# smart LK vs XCalc Calculator

The clearest difference is in-app purchases: smart LK at none against XCalc Calculator's 3. smart LK also leads on ads (none vs shown) and rating (5.0 vs 4.8). XCalc Calculator's advantage is ratings volume (5 vs 1). On price, update cadence and device support there is nothing between them.

Both are free to download. XCalc Calculator sells 3 one-off in-app purchases. smart LK asks for nothing beyond the download.

smart LK holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: XCalc Calculator has 5 ratings behind it against 1, so its average is the more settled of the two.

smart LK ships an update monthly, XCalc Calculator fortnightly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | smart LK | XCalc Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-lk/id1492795311/reviews)** | [4.8 (5 ratings)](https://appshunter.io/ios/app/xcalc-calculator/id1664639923/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 78.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 69 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [libing yang](https://appshunter.io/developer/1435297539) | [秀丽 周](https://appshunter.io/developer/1664323229) |

## What reviewers say

### smart LK

[App page](https://appshunter.io/ios/app/smart-lk/id1492795311)

Control your smart lock remotely with this app. It supports unlocking via password and offers security alerts for brute-force attempts on fingerprint locks, ensuring property safety.

**Highlights:** Remote unlocking, Password lock support, Brute force crack alerts, Property safety notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### XCalc Calculator

[App page](https://appshunter.io/ios/app/xcalc-calculator/id1664639923)

An efficient and minimalist calculator app offering essential arithmetic functions, including parentheses and percentages. It features a clean interface, customizable themes, and a history log for easy access to past calculations. The app is designed for quick startup and convenient operation.

**Highlights:** Addition, subtraction, multiplication, division, Parentheses and percentage support, Thousands separator display, Adjustable decimal places, Calculation history log, Black and white themed skins

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| permanent member | $3.99 | one-time |
| VIP Activity | $6.99 | one-time |
| VIP | $9.99 | one-time |


## Frequently asked questions

### Is smart LK free?

smart LK is free to download, with no in-app purchases.

### Is XCalc Calculator free?

XCalc Calculator is free to download, with in-app purchases available.

### Which has better reviews, smart LK or XCalc Calculator?

smart LK is rated higher. smart LK averages 5.0 out of 5 from 1 ratings, while XCalc Calculator averages 4.8 from 5 ratings.

### Do smart LK or XCalc Calculator have ads?

XCalc Calculator shows ads; smart LK does not.

### Which is updated more often, smart LK or XCalc Calculator?

smart LK ships an update monthly, and XCalc Calculator fortnightly. Most recently, smart LK was updated on November 3, 2026 and XCalc Calculator on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*