Arc+ vs Diameter Finder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Arc+
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.
- Calculate Radius, Length, Width, Height, Tangent
- Input two known values to find others
- Measurement units converter
- Save results to favorites
- Share calculations
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Arc+ The Complete Circular Arc Calculator Calculates the Radius, Length, Width (chord), Height, Tangent How it works: Select two known values and type it in text boxes and click on ( = ) to get the required values. Features: Measurement units converter Save your results to a favorite list Share your results with others
Diameter Finder
This utility app provides a straightforward way to calculate circle properties. Simply input one known value (radius, diameter, circumference, or area) to instantly get the results for the others. It's designed for quick and no-fuss calculations.
- Calculate radius
- Calculate diameter
- Calculate circumference
- Calculate area
- Input any single value
- Quick results
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Diameter Finder - Circle Calculator. Do you need a quick and easy to use circle calculator? No problem, here it is. Enter one value to get the result in no time: Radius Diameter Circumference Area No fuss calculator. Does what it says on the tin.
Screenshots
Verdict
The clearest difference is review sentiment: Diameter Finder at 100% against Arc+'s 50%. Diameter Finder also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.6). Arc+'s advantage is ratings volume (113 vs 1). On price, update cadence, ads and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Arc+ sells 1 one-off in-app purchase. Diameter Finder asks for nothing beyond the download.
Diameter Finder holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Arc+ has 113 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Arc+'s written reviews are positive against 100% of Diameter Finder's.
Arc+ ships an update every 4 months, Diameter Finder every 5 months. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.
| Parameter | Arc+ | Diameter Finder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (113 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 113 — better | 1 |
| Update frequency | Every 4 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.1 — better |
| Further details — not scored | ||
| Size | 4 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Mohamed Saad | Krzysztof Gwiazda |
Customer experience
Arc+
Diameter Finder
In-app purchases
Arc+
- Ad Blocker$4.99
Diameter Finder
No in-app purchases
Questions
Is Arc+ free?
Is Diameter Finder free?
Which has better reviews, Arc+ or Diameter Finder?
Do Arc+ or Diameter Finder have ads?
Which is updated more often, Arc+ or Diameter Finder?
Other comparisons
