# Calculator vs Calculator Lock

The clearest difference is rating: Calculator Lock at 4.6 against Calculator's 3.0. Calculator Lock also leads on review sentiment (76% vs 38%) and update cadence (every 2 weeks vs every 4 months). Calculator's advantage is in-app purchases (none vs 7) and ads (none vs shown). On price, ratings volume 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. Calculator asks for nothing beyond the download.

Calculator Lock holds the better App Store score, 4.6 against 3.0. Both are backed by a comparable volume of ratings — 9.8K and 6.1K respectively. Written reviews point the same way: 38% of Calculator's written reviews are positive against 76% of Calculator Lock's.

Calculator ships an update every 4 months, Calculator Lock every 2 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Calculator | Calculator Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (9.8K ratings)](https://appshunter.io/ios/app/calculator/id1069511488/reviews) | **[4.6 (6.1K ratings)](https://appshunter.io/ios/app/calculator-lock-secure-vault/id6446200267/reviews)** |
| Number of ratings | **9.8K** | 6.1K |
| Positive reviews | 37.8% of reviews | **75.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 80 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Apple](https://appshunter.io/developer/284417353) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator/id1069511488)

This app offers both basic and scientific calculators for quick solutions to mathematical expressions. It also features a "Math Notes" function that allows users to type or write out equations and see them solved inline, with support for variables and graphing.

**Highlights:** Basic and scientific calculators, Type or write math expressions, Inline equation solving, Variable creation and use, Equation graphing, Unit and currency conversion, Calculation history

**Features:** Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Basic calculator functionality
- 💡 Math notes feature
- 🚀 Clean, simple design

**What reviewers complain about**

- 🐛 Calculation errors
- 🔍 Lack of history/memory functions
- 🤔 Inconvenient to access advanced features
- 🤯 Frustrating to fix mistakes
- 🙄 Removed useful features in recent updates

**Reported bugs**

- Calculator disappearing from home screen
- Incorrect calculation results
- Inconsistent behavior with parentheses and scientific functions

**Requested features**

- Restore ability to repeat calculations with '='
- Add 'clear' button
- Show full calculation history
- Improve usability for advanced math
- Bring calculator to iPad


### 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 Calculator free?

Calculator 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, Calculator or Calculator Lock?

Calculator Lock is rated higher. Calculator averages 3.0 out of 5 from 9.8K ratings, while Calculator Lock averages 4.6 from 6.1K ratings.

### Do Calculator or Calculator Lock have ads?

Calculator Lock shows ads; Calculator does not.

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

Calculator ships an update every 4 months, and Calculator Lock every 2 weeks. Most recently, Calculator 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.*