Comparison

Eureka Calculator vs Formula Kit

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

Head to head
About

Eureka Calculator

This app is a mobile mathematical programming environment that brings advanced computing power and flexibility to your device. It features a natural symbolic language and an intuitive interface for efficient formula writing and programming.

Highlights
  • Advanced mathematical functions
  • Customizable interface
  • Natural symbolic language (Magic)
  • Intuitive keyboard
  • Efficient programming tool
Features
Read full description

Amazing new mathematical programming tool. Now in offer: 50% off. Eureka is a mathematical programming environment that is able to transfer the characteristics of the most sophisticated programming languages to your personal mobile device (iPhone, iPad) Eureka will prove to be invaluable to your work because of its: • Computing power. It comes with basic and advanced mathematical functions from the most sophisticated libraries. • Flexibility. It can be customised and fully adapted to meet your technical and scientific needs as it can be configured to show the functions that you need for your job and hides those that you do not. • Naturalness. Eureka uses a symbolic language designed and developed in-house called Magic that enables formulae to be written naturally, that is, it uses generally accepted mathematical notation and symbols, which makes formulations extraordinarily natural, easy to use and read. • Ease of use. Its natural language, symbolic representations, meticulously designed keyboard – divided into readily accessible and intuitive panels, its customisable settings and flexibility mean that the system is easy to use and quick to program, all of which makes it a simple and efficient tool.

About

Formula Kit

Easily create, edit, and export mathematical and scientific formulas with a dedicated LaTeX editor. Features real-time rendering, a custom keyboard, and extensive template library for offline use.

Highlights
  • Real-time LaTeX rendering
  • Over 400 formula templates
  • Custom auxiliary keyboard
  • Image and code export
  • Formula library and management
  • Offline functionality
  • History and preview
Features
Read full description

Type, edit and export LaTeX formulas in one app: change a formula right in the preview or edit the LaTeX source itself; photos, images and handwriting all turn into editable code; 544 templates, a 258-symbol keyboard, live KaTeX rendering and one-tap high-res PNG / LaTeX / MathML export. Whether you are writing academic papers, preparing lesson notes, or organizing science and engineering notes, you can input, edit and export formulas in one app. Core Features • Preview editing and LaTeX code editing: the preview area is the editing area. Tap a formula to change it on the spot — what you see is what you get; you can also edit the LaTeX code directly. • Formula recognition: take a photo, pick one from your photo library, or write by hand — all are recognized as LaTeX code automatically. • 258-symbol keyboard: a custom keyboard built for formula input, with a clearly organized symbol panel (8 categories, 258 symbols: common, arithmetic, Greek letters, structures, arrows, functions and more), precise cursor dragging and LaTeX command autocomplete — much faster input. • One-tap high-res PNG and LaTeX / MathML export: save a formula as a high-resolution PNG in one tap (no watermark with Pro); export LaTeX, MathML, HTML or SVG code for papers, web pages and slide decks. • 544 formulas, live preview: 544 built-in formula templates across 14 subjects including math, physics, chemistry and computer science, ready out of the box; rendered in real time with the KaTeX engine so you see results as you type, with instant syntax hints; one-tap favorites and custom categories keep everything organized. • History and full-screen preview: editing history is saved automatically and easy to browse as thumbnails; full-screen preview appears automatically after you copy a formula. Why Formula Kit • Lightweight and fast — quick launch, smooth rendering • iPhone, iPad and Mac • Core features are free; upgrade to Pro to unlock full recognition, watermark-free export and unlimited favorites (yearly subscription or lifetime purchase) Who it is for • Students (high school / university / graduate) • Teachers and professors • Researchers • Engineers and technical writers • Anyone who needs to type mathematical formulas Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Eureka Calculator3 screens
Formula Kit4 screens

Verdict

The call

The clearest difference is in-app purchases: Formula Kit at none against Eureka Calculator's 2. Formula Kit also leads on update cadence (every 11 days vs every 17 months). Eureka Calculator's advantage is iOS requirement (12.0 vs 17.0). On price, ads 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

Both are free to download. Eureka Calculator sells 2 one-off in-app purchases. Formula Kit asks for nothing beyond the download.

UpkeepUpdate frequency

Eureka Calculator ships an update every 17 months, Formula Kit every 11 days. The most recent releases landed on October 7, 2026 and October 23, 2026 respectively.

Scorecard4 real differences · 6 level
Eureka Calculator versus Formula Kit: the parameters behind the verdict, then further details
ParameterEureka CalculatorFormula Kit
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 17 monthsEvery 11 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better17.0
Further details — not scored
Size2 MB61 MB
Age rating4+4+
DeveloperTomas Crespo玉良 刘

Customer experience

Eureka Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Formula Kit

Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Eureka Calculator

One-time2
  • Premium option for iPhone$4.99
  • Premium option for iPad$9.99
None

Formula Kit

No in-app purchases

Questions

Is Eureka Calculator free?
Eureka Calculator is free to download, with in-app purchases available.
Is Formula Kit free?
Formula Kit is free to download, with no in-app purchases.
Do Eureka Calculator or Formula Kit have ads?
Neither Eureka Calculator nor Formula Kit shows ads.
Which is updated more often, Eureka Calculator or Formula Kit?
Eureka Calculator ships an update every 17 months, and Formula Kit every 11 days. Most recently, Eureka Calculator was updated on October 7, 2026 and Formula Kit on October 23, 2026.

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