# Arc+ vs Surface Area Calculator + Cost

The clearest difference is rating: Arc+ at 4.6 against Surface Area Calculator + Cost's 3.5. Arc+ also leads on review sentiment (50% vs 22%) and monetization model (free vs free with in-app purchases). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Arc+ sells 1 one-off in-app purchase and Surface Area Calculator + Cost sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Arc+ holds the better App Store score, 4.6 against 3.5. Both are backed by a comparable volume of ratings — 113 and 24 respectively. Written reviews point the same way: 50% of Arc+'s written reviews are positive against 22% of Surface Area Calculator + Cost's.

Arc+ ships an update every 4 months, Surface Area Calculator + Cost every 6 months. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Arc+ | Surface Area Calculator + Cost |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (113 ratings)](https://appshunter.io/ios/app/arc-plus/id1464058503/reviews)** | [3.5 (24 ratings)](https://appshunter.io/ios/app/surface-area-calculator-plus-cost/id1502218219/reviews) |
| Number of ratings | **113** | 24 |
| Positive reviews | **50.0% of reviews** | 22.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 4 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mohamed Saad](https://appshunter.io/developer/1291109619) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## What reviewers say

### Arc+

[App page](https://appshunter.io/ios/app/arc-plus/id1464058503)

This utility app helps users calculate various dimensions of circular arcs, including radius, length, width, and height. It offers a simple interface where users input two known values to derive the rest. Additional features include a unit converter, result saving, and sharing capabilities.

**Highlights:** Calculate Radius, Length, Width, Height, Tangent, Input two known values to find others, Measurement units converter, Save results to favorites, Share calculations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Blocker | $4.99 | one-time |


### Surface Area Calculator + Cost

[App page](https://appshunter.io/ios/app/surface-area-calculator-plus-cost/id1502218219)

Calculate the surface area of various 3D geometric shapes and get an estimated cost for materials. Supports multiple units for calculations and results.

**Highlights:** Surface area calculation for 11 shapes, Material cost estimation, Multiple unit support, Results in various units, Subscription for unlimited access

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly package | $1.99 | per month |
| Annual Premium Package | $14.99 | per year |
| Remove ads | $19.99 | one-time |


## Frequently asked questions

### Is Arc+ free?

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

### Is Surface Area Calculator + Cost free?

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

### Which has better reviews, Arc+ or Surface Area Calculator + Cost?

Arc+ is rated higher. Arc+ averages 4.6 out of 5 from 113 ratings, while Surface Area Calculator + Cost averages 3.5 from 24 ratings.

### Do Arc+ or Surface Area Calculator + Cost have ads?

Neither Arc+ nor Surface Area Calculator + Cost shows ads.

### Which is updated more often, Arc+ or Surface Area Calculator + Cost?

Arc+ ships an update every 4 months, and Surface Area Calculator + Cost every 6 months. Most recently, Arc+ was updated on October 8, 2026 and Surface Area Calculator + Cost 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.*