HK P.4 Math vs GrammarEasy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HK P.4 Math
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本程式目的是設計於給我女兒和香港小學生四年級 或 任何國家適用的兒童作數學練習用途、適合年齡於在香港大約九歲或以上。 本程式提供於兩種數學練習類型(包括HK P2 Math - 加數和減數)。 1 : 三個位數字的連續兩次除數計算練習或連續三次除數計算練習、答案可以有商數和餘數。 例子:800 ÷ 4 ÷ 122 2 : 四組的每組兩個位數字之四則混合計算練習(包括加、減、乘和除混算),問題類型總共有八款、各有不同,當中也有包含()括弧內之算式需要先行計算,最後,為方便現時程度計算、答案只有整數。 例子: 68 +88 x 30 - 51 (57 - 37 ) x 43 77 x (80 - 65) (40 + 20 ) x 67 - 94 72 + 14 x (88 - 55) (46 - 20) x (69 - 37) (81 + 71 - 55) x 49 39 x (97 - 14 ÷ 2) 在草稿區內可以自由用上彩色筆列出試算以方便計算答案。 本程式提供中文和英文的使用界面。 程式之限制 - 現只支援 iOS 系統9.0或以上和垂直畫面。 這是1.0初版版本,而未來會跟據學習進度來被更新追加更多功能和改善。 如有任何查詢或建議, 歡迎請電郵至: apple.development@outlook.com 祝使用愉快。 備註: 本程式是沒有任何分析、廣告、數據分享、使用者資料收集、裝置資料收集, 只純粹為香港小學兒童作簡單數學練習而設. --------------------------------------------------------------- The objective of this app is designed for my daughter and students they are from age 9 years old(Hong Kong) or above in Hong Kong Level 4 of Primary School and any student who suitable use this mathematics exercise in any country. This app provide two types of mathematics exercises(including the HK P2 Math - addition and subtraction). 1: Three digits Division exercises with quotient and reminder in two or three times. example : 800 ÷ 4 ÷ 122 2: Four combinations of Two digits - Four rules mixed operations exercises(include mixing with addition, subtraction, multiplication and division) with integer values, the total question type have 8 different sets. example: 68 +88 x 30 - 51 (57 - 37 ) x 43 77 x (80 - 65) (40 + 20 ) x 67 - 94 72 + 14 x (88 - 55) (46 - 20) x (69 - 37) (81 + 71 - 55) x 49 39 x (97 - 14 ÷ 2) Please write your vertical format with colour pencil at rough area section. This app has Chinese and English interfaces that can provide to Chinese students and International students. The restriction of this app - this app only support iOS 9.0 or above and portrait orientation. This 1.0 is a first version and it will be improved/enhanced for more features according to the studies level in future. If any enquiry/suggestion, please send email to: apple.development@outlook.com Enjoy. Remark : This app doesn't contain ANY analytics, advertising, data sharing, user's data collecting and device's data collecting; this app is just a simple mathematics exercise for H.K. Level 4 of Primary School. =============================================== All rights reserved by HK P.4 Math developer.
GrammarEasy
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Can't always check your child's English essays — or not confident enough to spot every mistake? GrammarEasy gives your child instant, accurate feedback on every essay, so you don't have to. Designed for primary school students aged 8–16, GrammarEasy checks grammar, spelling, punctuation, and vocabulary in seconds. Every mistake comes with a clear, plain-language explanation your child can actually understand — not just a red mark. —————————————— HOW IT HELPS YOUR CHILD —————————————— Instant Grammar Check (Free) Checks grammar, spelling, punctuation, and vocabulary the moment you tap. Works offline — no internet needed. AI Deep Check (Premium) Our AI goes deeper than standard checking — it catches tense inconsistencies, awkward phrasing, and vocabulary choices that rule-based tools miss. Explanations are in plain language, so your child understands what to fix and why. Up to 20 checks per week, included with Premium. Essay History (Premium) Every checked essay is saved. Review past results anytime to see what errors were flagged and how writing has improved. Progress Insights See your child's error breakdown by type — grammar, spelling, punctuation, vocabulary — and spot recurring mistakes before the next exam. —————————————— PERFECT FOR PARENTS WHO —————————————— - Aren't confident checking English essays themselves - Want their child to get feedback beyond just "wrong" - Are looking for an affordable alternative to English tutors - Want to track whether their child's writing is actually improving —————————————— AI EXPLANATIONS IN CHINESE —————————————— Set your device language to Traditional or Simplified Chinese and AI Deep Check explanations are automatically written in Chinese — so your child understands the feedback even better. Payment is charged to your Apple ID at confirmation of purchase. Subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in App Store account settings. Privacy Policy: https://grammareasy.app/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: GrammarEasy at monthly against HK P.4 Math's every 9 months. HK P.4 Math's advantage is iOS requirement (9.0 vs 17.0). On price, ads, in-app purchases 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. HK P.4 Math sells 1 one-off in-app purchase and GrammarEasy sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
HK P.4 Math ships an update every 9 months, GrammarEasy monthly. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.
| Parameter | HK P.4 Math | GrammarEasy |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Yik Lam Leung | Yu Ngon Ng |
In-app purchases
HK P.4 Math
- HK P.4 Math(Full Version)$0.99
GrammarEasy
- Premium (Weekly)$0.997 Days
- Premium(6 Months )$17.996 Months
- Premium(Annual)$29.991 Year
Questions
Is HK P.4 Math free?
Is GrammarEasy free?
Do HK P.4 Math or GrammarEasy have ads?
Which is updated more often, HK P.4 Math or GrammarEasy?
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