# Multiple Calculators vs Lockstar Smart

The clearest difference is price: Lockstar Smart at Free against Multiple Calculators's $0.99. Lockstar Smart also leads on update cadence (every 19 months vs every 38 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Lockstar Smart is free to download; Multiple Calculators costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Multiple Calculators ships an update every 38 months, Lockstar Smart every 19 months. The most recent releases landed on September 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Multiple Calculators | Lockstar Smart |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.9 (16 ratings)](https://appshunter.io/ios/app/lockstar-smart/id1623789549/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 77.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 19 months** |
| Monetization | — | Free |
| Size | 0 MB | 394 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zelda, Inc.](https://appshunter.io/developer/381675078) | [Lockstar Group Ltd](https://appshunter.io/developer/1623789551) |

## What reviewers say

### Multiple Calculators

[App page](https://appshunter.io/ios/app/multiple-calculators/id390612808)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Lockstar Smart

[App page](https://appshunter.io/ios/app/lockstar-smart/id1623789549)

Control your smart lock using your smartphone. This application allows you to unlock your door remotely, offering a convenient way to manage access. It provides a simple interface for managing your smart lock.

**Highlights:** Unlock doors with smartphone, Remote access management, Simple user interface, Smart lock integration

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Multiple Calculators free?

Multiple Calculators costs $0.99, with no in-app purchases.

### Is Lockstar Smart free?

Lockstar Smart is free to download, with no in-app purchases.

### Do Multiple Calculators or Lockstar Smart have ads?

Neither Multiple Calculators nor Lockstar Smart shows ads.

### Which is updated more often, Multiple Calculators or Lockstar Smart?

Multiple Calculators ships an update every 38 months, and Lockstar Smart every 19 months. Most recently, Multiple Calculators was updated on September 8, 2026 and Lockstar Smart on October 1, 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.*