Comparison

Circle and Sphere Pro vs EGK MolecuLens AR

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Circle and Sphere Pro

This app calculates various geometric quantities for circles and spheres, including sectors and segments. It supports decimals and fractions, displays formulas and solutions step-by-step, and stores calculations in a history. Users can share their results.

Highlights
  • Calculates sphere and circle quantities
  • Supports sectors and segments
  • Shows formulas and step-by-step solutions
  • Handles decimals and fractions
  • Stores calculations in history
  • Allows sharing of results
Features
Read full description

This app calculates all quantities of a sphere (body of a sphere, circle, all parts of sector and segment). Therefore you must enter some variables (like the radius of a circle and the central angle). The algorithm searches the formulas of the missing quantities, shows them and calculates the results. Decimals and fractions are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Content ] - all important quantities for the circle and sphere calculation - formulas for all important quantities of a sphere, circle, sector and the segment - infographic to illustrate the topic - search bar to find the desired quantity - history function to save input - detailed solution - positive numbers, decimals and fractions are supported - no ads! [ Usage ] - there are several fields for entering the values ​​using a special keyboard - if values are missing, all fields are highlighted in orange - if values are oppositions (like "r = 1 and d = 3"), one affected field is highlighted in red - every value must be positive - maximum of alpha is 360° - beta must be less than 90° - if a value is no number, it is highlighted in red - the entries in the history can be deleted or sorted manually - if you select an entry in the history, it will be loaded automatically for the calculation - the entire history can be deleted by pressing a button - solutions can be shared

About

EGK MolecuLens AR

Features
Read full description

MolecuLens_AI brings chemistry to life with augmented reality! Identify and study molecules like O₂, N₂, H₂O, CO₂, and CH₄ in an immersive AR environment. Perfect for students and enthusiasts, this app features dynamic weather integration, educational pop-ups, a scoring system, achievements, and realistic animations. Adjust difficulty levels, track high scores, and enjoy sound effects with optional background music. Ideal for ages 10+ with a focus on interactive learning. Download now for just $3.99 and unlock a world of science!

Screenshots

Circle and Sphere Pro4 screens
EGK MolecuLens AR4 screens

Verdict

The call

The clearest difference is price: Circle and Sphere Pro at $2.99 against EGK MolecuLens AR's $19.99. Circle and Sphere Pro also leads on update cadence (monthly vs every 9 months) and iOS requirement (15.0 vs 18.4). On ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Circle and Sphere Pro costs $2.99 and EGK MolecuLens AR $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Circle and Sphere Pro ships an update monthly, EGK MolecuLens AR every 9 months. The most recent releases landed on August 30, 2026 and September 13, 2026 respectively.

Scorecard3 real differences · 7 level
Circle and Sphere Pro versus EGK MolecuLens AR: the parameters behind the verdict, then further details
ParameterCircle and Sphere ProEGK MolecuLens AR
Price$2.99 — better$19.99
Rating4.9 (7 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings7 — better—
Update frequencyMonthly — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.4
Further details — not scored
Size180 MB5 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbRIsaac Eng Gian Khor

In-app purchases

None

Circle and Sphere Pro

No in-app purchases

None

EGK MolecuLens AR

No in-app purchases

Questions

Is Circle and Sphere Pro free?
Circle and Sphere Pro costs $2.99, with no in-app purchases.
Is EGK MolecuLens AR free?
EGK MolecuLens AR costs $19.99, with no in-app purchases.
Do Circle and Sphere Pro or EGK MolecuLens AR have ads?
Neither Circle and Sphere Pro nor EGK MolecuLens AR shows ads.
Which is updated more often, Circle and Sphere Pro or EGK MolecuLens AR?
Circle and Sphere Pro ships an update monthly, and EGK MolecuLens AR every 9 months. Most recently, Circle and Sphere Pro was updated on August 30, 2026 and EGK MolecuLens AR on September 13, 2026.

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