Simple Add Subtract vs Hello Kitty
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Simple Add Subtract
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This is a brain exercise game that does only simple adding and subtracting with maximum 2 digits. A result and 36 numbers are given. Find the numbers that add up equal to the given result. there are 18 sets or combinations for "add 2 numbers", 12 for "add 3 numbers", 9 for "add 4 numbers" and 6 for "add 6 numbers". In a relax mood, use adding and subtracting to find the right set or combination. This will keep human brain in light function with calculation and get aways from any other things. The "Live Result" and the "Display Hint" button are off at default. They can be turned on at the setting scene if it is needed. The letter and background colour of the 36 number boxes can be changed at the setting scene.
Hello Kitty
Help adorable kittens get ready for bed by engaging in fun activities like sorting photos and drawing. This mini-game makes bedtime routines enjoyable for children, turning preparation for sleep into a playful experience.
- Help kittens fall asleep
- Sorting photos
- Drawing activities
- Bedtime stories
- Educational mini-games
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Welcome to a new exciting game! Cats can’t fall asleep without your help. Cute kittens like to help their mother, but there is no time to play after cleaning. Because house cleaning takes a lot of time! To make this process interesting, friends watch cartoons and tell different stories. But Hello Kitty and her friends are not just telling bedtime stories. A player can try sorting photos or drawing here. Help cats to prepare for sleeping! Hello Kitty with friends are ready to see wonderful dreams! Our educational games are available in market absolutely for free! Please read our Privacy policy: https://policy.psvgamestudio.com/privacy_policy_appstore_clear_invest.html and Terms of use: https://policy.psvgamestudio.com/terms_of_use_appstore_clear_invest.html
Screenshots
Verdict
The clearest difference is in-app purchases: Simple Add Subtract at none against Hello Kitty's 5. Hello Kitty's advantage is update cadence (every 2 months vs every 42 months) and iOS requirement (15.0 vs 18.6). 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. Hello Kitty sells 5 in-app purchases, starting at $1.99 per 7 days. Simple Add Subtract asks for nothing beyond the download.
Simple Add Subtract ships an update every 42 months, Hello Kitty every 2 months. Both last shipped on November 3, 2026.
| Parameter | Simple Add Subtract | Hello Kitty |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (643 ratings) — better |
| Positive reviews | — | 77.5% of reviews |
| Number of ratings | — | 643 — better |
| Update frequency | Every 42 months | Every 2 months — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 232 MB |
| Age rating | 4+ | 4+ |
| Developer | Hong Yu | Oculist |
Bugs and requests
Simple Add Subtract
Not enough reviews yet to summarise bugs or requests.
Hello Kitty
Reported bugs
2 issues- Game freezes or crashes on certain devices
- Saved progress not loading properly
Requested features
3 requests- Add more playable characters and customization options
- Introduce more diverse gameplay activities
- Reduce the number of advertisements or make them less intrusive
In-app purchases
Simple Add Subtract
No in-app purchases
Hello Kitty
- Weekly subscription$1.997 Days
- Monthly subscription$3.991 Month
- Annual subscription$7.991 Year
- No ads$1.99
- Full version + no ads$9.99
Questions
Is Simple Add Subtract free?
Is Hello Kitty free?
Do Simple Add Subtract or Hello Kitty have ads?
Which is updated more often, Simple Add Subtract or Hello Kitty?
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