Comparison

MechSpace vs Calculus & Probability Lab

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

Head to head
About

MechSpace

Features
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MechSpace is the AR-powered mechanism design platform for students, robotics teams, and STEM educators. Build real mechanical systems in augmented reality, simulate them with real physics, and export competition-ready code — all from your iPhone or iPad. DESIGN MECHANISMS IN AR Place gears, motors, beams, and connectors on any flat surface. Parts snap together automatically with real connection physics. Build drivetrains, lift arms, intakes, and more with parts from your favorite robotics ecosystem. REAL PHYSICS SIMULATION Run your mechanism and watch it come to life. Simple mode helps you learn the basics. Advanced mode delivers engineering-grade analysis including torque calculations, gear ratio breakdowns, friction modeling, stall diagnostics, and power consumption tracking. SCAN YOUR REAL PARTS Point your camera at VEX parts and MechSpace automatically recognizes them using on-device machine learning. Detected parts are added to your digital inventory so you always know what you have available to build with. EXPORT ROBOT CODE Turn your AR builds into real robot programs. Export C++ or Python code for VEX V5 and VEX IQ. Generated code includes motor configurations, autonomous routines, and gear ratio calculations — ready to run in VEXcode. BUILT FOR LEARNING Track your progress with build streaks, unlock achievements like Gear Master and Code Wizard, and take on timed design challenges. MechSpace makes learning mechanical engineering fun and rewarding. SUPPORTED ECOSYSTEMS - VEX V5 - VEX IQ MechSpace is completely free — all features included, no subscriptions or in-app purchases.

About

Calculus & Probability Lab

Features
Read full description

Calculus & Probability Lab turns two of the hardest STEM subjects into something you can see, touch, and drag with your finger. Instead of static graphs in a textbook, every derivative, integral, and probability distribution becomes a real 3D object you orbit, zoom, and reshape live. Whether you're in AP Calculus, a first-year college calculus or statistics course, or just relearning math you forgot, this app trades memorized formulas for visual intuition: drag a point along a curve and watch its tangent-line slope update instantly, or watch a histogram built from real dice tosses close in on the bell curve as you roll. FUNCTION LAB — 3D VISUALIZER • 22 function families: lines, parabolas, cubics, quartics, sine/cosine waves, exponentials, natural logs, reciprocals, square roots, Gaussian bumps, logistic S-curves • Genuine z = f(x, y) surfaces — paraboloids, saddles, Gaussian hills, ripples, sphere caps, cones, tilted planes, monkey saddles, egg-carton surfaces, twin peaks — drag to orbit, pinch to zoom • Live tangent-line overlay — move a point along any curve and watch the exact derivative f'(x) recompute in real time • Riemann sum overlay — slide from 1 to 60 rectangles and watch the sum converge to the exact definite integral • Every formula is closed-form and exact — no approximation, no drift PROBABILITY LAB — PHYSICS DICE • Toss physics-simulated dice and build a genuine empirical histogram, roll after roll • Scenarios span dice-sum outcomes, coin-flip binomial trials, and Poisson arrival processes • Overlay your empirical results against the exact theoretical distribution on the same chart • Watch the Central Limit Theorem happen live: enough trials and the histogram closes in on the normal curve • Track empirical mean against theoretical mean at every roll LEARNING PATH — 4 WORLDS, ~50 LESSONS • World 1, Functions & Limits: what a function is, families of functions, slope, one- and two-sided limits, continuity, average vs. instantaneous rate of change, exponentials and logs • World 2, Derivative Lab: the derivative as slope, power/product/quotient/chain rules, higher derivatives, tangent planes and partial derivatives, critical points, related rates, optimization, the Mean Value Theorem • World 3, Integral Lab: area under a curve, Riemann sums, the definite integral, antiderivatives, the Fundamental Theorem of Calculus, net change, average value, area between curves, volumes of revolution, improper and numerical integration • World 4, Probability & Distributions: sample space and events, combining probabilities, the two-dice sum, random variables, expected value, binomial and Poisson models, the normal curve • Every lesson deep-links straight into the matching 3D lab, so theory and visualization reinforce each other AI TUTOR • Tap Explain on any surface, formula, or dice distribution and get a plain-language breakdown of exactly what's in front of you — your specific coefficients, your specific slope, your specific mean and standard deviation, not a generic textbook definition BUILT FOR REAL STUDY, NOT JUST BROWSING • Progress tracking across every world and lesson, so you always know where you left off • A limited number of dice rolls each day on the free tier; upgrade to roll without limits, unlock every function family and 3D surface, every lesson, and the AI tutor • A clean, dark, distraction-free interface built for a late-night study session, not a cluttered graphing-calculator UI • Monthly and Annual plans, with a 3-day trial on Annual — cancel anytime in your account settings Calculus and probability are usually taught as two separate walls of formulas to memorize before an exam. Calculus & Probability Lab treats them as one connected, visual subject — build the intuition once, and the formulas stop needing to be memorized at all. Terms of Use https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://coddykit.com/terms/privacy-policy

Screenshots

MechSpace4 screens
Calculus & Probability Lab4 screens

Verdict

The call

The clearest difference is in-app purchases: MechSpace at none against Calculus & Probability Lab's 2. MechSpace also leads on ads (none vs shown). Calculus & Probability Lab's advantage is iOS requirement (15.1 vs 18.0). On price and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Calculus & Probability Lab sells 2 in-app purchases, starting at $4.99 per month. MechSpace asks for nothing beyond the download.

Scorecard3 real differences Ā· 2 level
MechSpace versus Calculus & Probability Lab: the parameters behind the verdict, then further details
ParameterMechSpaceCalculus & Probability Lab
PriceFreeFree
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.1 — better
Further details — not scored
Size11 MB58 MB
Age rating4+4+
DeveloperAethel AI Inc.MEHMET CANKER (TR)

In-app purchases

None

MechSpace

No in-app purchases

2 purchases

Calculus & Probability Lab

Subscriptions2
  • CalcProb Lab Pro monthly$4.991 Month
  • CalcProb Lab Pro annual$24.991 Year

Questions

Is MechSpace free?
MechSpace is free to download, with no in-app purchases.
Is Calculus & Probability Lab free?
Calculus & Probability Lab is free to download, with in-app purchases available.
Do MechSpace or Calculus & Probability Lab have ads?
Calculus & Probability Lab shows ads; MechSpace does not.

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