# LumoCalculatorVault vs BarLock

The clearest difference is update cadence: BarLock at every 4 days against LumoCalculatorVault's monthly. LumoCalculatorVault's advantage is iOS requirement (18.6 vs 26.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. LumoCalculatorVault sells 1 one-off in-app purchase and BarLock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

LumoCalculatorVault ships an update monthly, BarLock every 4 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | LumoCalculatorVault | BarLock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (8 ratings)](https://appshunter.io/ios/app/barlock-barcode-alarm/id6772532044/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 35 MB |
| Requires iOS | **18.6** | 26.1 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nichful](https://appshunter.io/developer/1871193294) | [CODE IN MOTION SRL](https://appshunter.io/developer/1896060625) |

## What reviewers say

### LumoCalculatorVault

[App page](https://appshunter.io/ios/app/lumocalculatorvault/id6758154308)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | one-time |


### BarLock

[App page](https://appshunter.io/ios/app/barlock-barcode-alarm/id6772532044)

This alarm clock requires users to scan a unique barcode or QR code located away from their bed to turn it off. It's designed to prevent snoozing and ensure users get out of bed. Features include backup alerts and a lock window to prevent early cancellation.

**Highlights:** Scan barcode/QR code to stop alarm, No snooze functionality, Wake-Up Check feature, Backup alerts, Lock Window to prevent early cancellation, Tiptoe Mode for quiet disarming

**Features:** iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BarLock PRO Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is LumoCalculatorVault free?

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

### Is BarLock free?

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

### Do LumoCalculatorVault or BarLock have ads?

Neither LumoCalculatorVault nor BarLock shows ads.

### Which is updated more often, LumoCalculatorVault or BarLock?

LumoCalculatorVault ships an update monthly, and BarLock every 4 days. Most recently, LumoCalculatorVault was updated on November 5, 2026 and BarLock on November 5, 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.*