2581=? vs Calculator Quest
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
2581=?
A simple puzzle game where players select the correct answer by tapping. It challenges users to think differently and rely on intuition rather than logic.
- Intuitive tap-based gameplay
- Pattern recognition challenges
- Minimalist design
- Quick play sessions
Read full descriptionHide full description
0000=4 1111=0 2222=0 3333=0 4444=4 5555=0 6666=4 7777=0 8888=8 9999=4 Don't think, feel! Select by tap the answer.
Calculator Quest
This app merges a functional calculator with role-playing game elements. It offers a "Calc mode" for standard calculations, a fast-typing number game, and a mental arithmetic challenge.
- Standard calculator functionality
- Fast-typing number game
- Mental arithmetic time attack
- RPG elements
Read full descriptionHide full description
A calculator and an RPG combine to form a miraculous hybrid! Includes bonus quick-typing game and math game! ※Rest assured, this app also works as a calculator. - Use for regular calculator operations! Calc mode! - Type the numbers and symbols as fast as you can! Quickdraw Colosseum! - Try your hand at the “mental arithmetic” time attack mode in Mental Math Kingdom!
Screenshots
Verdict
The clearest difference is review sentiment: Calculator Quest at 72% against 2581=?'s 22%. Calculator Quest also leads on rating (4.1 vs 2.3) and update cadence (every 4 months vs every 9 months). 2581=?'s advantage is ads (none vs shown) and iOS requirement (7.0 vs 13.0). On price, ratings volume, in-app purchases and monetization model 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.
Calculator Quest holds the better App Store score, 4.1 against 2.3. Both are backed by a comparable volume of ratings — 7 and 14 respectively. Written reviews point the same way: 22% of 2581=?'s written reviews are positive against 72% of Calculator Quest's.
2581=? ships an update every 9 months, Calculator Quest every 4 months. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.
| Parameter | 2581=? | Calculator Quest |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (7 ratings) | 4.1 (14 ratings) — better |
| Positive reviews | 22.2% of reviews | 72.3% of reviews — better |
| Number of ratings | 7 | 14 — better |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 6 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | RUCKYGAMES CO., LTD. | Masakazu Yonehara |
Customer experience
2581=?
Calculator Quest
Bugs and requests
2581=?
Not enough reviews yet to summarise bugs or requests.
Calculator Quest
Reported bugs
4 issues- App crashes immediately after killing monsters
- Ads showing up on the top blocking off numbers
- App needs to be updated for iOS 11
- Can't use on new iPhone
Requested features
13 requests- Pay to remove ads option
- Offline play option
- More games to play
- Increase calculation level
- Add different calculation types (add, subtract, multiply, divide)
Show 8 moreShow fewer
- Add maps and companions for RPG elements
- Make game the main focus, not calculator
- Add hidden command games
- More gameplay features
- Enhance calculation function
- Make questions harder with progression
- Add items like skipping problems
- Update for newer iOS versions
In-app purchases
2581=?
No in-app purchases
Calculator Quest
No in-app purchases
Questions
Is 2581=? free?
Is Calculator Quest free?
Which has better reviews, 2581=? or Calculator Quest?
Do 2581=? or Calculator Quest have ads?
Which is updated more often, 2581=? or Calculator Quest?
Other comparisons
