Math Orbs vs Sentopoly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Math Orbs
This app offers Grade 1-6 algebra practice for children, allowing parents to track progress and identify areas of difficulty. It features interactive quests, collectible orbs, and a virtual scratchpad for calculations, making learning engaging and eliminating the need for workbooks.
- Grade 1-6 algebra practice
- Parental progress tracking
- Identify areas of struggle
- Interactive quests
- Collectible orbs
- Virtual scratchpad
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Math Orbs is a math app that lets parents track their children's progress through Grade 1—6 algebra as they practice what they've learned. - Say goodbye to grading your child’s answers in workbooks! - Grades 1—6 algebra: never buy that “next grade” workbook again! - Scribbles for incorrect answers are recorded, helping you identify where and why they are struggling. - Track their overall progress and performance with statistics such as overall percentage score, time taken per quest, and time spent per question. Your kids will: - Practice Grade 1–6 arithmetic that becomes progressively more challenging, including addition, subtraction, multiplication, division, decimals, and fractions. - Unlock beautiful orbs every time they pass a quest. Try to collect them all! - Use the built-in virtual scribble pad for calculations—no paper or pencil needed! - No longer able to peek at the answers from the back of workbooks! Download Math Orbs today and help your kids become math wizards!
Sentopoly
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Sentopoly: learn a language from the sentences you actually need. SEVENTEEN LANGUAGES Learn Arabic, Chinese (Simplified), Chinese (Traditional, Taiwan), Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Turkish or Vietnamese, starting from any of the others. Choose the language you speak and the one you want, and change pairs whenever you like. TYPE OR SAY A SENTENCE In your language or the one you are learning. Sentopoly translates it the way a native speaker would say it and breaks it into words: meaning, part of speech, pronunciation and a note on usage. Chinese comes with Zhuyin or pinyin, Japanese with furigana and romaji, Korean, Russian, Arabic and Hindi with romanisation, and the European languages with IPA. HEAR IT PROPERLY Every sentence and every word is read in a natural native voice, in all 17 languages. Listen mode plays your sentences one after another, with the screen off if you like, with shuffle and a pause after each one so you can repeat it. SAY IT, GET SCORED Shadow mode plays the sentence, records you repeating it, and scores your pronunciation word by word. Words you got wrong turn red; tap one to hear it again. Scoring covers 15 of the 17 languages; for Indonesian and Turkish you can still record yourself and compare. REMEMBER IT Sentences and words go into a five-stage spaced-repetition schedule. A few minutes a day keeps everything you have learned alive. A daily goal and a streak keep you honest, a day with nothing due never breaks your streak, and Hard ones drills the cards you keep missing. START WITH A TOOLKIT Learning Taiwan Mandarin? A built-in starter pack gives you 250 everyday sentences in ten units: asking questions, people and things, numbers and money, time, dates, measurements, directions, past and future, can / want / need, feelings. Starter packs for the other languages, each adapted to the country where the language is spoken, arrive in the next update. YOUR LIBRARY Tag sentences, search them, filter yours from the course. The app's own interface is in English or Traditional Chinese. PRIVATE BY DESIGN No account. Your sentences live on your phone and in your own iCloud backup. No ads, no tracking. SENTOPOLY PRO Try everything free for 7 days. Pro unlocks unlimited new sentences, voices and pronunciation scoring: US$4.99 a month or US$29.99 a year. Cancel any time; everything you saved stays yours. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sentopoly-proxy.khazaril-1df.workers.dev/privacy
Screenshots
Verdict
The clearest difference is price: Sentopoly at Free against Math Orbs's $0.99. Sentopoly also leads on update cadence (every 3 days vs weekly). Math Orbs's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 16.4). On ads 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
Sentopoly is free to download; Math Orbs costs $0.99 up front. Sentopoly sells 2 in-app purchases, starting at $4.99 per month. Math Orbs asks for nothing beyond the download.
Math Orbs ships an update weekly, Sentopoly every 3 days. The most recent releases landed on November 4, 2026 and November 6, 2026 respectively.
| Parameter | Math Orbs | Sentopoly |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 72 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | Knowledge Vortex, LLC | Ian Jukes |
In-app purchases
Math Orbs
No in-app purchases
Sentopoly
- Sentopoly Pro, monthly7 Days trial$4.991 Month
- Sentopoly Pro, yearly7 Days trial$29.991 Year









