Fourier Series Visualiser vs Thesius
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fourier Series Visualiser
Create intricate epicycle drawings by tracing any shape with your finger. This free app visualizes the mathematical principles behind Fourier series, allowing you to adjust coefficients for different approximations and import SVG files for unique artwork. It's perfect for students, teachers, and math enthusiasts.
- Draw custom shapes for epicycle generation
- Adjust Fourier coefficients for approximation levels
- Import SVG files for artwork transformation
- Visualize complex Fourier series analysis
- Share drawings with friends
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Your new addictive drawing app that teaches you about one of the most important algorithms in maths. Completely free with no ads or in-app purchases. KEY FEATURES Draw any shape with your finger and watch it transform into a beautiful Fourier epicycle drawing. Adjust the number of Fourier coefficients to see different levels of approximation Import SVG files to transform existing artwork Visualise the maths behind complex Fourier series analysis Share your creations with your friends PERFECT FOR STUDENTS - Learn about Fourier transforms and signal processing TEACHERS - Demonstrate mathematical concepts in the classroom MATHS ENTHUSIASTS - Explore complex mathematical ideas ANYONE who wants to create beautiful drawings and learn about one of the most important algorithms in maths.
Thesius
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Stop Scattered Workflows. Start Moving Forward. Most students—undergrads, masters, PhD candidates—waste time juggling tools, losing ideas, and wondering if their work is actually good enough. Thesius gives that time back. Capture what matters instantly. Get honest feedback before you submit. Stay on track without the chaos of five different apps. What You Get—At Your Level Undergraduates Stop panicking before deadlines. Upload your essay or research paper. Get feedback on clarity, argument strength, and structure before your professor sees it. Learn faster. Submit with confidence. Masters Students Manage multiple complex projects without losing the thread. Track where each one stands. Get feedback that catches gaps before they derail your thesis. Move forward with direction. PhD Candidates Your research is layered. Your timeline is long. Thesius keeps all your work organized, surfaces patterns across projects, and gives you the critical feedback loop you need to stay on track—without waiting for your advisor. What Everyone Gets Real feedback, instantly — Upload a draft. Get the same critical eye your advisor would give—structure problems, weak arguments, missing citations—without the wait. One place for everything — Your ideas, past work, current projects, deadlines. See your progress at a glance. Time back — Built-in focus and smart breaks that work. Finish without burning out. Support when you need it — Stuck? Ask your AI coach. Get answers now, not next week. Your privacy protected — Secure, temporary processing. Your academic integrity stays intact. Available in English. Additional languages coming soon.
Screenshots
Verdict
The clearest difference is update cadence: Thesius at every 4 days against Fourier Series Visualiser's every 11 months. Thesius also leads on iOS requirement (15.6 vs 26.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Fourier Series Visualiser ships an update every 11 months, Thesius every 4 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.
| Parameter | Fourier Series Visualiser | Thesius |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (6 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 11 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 2 MB | 215 MB |
| Age rating | 4+ | 4+ |
| Developer | Jack Finnis | Seigneur Consults Limited |
In-app purchases
Fourier Series Visualiser
No in-app purchases
Thesius
No in-app purchases
Questions
Is Fourier Series Visualiser free?
Is Thesius free?
Do Fourier Series Visualiser or Thesius have ads?
Which is updated more often, Fourier Series Visualiser or Thesius?
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