out about the background research Numbuko aims for children to freely explore independently and learn through talk with an adult
Verdict
The clearest difference is in-app purchases: Numbuko at none against ELSB Lite's 7. ELSB Lite's advantage is update cadence (every 2 months vs every 108 months) and iOS requirement (13.0 vs 17.6).
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
ELSB Lite ships an update every 2 months, Numbuko every 108 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.
| Parameter | ELSB Lite | Numbuko |
|---|---|---|
| Price | Free — better | — |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months — better | Every 108 months |
| Ads | No | — |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPad — better | — |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 236 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Attainment Company | Andrew Manches |
In-app purchases
ELSB Lite
- Level 1$21.99
- Level 2$21.99
- Level 3$21.99
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- Level 4$21.99
- Level 5$21.99
- Level 6$21.99
- Level 7$21.99
Numbuko
No in-app purchases









