Add & Subtract vs Happy Learn 香港
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Add & Subtract
This app helps young children develop an interest in mathematics through interactive games. It uses visual aids and engaging scenes to teach basic addition and subtraction concepts, reinforcing learning with positive feedback.
- Interactive learning scenes
- Visual representation of numbers
- Addition and subtraction practice
- Positive reinforcement for correct answers
- Engaging animal characters
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XiaoPack · Little Bag, Big Discoveries. Discover addition and subtraction with playful animal friends! Fish, butterflies, chicks and ducks arrive and leave one at a time, helping children see what each equation means. Questions unfold automatically: children simply tap one of four picture-number answers. A correct answer brings a celebration and the next question. • Random addition and subtraction with operands up to 10; addition results can reach 20. • Four hand-painted worlds, animated animals and cartoon number pictures. • Landscape play on iPhone and iPad. • Ten languages: English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, Italian, Portuguese, Spanish and Indonesian. The app uses your iOS app language preference, with English as the fallback. • Offline play, no advertising and no app account required. The fish world is free. One optional, permanent in-app purchase unlocks the other three worlds together. Purchase and restore actions are protected by a four-choice maths question for parents. The price is displayed in your local App Store currency.
Happy Learn 香港
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"Practice makes perfect" For kids who speak Cantonese, this app will help your child practice what they have learnt from learning classes. It has three categories: - Mathematics - English - Cantonese For Mathematics, it will have basic addition and subtraction. Practice questions can be printed out so they can practice with a pencil. Each question will have a voice output so that they can listen to the question as well. For English, you can trace English letters, name objects, and recognise words. It uses speech recognition, so that it will be fun. For Cantonese, you can recognise characters and objects. There is a parents section where you can see how many questions are answered correctly. For each correct answer, there is a point added. Your child can use these points as a reward. For example, they can redeem as YouTube minutes or to eat some candy. There is a section for the parent to record encouraging messages when they answer correctly or incorrectly. This will give extra motivation for them to practice more.
Screenshots
Verdict
The clearest difference is in-app purchases: Happy Learn 香港 at none against Add & Subtract's 1. Happy Learn 香港 also leads on update cadence (monthly vs every 44 months) and iOS requirement (15.6 vs 17.0). On price, 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
Both are free to download. Add & Subtract sells 1 one-off in-app purchase. Happy Learn 香港 asks for nothing beyond the download.
Add & Subtract ships an update every 44 months, Happy Learn 香港 monthly. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.
| Parameter | Add & Subtract | Happy Learn 香港 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 44 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 55 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | 丽东 陈 | Johnny Tam |
In-app purchases
Add & Subtract
- All Three Worlds$1.99
Happy Learn 香港
No in-app purchases
Questions
Is Add & Subtract free?
Is Happy Learn 香港 free?
Do Add & Subtract or Happy Learn 香港 have ads?
Which is updated more often, Add & Subtract or Happy Learn 香港?
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