kong calculator vs Calculator with reverse screen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
kong calculator
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It is a simple calculator that provides a calculation history function.
Calculator with reverse screen
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Calculator with a screen that can be displayed upside down to make it easier to read face-to-face
Screenshots
Verdict
The clearest difference is update cadence: kong calculator at every 4 days against Calculator with reverse screen's fortnightly. 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. Neither carries in-app purchases, so what you see is what you pay.
kong calculator ships an update every 4 days, Calculator with reverse screen fortnightly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | kong calculator | Calculator with reverse screen |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Fortnightly |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 20 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Changyeol Seo | Hideaki Uchikoshi |
In-app purchases
kong calculator
No in-app purchases
Calculator with reverse screen
No in-app purchases
Questions
Is kong calculator free?
Is Calculator with reverse screen free?
Do kong calculator or Calculator with reverse screen have ads?
Which is updated more often, kong calculator or Calculator with reverse screen?
Other comparisons
