Calc Visualizer vs Spelling German Basic School
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calc Visualizer
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Calc Visualizer helps the user better understand some of the most important concepts of calculus. The app includes eight different modules: 1) Descartes' Method, 2) Fermat's Method, 3) Derivatives, 4) Areas under Curves, 5) Fundamental Theorem, 6) Slope Fields, 7) Max-Min problems, and 8) Related rate problems. Highly interactive, but with extensive instructional help screens and animations.
Spelling German Basic School
Master common German spelling errors with over 900 essential words for elementary students. This app focuses on frequently misspelled words and basic grammar rules for effective and playful learning.
- Over 900 essential German words
- Focus on frequently misspelled words
- Covers basic grammar rules (uppercase, das/dass, tz/zz/ck)
- Efficient learning algorithm
- Simple and clear interface
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Fast and effective! What is correct: vielleicht or vieleicht, nämlich or nähmlich, den or denn etc. The Basis: Over 900 words which a „Grundschüler“ should know! - learn the right thing - learn most effective Learn that what you need: The words most frequently misspelled- and not dozens of spelling rules, which you may forget anyway! Extensive analyzes have revealed a list of words, which are often used, but unfortunately often misspelled - these words you will learn quickly and almost playful with this app. Perhaps you will also be amazed how some commonly used words are spelled correctly - give it a try! Plus, there's the usual topics of upper and lower case letters, as well as das or dass and last not least tz, zz and k, kk or ck. Select the lesson and off you go! Learn as efficiently as possible: A complex algorithm determines the order in which words / phrases are shown - thats how rapid and sustainable learning is possible. No complicated Operation - but clear and simple, focused on effective learning! Learn on the go or at your desk - the results will speak.
Screenshots
Verdict
The clearest difference is price: Calc Visualizer at Free against Spelling German Basic School's $1.99. Calc Visualizer also leads on iOS requirement (8.0 vs 16.6). Spelling German Basic School's advantage is update cadence (every 6 weeks vs every 44 months) and device support (3 vs 1). On in-app purchases 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
Calc Visualizer is free to download; Spelling German Basic School costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calc Visualizer ships an update every 44 months, Spelling German Basic School every 6 weeks. The most recent releases landed on September 9, 2026 and July 9, 2026 respectively.
| Parameter | Calc Visualizer | Spelling German Basic School |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | — | 3.9 (9 ratings) — better |
| Positive reviews | — | 75.0% of reviews |
| Number of ratings | — | 9 — better |
| Update frequency | Every 44 months | Every 6 weeks — better |
| Ads | No | — |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 39 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Bretl | Dieter Bartsch |
In-app purchases
Calc Visualizer
No in-app purchases
Spelling German Basic School
No in-app purchases
Questions
Is Calc Visualizer free?
Is Spelling German Basic School free?
Which is updated more often, Calc Visualizer or Spelling German Basic School?
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