# Calculator Plus #1 vs Corridor Safety

The clearest difference is in-app purchases: Corridor Safety at none against Calculator Plus #1's 7. Corridor Safety also leads on ads (none vs shown) and update cadence (weekly vs every 5 weeks). Calculator Plus #1's advantage is ratings volume (5.1K vs 1) and iOS requirement (15 vs 18.0). On price, rating and device support there is nothing between them.

Both are free to download. Calculator Plus #1 sells 7 in-app purchases, starting at $0.99 per month. Corridor Safety asks for nothing beyond the download.

Corridor Safety holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Calculator Plus #1 has 5.1K ratings behind it against 1, so its average is the more settled of the two.

Calculator Plus #1 ships an update every 5 weeks, Corridor Safety weekly. The most recent releases landed on November 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Calculator Plus #1 | Corridor Safety |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (5.1K ratings)](https://appshunter.io/ios/app/calculator-plus-1/id576156235/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/corridor-safety/id6745721719/reviews)** |
| Number of ratings | **5.1K** | 1 |
| Positive reviews | 88.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 157 MB | 92 MB |
| Requires iOS | **15** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DigitAlchemy LLC](https://appshunter.io/developer/376971628) | [Aqsacom](https://appshunter.io/developer/1740603655) |

## What reviewers say

### Calculator Plus #1

[App page](https://appshunter.io/ios/app/calculator-plus-1/id576156235)

A straightforward calculator app designed for everyday math, school, budgeting, and shopping. It offers essential functions, a clear interface with large buttons, and a history log for reviewing past calculations. Advanced features include memory functions, percentage calculations, and multi-window support for efficient workflow.

**Highlights:** Basic arithmetic operations, Calculation history, Memory function, Percentage calculations, Large buttons and display, Customizable themes, Multi-window mode

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calculator with History | $0.99 | per month |
| Calculator with History | $1.49 | per month |
| Simple Calculator - No Ads | $6.29 | per year |
| Simple Calculator - No Ads | $8.99 | per year |
| Remove ads | $3.99 | one-time |
| Multiple Basic Calculations | $8.99 | one-time |
| Multiple Basic Calculations | $12.99 | one-time |

**What reviewers like**

- 🚀 Great calculator
- 👍 Easy to use
- 👍 Looks very nice
- 👍 Reliable and dependable
- 👍 Useful features like memory

**What reviewers complain about**

- 🐛 Ads disrupt calculations
- 🐛 Too many ads
- 🐛 Ads pop up in the middle of calculations

**Reported bugs**

- App crashes or doesn't open
- Ads still show up even after paying to remove them

**Requested features**

- Add brackets/parentheses for arithmetic operations
- Improve arithmetic operator priority
- Add more algebraic and trigonometric functions


### Corridor Safety

[App page](https://appshunter.io/ios/app/corridor-safety/id6745721719)

This safety platform provides real-time alerts and personalized guidance during emergencies. It helps users understand unfolding situations, navigate to safe zones, and report incidents to security teams. The goal is to minimize danger and impact by enabling faster, informed decisions.

**Highlights:** Real-time emergency alerts, Personalized evacuation guidance, Location-based notifications, Incident reporting, Communication with security teams

**In-app purchases:** none


## Frequently asked questions

### Is Calculator Plus #1 free?

Calculator Plus #1 is free to download, with in-app purchases available.

### Is Corridor Safety free?

Corridor Safety is free to download, with no in-app purchases.

### Which has better reviews, Calculator Plus #1 or Corridor Safety?

Corridor Safety is rated higher. Calculator Plus #1 averages 4.8 out of 5 from 5.1K ratings, while Corridor Safety averages 5.0 from 1 ratings.

### Do Calculator Plus #1 or Corridor Safety have ads?

Calculator Plus #1 shows ads; Corridor Safety does not.

### Which is updated more often, Calculator Plus #1 or Corridor Safety?

Calculator Plus #1 ships an update every 5 weeks, and Corridor Safety weekly. Most recently, Calculator Plus #1 was updated on November 1, 2026 and Corridor Safety on October 13, 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.*