# Google Smart Lock vs Calculator Lock

The clearest difference is review sentiment: Calculator Lock at 76% against Google Smart Lock's 9%. Calculator Lock also leads on rating (4.6 vs 2.5) and update cadence (every 2 weeks vs every 2 months). Google Smart Lock's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price, monetization model and device support there is nothing between them.

Both are free to download. Calculator Lock sells 7 in-app purchases, starting at $1.99 per 7 days. Google Smart Lock asks for nothing beyond the download.

Calculator Lock holds the better App Store score, 4.6 against 2.5. That said, the two scores are not equally well evidenced: Calculator Lock has 6.1K ratings behind it against 614, so its average is the more settled of the two. Written reviews point the same way: 9% of Google Smart Lock's written reviews are positive against 76% of Calculator Lock's.

Google Smart Lock ships an update every 2 months, Calculator Lock every 2 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Google Smart Lock | Calculator Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (614 ratings)](https://appshunter.io/ios/app/google-smart-lock/id1152066360/reviews) | **[4.6 (6.1K ratings)](https://appshunter.io/ios/app/calculator-lock-secure-vault/id6446200267/reviews)** |
| Number of ratings | 614 | **6.1K** |
| Positive reviews | 9.4% of reviews | **75.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#126** | — |
| Size | 56 MB | 80 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Google](https://appshunter.io/developer/281956209) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## What reviewers say

### Google Smart Lock

[App page](https://appshunter.io/ios/app/google-smart-lock/id1152066360)

**Currently charting:** #126 Top Free · Utilities (US App Store)

Securely log in to websites and apps using your phone's built-in security key or a physical Bluetooth key. It simplifies access by remembering your passwords and offering a more convenient sign-in experience.

**Highlights:** Use phone as security key, Use Bluetooth security key, Password saving, Simplified sign-in, Secure access

**In-app purchases:** none

**What reviewers like**

- 🚀 Works fine
- 🔒 Adds extra security layer
- 👍 Useful app

**What reviewers complain about**

- 🐛 Crashes on iOS 18 update
- 🐛 Doesn't work with Yubikey
- 🐛 Doesn't work with child accounts
- 🐛 Unreliable, constant issues
- 🐛 Locked out of accounts

**Reported bugs**

- Crashes on launch
- Doesn't detect nearby devices
- Endless login loop
- Incompatible with latest iOS

**Requested features**

- Support for NFC security keys
- Easier setup and usage
- Better compatibility with other devices


### Calculator Lock

[App page](https://appshunter.io/ios/app/calculator-lock-secure-vault/id6446200267)

Securely hide your private photos, videos, contacts, and passwords behind a disguised calculator interface. Protect your sensitive files with a secret vault and access them only through the app's unique interface. Features include intruder selfies and cloud backups.

**Highlights:** Photo hiding, Video hiding, Contact hiding, Password manager, Disguise mode, Intruder selfie, Cloud backup

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator Lock Pro Weekly | $1.99 | per 7 days |
| Hide Photos & Videos | $4.99 | per month |
| Calculator Lock Pro Yearly | $14.99 | per year |
| Remove Ads | $3.99 | one-time |
| Calculator Lock (Remove Ads) | $3.99 | one-time |
| Calculator Lock Pro (Discount) | $14.99 | one-time |
| Calculator Lock Pro (Lifetime) | $29.99 | one-time |

**What reviewers like**

- 🔒 Hidden app
- 👍 Good features
- 👍 Simple and easy to use
- 🔒 Secure vault for photos, videos, and passwords

**What reviewers complain about**

- 🐛 Buggy (doesn't save downloaded videos, can't paste in notes)
- 🔍 App name not very discreet
- 💸 Too much advertising

**Reported bugs**

- Doesn't save downloaded videos to gallery
- Can't paste information in notes
- Intruder selfie feature not working
- App icon change not working

**Requested features**

- Ability to change app name
- Sync between devices
- Ability to paste information in notes


## Frequently asked questions

### Is Google Smart Lock free?

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

### Is Calculator Lock free?

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

### Which has better reviews, Google Smart Lock or Calculator Lock?

Calculator Lock is rated higher. Google Smart Lock averages 2.5 out of 5 from 614 ratings, while Calculator Lock averages 4.6 from 6.1K ratings.

### Do Google Smart Lock or Calculator Lock have ads?

Calculator Lock shows ads; Google Smart Lock does not.

### Which is updated more often, Google Smart Lock or Calculator Lock?

Google Smart Lock ships an update every 2 months, and Calculator Lock every 2 weeks. Most recently, Google Smart Lock was updated on September 24, 2026 and Calculator Lock on September 23, 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.*