Dux AI vs Formula Kit
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Dux AI
Get instant academic feedback on your assignments before submission. This AI-powered tool offers detailed critiques, grade predictions, and step-by-step explanations for math and science problems. Track your progress and improve your grades across all subjects.
- Instant assignment marking
- Detailed academic feedback
- AI grade calculator
- Math and science step-by-step feedback
- Assignment progress tracker
- Essay grading and rubric scoring
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Dux AI: The Smart Assignment Tracker & Marking App Stop guessing your grades. Dux AI is the advanced marking app designed to give students instant academic feedback before they submit. Whether you need a grade calculator for your next essay or detailed math feedback on a complex problem, Dux AI is your pocket examiner. WHY DUX AI? β’ Instant Marking App Donβt wait for your teacher. Snap a photo of your work and get immediate marking based on real college grades criteria. β’ Detailed Academic Feedback We donβt just give you the answer. We provide deep academic feedback on structure, reasoning, and clarity so you can rewrite and improve. β’ Advanced Grade Calculator Use our AI grade calculator to predict your score. See exactly where you lost marks and how to gain them back. β’ Math & Science Feedback Stuck on a problem? Get step-by-step math feedback that explains the logic, not just the solution. β’ The Ultimate Assignment Tracker Keep track of your improvements. Use Dux AI as an assignment tracker to monitor your progress across all subjects, from History to Physics. KEY FEATURES: Essay Grading: Upload your paper for line-by-line critique. Study Feedback: tailored tips to help you revise smarter. Rubric Scoring: We grade against standard university rubrics. Subject Agnostic: Works for English, Science, Math, and Arts. Download Dux AI todayβyour personal marking app for better college grades. *FULL GRADING, DETAILED RUBRICS, AND PERSONALIZED IMPROVEMENT TIPS REQUIRE A SUBSCRIPTION TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Β© 2026 Dux AI LLC. All rights reserved.
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.
- Real-time LaTeX rendering
- Over 400 formula templates
- Custom auxiliary keyboard
- Image and code export
- Formula library and management
- Offline functionality
- History and preview
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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 β’ Preview editing and LaTeX code editing: the preview area is the editing area. Tap a formula to change it on the spot β what you see is what you get; you can also edit the LaTeX code directly. β’ Formula recognition: take a photo, pick one from your photo library, or write by hand β all are recognized as LaTeX code automatically. β’ 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 β much faster input. β’ 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. β’ 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. β’ 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 β’ Lightweight and fast β quick launch, smooth rendering β’ iPhone, iPad and Mac β’ 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 β’ Students (high school / university / graduate) β’ Teachers and professors β’ Researchers β’ Engineers and technical writers β’ Anyone who needs to type mathematical formulas Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Formula Kit at none against Dux AI's 2. Formula Kit also leads on review sentiment (100% vs 67%) and device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Dux AI sells 2 in-app purchases, starting at $2.99 per month. Formula Kit asks for nothing beyond the download.
Dux AI ships an update weekly, Formula Kit every 11 days. The most recent releases landed on October 14, 2026 and October 23, 2026 respectively.
| Parameter | Dux AI | Formula Kit |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | 100.0% of reviews β better |
| Update frequency | Weekly β better | Every 11 days |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Monetization | Freemium β better | Paid |
| Devices | iPhone | iPhone, iPad, Mac β better |
| Requires iOS | 17.6 | 17.0 β better |
| Further details β not scored | ||
| Size | 8 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Ariel Walters | ηθ― ε |
Customer experience
Dux AI
Formula Kit
In-app purchases
Dux AI
- Dux AI Monthly Plan$2.991 Month
- Dux AI Yearly Plan3 Days trial$9.991 Year
Formula Kit
No in-app purchases









