# Calculator + vs OpenSpace Parking

The clearest difference is review sentiment: Calculator + at 85% against OpenSpace Parking's 0%. Calculator + also leads on rating (4.6 vs 1.0) and update cadence (every 5 days vs every 3 months). OpenSpace Parking's advantage is in-app purchases (none vs 12) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Calculator + sells 12 in-app purchases, starting at $4.99 per month. OpenSpace Parking asks for nothing beyond the download.

Calculator + holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 85% of Calculator +'s written reviews are positive against 0% of OpenSpace Parking's.

Calculator + ships an update every 5 days, OpenSpace Parking every 3 months. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Calculator + | OpenSpace Parking |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10K ratings)](https://appshunter.io/ios/app/calculator-plus/id351815470/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/openspace-parking/id6739586750/reviews) |
| Number of ratings | **10K** | 1 |
| Positive reviews | **84.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 49 MB | 55 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [LogixITS](https://appshunter.io/developer/1670618863) |

## What reviewers say

### Calculator +

[App page](https://appshunter.io/ios/app/calculator-plus/id351815470)

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

**Highlights:** Free basic and scientific calculator, Intuitive interface with equation and result display, Fraction and percent support, Advanced editing capabilities, Polynomial and linear equation solver, Graphing calculator, Unit conversion and geometric calculators

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scientific Calculator | $4.99 | per month |
| Calculator | $39.99 | per year |
| Linear Calculator | $2.99 | one-time |
| Factoring Calculator | $2.99 | one-time |
| Handwriting Calculator | $2.99 | one-time |
| Currency Converter | $2.99 | one-time |
| Themes Pack | $2.99 | one-time |
| Graphing Calculator | $3.99 | one-time |
| Fraction Calculator | $3.99 | one-time |
| Scientific Calculator | $4.99 | one-time |
| Calculator Plus | $4.99 | one-time |
| Calculator | $16.99 | one-time |

**What reviewers like**

- 👍 Great features and easy to use
- 👍 Efficient and quick
- 👍 Versatile, functional calculator
- 👍 Fantastic, easy to use app
- 👍 Awesome calculator app

**What reviewers complain about**

- 🐛 New updated layout is awful
- 🐛 App is now terrible
- 🔒 Paying customer screwed over by update
- 🔒 Now timed trial, no free w/ads version
- 🔒 Not honest

**Reported bugs**

- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes

**Requested features**

- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines


### OpenSpace Parking

[App page](https://appshunter.io/ios/app/openspace-parking/id6739586750)

Instantly check real-time parking space availability at various locations. View available spots, distances, and navigate directly using Google Maps. Smart color-coding helps you quickly identify parking lot occupancy levels.

**Highlights:** Real-time space availability, Distance from current location, Map view of locations, Google Maps navigation integration, Smart color-coding for occupancy, Search by provider name

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calculator + free?

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

### Is OpenSpace Parking free?

OpenSpace Parking is free to download, with no in-app purchases.

### Which has better reviews, Calculator + or OpenSpace Parking?

Calculator + is rated higher. Calculator + averages 4.6 out of 5 from 10K ratings, while OpenSpace Parking averages 1.0 from 1 ratings.

### Do Calculator + or OpenSpace Parking have ads?

Calculator + shows ads; OpenSpace Parking does not.

### Which is updated more often, Calculator + or OpenSpace Parking?

Calculator + ships an update every 5 days, and OpenSpace Parking every 3 months. Most recently, Calculator + was updated on October 14, 2026 and OpenSpace Parking on October 1, 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.*