CalcKX vs Smart Calc+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalcKX
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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!
Smart Calc+
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Your ultimate tool for basic algebra, trigonometry (sin, cos), logarithms (log), and more. Perform quick and accurate calculations with a built-in history log to keep track of all your calculations.
Screenshots
Verdict
CalcKX and Smart Calc+ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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, Smart Calc+ every 3 days. The most recent releases landed on October 17, 2026 and September 29, 2026 respectively.
| Parameter | CalcKX | Smart Calc+ |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 | 13.4 — better |
| Further details — not scored | ||
| Size | 1 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Martin Kowollik | Rahman Usta |
In-app purchases
CalcKX
No in-app purchases
Smart Calc+
No in-app purchases
