SpellSmart vs Number Ninja Jr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpellSmart
Practice spelling with interactive modes, including solo and buddy challenges. Upload your own words or use the provided lists to prepare for spelling bees and improve vocabulary. Designed to help students, especially those facing language challenges, build confidence.
- Interactive spelling practice
- Solo and Buddy modes
- Upload custom word lists
- Bookmark words for review
- Pronunciation audio
- Progress tracking
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SpellSmart allows students to practice spelling in a fun, interactive way! If you're preparing for a spelling bee, you can upload your own words, or you can practice the ones we have. Solo Mode: In Solo Mode, the app will read you words out loud, you'll type in your spelling, and we'll let you know if you're correct. Buddy Mode: In Buddy Mode, you'll get a friend to hold the phone so that it's facing away from you. The app will read the words aloud, you can spell it out loud, and your buddy can check if you're correct. You can also bookmark any words you want to come back to, and we'll make a list of all your bookmarked words so you can practice them. In 8th grade, I was preparing for the Scripps National Spelling Bee, one of the most prestigious spelling competitions in the US. However, since this was my first year competing, I had one minor issue - how am I supposed to practice? Most of the online guides I read told me that I should practice writing words on paper, but that approach wasn't very effective for me. I quickly realized that I needed someone to practice with me - someone like my mother, who was willing to help me for hours on end if necessary. Unfortunately, as an immigrant who spoke English as a second language, she couldn't correctly pronounce the complex words that even native speakers would struggle with. That's why I created SpellSmart, an effective way for any student to practice their vocabulary and get better at spelling. SpellSmart not only provides a solution to my personal problem but also aims to address a broader social issue. By enabling minority students to practice their vocabulary and spelling skills, the app could become a valuable resource for immigrant families across the country facing similar language challenges. Now, parents and guardians can assist their children in honing their spelling abilities with just a touch of a button, fostering a supportive learning environment at home. SpellSmart's impact resonates beyond individual achievements, promoting a sense of community and understanding among diverse learners.
Number Ninja Jr
This app offers engaging math challenges for children, focusing on addition, subtraction, and multiplication. It allows parents to monitor their child's learning progress and homework status.
- Addition, subtraction, multiplication challenges
- Fun and colorful interface
- Progress tracking for parents
- Homework completion monitoring
- Suitable for young learners
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Number Ninja helps kids build confidence in math through fun, colorful challenges in addition, subtraction, and multiplication — while parents can easily track progress and homework completion.
Screenshots
Verdict
The clearest difference is update cadence: Number Ninja Jr at every 11 days against SpellSmart's every 4 months. SpellSmart's advantage is ratings volume (6 vs 1) and iOS requirement (16.0 vs 18.6). On price, rating, review sentiment and ads 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for SpellSmart against 5.0 for Number Ninja Jr. That said, the two scores are not equally well evidenced: SpellSmart has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
SpellSmart ships an update every 4 months, Number Ninja Jr every 11 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | SpellSmart | Number Ninja Jr |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 4 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 73 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | TheAwesomesome | RAGHAVENDRA HEGDE |
Customer experience
SpellSmart
Number Ninja Jr
In-app purchases
SpellSmart
No in-app purchases
Number Ninja Jr
No in-app purchases
Questions
Is SpellSmart free?
Is Number Ninja Jr free?
Which has better reviews, SpellSmart or Number Ninja Jr?
Do SpellSmart or Number Ninja Jr have ads?
Which is updated more often, SpellSmart or Number Ninja Jr?
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