CalcKX vs Hidden calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalcKX
Read full descriptionHide full description
FREE - NO ADVERTISING An easy to use basic calculator for iPhone and iPad with separate display area for calculations. Special gimmick: have fun while looking for Easter Eggs!
Hidden calc
Read full descriptionHide full description
Calculator that allows to hide input values and calculation results while using the app
Screenshots
Verdict
The clearest difference is ads: CalcKX at none against Hidden calc's shown. CalcKX also leads on update cadence (every 4 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement 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.
CalcKX ships an update every 4 days, Hidden calc every 2 weeks. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.
| Parameter | CalcKX | Hidden calc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 1 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Martin Kowollik | Hideaki Uchikoshi |
In-app purchases
CalcKX
No in-app purchases
Hidden calc
No in-app purchases
