# Lockin Smart vs My Unit Converters

The clearest difference is rating: My Unit Converters at 5.0 against Lockin Smart's 3.2. My Unit Converters also leads on update cadence (every 2 days vs every 3 weeks). Lockin Smart's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. My Unit Converters sells 1 one-off in-app purchase. Lockin Smart asks for nothing beyond the download.

My Unit Converters holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: Lockin Smart has 29 ratings behind it against 1, so its average is the more settled of the two.

Lockin Smart ships an update every 3 weeks, My Unit Converters every 2 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Lockin Smart | My Unit Converters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (29 ratings)](https://appshunter.io/ios/app/lockin-smart/id6739702442/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/my-unit-converters/id6801422287/reviews)** |
| Number of ratings | **29** | 1 |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 286 MB | 7 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LOCKIN (U.S.) INC.](https://appshunter.io/developer/1502077789) | [Marvin Suo](https://appshunter.io/developer/380228698) |

## What reviewers say

### Lockin Smart

[App page](https://appshunter.io/ios/app/lockin-smart/id6739702442)

This app simplifies keyless living by allowing you to unlock your door using various biometric methods or passcodes. Remotely manage access, see visitors, and receive important alerts, all while integrating with your smart home ecosystem.

**Highlights:** Keyless entry via face, fingerprint, palm vein, passcode, or phone, Remote lock/unlock and visitor management, Two-way voice intercom, Real-time alerts for events, Smart home integration (Matter, Alexa, Google Home), On-device biometric data storage

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

**In-app purchases:** none


### My Unit Converters

[App page](https://appshunter.io/ios/app/my-unit-converters/id6801422287)

Instantly convert units and currencies for daily tasks, travel, and work. Supports numerous categories, custom units, and live exchange rates. Features a built-in calculator and customizable display options.

**Highlights:** Unit and currency conversion, Live currency exchange rates, Built-in calculator, Custom units, Recent and pinned conversions, Light/Dark/System themes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Lockin Smart free?

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

### Is My Unit Converters free?

My Unit Converters is free to download, with in-app purchases available.

### Which has better reviews, Lockin Smart or My Unit Converters?

My Unit Converters is rated higher. Lockin Smart averages 3.2 out of 5 from 29 ratings, while My Unit Converters averages 5.0 from 1 ratings.

### Do Lockin Smart or My Unit Converters have ads?

My Unit Converters shows ads; Lockin Smart does not.

### Which is updated more often, Lockin Smart or My Unit Converters?

Lockin Smart ships an update every 3 weeks, and My Unit Converters every 2 days. Most recently, Lockin Smart was updated on November 8, 2026 and My Unit Converters on October 31, 2026.

---

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