LumoCalculatorVault vs BarLock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LumoCalculatorVault
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[Hide photos no one should see — inside this calculator.] Calc+ looks and works like an ordinary calculator. But enter your secret 4-digit passcode, and a hidden photo album appears. Hand your phone to a friend. Let your partner browse your home screen. No one will ever suspect this app is anything but a calculator. ■ Perfect camouflage The icon, the interface, the functionality — it's a real calculator. Portrait mode for basic math, landscape for a full scientific calculator. Use it every day without raising suspicion. ■ 'Show me' — no problem. Calc+'s killer feature: the Decoy Password. If someone asks you to open the app, just enter your decoy code. An empty fake album opens — with no settings button visible. Your real secrets remain completely hidden. ■ No biometrics — by design. Face ID and Touch ID are convenient, but they can be forced — while you're asleep, or simply by pointing your phone at your face. Calc+ relies only on a 4-digit passcode that exists nowhere but in your mind. No one can force what they can't see. ■ Photos and videos, safely stored Save photos and videos inside the app. Smooth playback, folder organization, pinch-to-zoom grid — it feels just like your regular album. ■ Premium Plan (one-time purchase) Pay once, unlock everything forever. No monthly fees. No recurring charges on your credit card statement. · Unlimited photo & video storage · Decoy password feature Protect your secrets with Calc+ — starting today.
BarLock
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.
- 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
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You don't have a waking-up problem. You have a turning-off-the-alarm problem. BarLock keeps ringing until you get up and scan a barcode across the room. No snooze. No negotiating. Pick an alarm time, scan a barcode or QR code on something that lives away from your bed, and that exact code becomes the only way to stop the alarm. Toothpaste, coffee, medication, a notebook. Anything that forces you to stand up. HOW IT WORKS 1. Create an alarm. 2. Scan a barcode or QR code on an item away from bed. 3. Name the item. 4. When the alarm fires, walk to the item and scan it. 5. Wrong item, wrong code, or no scan? The alarm keeps ringing. WHY IT WORKS Most alarms die from one tap while you are still half asleep. BarLock moves the off switch across the room. By the time you have scanned, you are on your feet, and getting on your feet is the whole battle. BUILT FOR • Heavy sleepers • Students with early classes • Shift workers • Serial snoozers • Anyone who turns off alarms without remembering it WHAT YOU GET • An alarm only your chosen barcode or QR code can stop • A full-screen Scan to Stop screen the moment it rings • Wake-Up Check. BarLock rings again a little later to make sure you stayed up. • Backup Alerts. Opened the alarm but never finished the scan? It comes back. • Lock Window. In the minutes before it rings, the alarm can't be edited, paused, or deleted without a scan. 2 a.m. you can't sabotage 7 a.m. you. • Tiptoe Mode. A few quiet seconds after you press Stop, enough to reach your item without waking the house. Miss the scan and the volume comes back. • Stickers. Keep getting up and you'll earn them, in holographic foil. • Alarm sounds built to cut through deep sleep • Everything stays on your phone. No account, no ads, no tracking. WHAT'S INCLUDED One barcode alarm, one sound, and the standard wake-up rules. Enough to fix tomorrow morning. BARLOCK PRO Pro is a one-time purchase. No subscription. • Unlimited alarms for weekdays, naps, travel, and backups • Tiptoe Mode • Your own settings for Lock Window, Backup Alerts, and Wake-Up Check • Your sticker collection, revealed in full holographic color • Every alarm sound in the app PRIVACY Your alarms and scanned codes never leave your device. No account, no advertising, no tracking. Stop snoozing. Scan to stop.
Screenshots
Verdict
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.
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. 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.
| Parameter | LumoCalculatorVault | BarLock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (8 ratings) — better |
| Positive reviews | — | 33.3% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 — better | 26.1 |
| Further details — not scored | ||
| Size | 2 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Nichful | CODE IN MOTION SRL |
In-app purchases
LumoCalculatorVault
- Premium$3.99
BarLock
- BarLock PRO Lifetime$9.99
Questions
Is LumoCalculatorVault free?
Is BarLock free?
Do LumoCalculatorVault or BarLock have ads?
Which is updated more often, LumoCalculatorVault or BarLock?
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