Comparison

PhysKey Custom vs MathNotes

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

Head to head
About

PhysKey Custom

Read full description

A custom keyboard built for science and math enthusiasts. Say goodbye to the hassle of symbol input and streamline your typing on mobile. Features Type Greek letters (α, β, γ...) directly from the key layout Access frequently used physical constants and units in one tap Full coverage of math symbols (∫, Σ, √...) Works in every app — notes, social media, and more Perfect for writing science reports, logging experimental data, or chatting while studying. No more typing out "alpha" and hunting through conversion suggestions. Give PhysKey a try — simple, intuitive, and built for the way you think.

About

MathNotes

This app provides an infinite digital canvas for studying and visualizing mathematics. It allows users to create 2D and 3D graphs, take notes with LaTeX formatting, and convert handwritten equations into editable LaTeX using OCR. Ideal for students and professionals needing a comprehensive math workspace.

Highlights
  • Infinite digital canvas
  • 2D and 3D graph plotting
  • Formula OCR to LaTeX
  • LaTeX equation rendering
  • Interactive animated sliders
  • Note organization with media
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Transform the way you study and visualize mathematics with MathNotes, the ultimate infinite canvas built for students, professionals, and math enthusiasts! Whether you're plotting a simple 2D graph, exploring complex 3D surfaces, or simply taking digital notes with perfect LaTeX formatting, MathNotes gives you full freedom in a single, boundless workspace. FEATURES • Infinite Canvas: Pan, zoom, and organize your math notes unhindered! Add text, images, videos, and web links instantly. • Advanced Plotting Engine: Easily plot standard 2D functions, polar coordinates, and parametric curves. • Interactive 3D Surfaces: Visualize multi-variable formulas (`z = f(x,y)`) in full 3D space with an orbit camera. • Formula OCR Engine: Found a complicated equation? Simply snap a photo or scan it using our built-in ONNX-powered OCR to perfectly convert it into editable LaTeX. • Beautiful LaTeX Rendering: Write and render complicated mathematical formulas with gorgeous typography. • Scrubbable Constants: Use animated sliders to watch your 2D and 3D graphs react in real-time. • Custom Organization: Pin definitions, build concepts visually, and maintain your custom study notes. Designed for fluid interaction, MathNotes handles your deepest mathematical explorations with a clean, dynamic, and focused interface. Ready to master calculus, linear algebra, and trigonometry? Download MathNotes today and unlock the perfect math study canvas!

Screenshots

PhysKey Custom3 screens
MathNotes4 screens

Verdict

The call

The clearest difference is in-app purchases: PhysKey Custom at none against MathNotes's 1. PhysKey Custom also leads on ads (none vs shown). MathNotes's advantage is update cadence (every 2 weeks vs every 4 months) and device support (4 vs 2). On price 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

Both are free to download. MathNotes sells 1 one-off in-app purchase. PhysKey Custom asks for nothing beyond the download.

UpkeepUpdate frequency

PhysKey Custom ships an update every 4 months, MathNotes every 2 weeks. The most recent releases landed on September 19, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 4 level
PhysKey Custom versus MathNotes: the parameters behind the verdict, then further details
ParameterPhysKey CustomMathNotes
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.013.0 — better
Further details — not scored
Size5 MB340 MB
Age rating4+4+
DeveloperRyosuke AsanoVladislav Alikov

In-app purchases

None

PhysKey Custom

No in-app purchases

1 purchases

MathNotes

One-time1
  • Support the App and remove Ads$2.99

Questions

Is PhysKey Custom free?
PhysKey Custom is free to download, with no in-app purchases.
Is MathNotes free?
MathNotes is free to download, with in-app purchases available.
Do PhysKey Custom or MathNotes have ads?
MathNotes shows ads; PhysKey Custom does not.
Which is updated more often, PhysKey Custom or MathNotes?
PhysKey Custom ships an update every 4 months, and MathNotes every 2 weeks. Most recently, PhysKey Custom was updated on September 19, 2026 and MathNotes on September 24, 2026.

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