Classroom Spinners vs Calcu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Classroom Spinners
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Classroom Spinners is a collection of spinners specifically designed for educators. Using a slider the spinner can be changed to accommodate a variety of setups: 3, 4, 5, 6, 8 or 10 sections. Sections can be labelled with either numbers or letters. Use Classroom Spinners to conduct probability experiments by spinning the spinner a specific number of times. With your students compare how the experimental probability compares with the theoretical probability?
Calcu
This app provides advanced logarithmic calculations and explanations, covering equation solving, Taylor series, digit-by-digit computation, and integral definitions. It also simplifies expressions, solves complex logarithmic equations, and includes a virtual slide rule.
- Solves logarithmic equations for y, x, and a
- Explains Taylor series for log_e(x)
- Illustrates digit-by-digit log_10(x) computation
- Explains log_e definition via integrals
- Simplifies logarithmic expressions
- Calculates and graphs complex logarithms
- Includes virtual slide rule
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Calcu-Logarithm performs calculations and helps user understand logarithms on advanced level: 1. Solves equation "y = log_a(x)” for “y”, “x”, and “a”, with relevant graphs. 2. Explains and illustrates how to compute log_e (x) from Taylor series. 3. Explains and illustrates how to compute log_10 (x) digit by digit (based on M.Goldberg algorithm). 4. Explains and provides proof of log_e definition as the integral of x inverse. 5. Simplifies logarithmic expressions and solves logarithmic equations with polynomials of up to 20th degree. 6. Includes virtual slide rule for multiplication and division. 7. Calculates, explains, and graphs logarithms of complex numbers. Developers welcome any feedback, please write to us at graphmath@aol.com. Please check out our other Math apps.
Screenshots
Verdict
The clearest difference is price: Calcu at Free against Classroom Spinners's $0.99. Calcu also leads on update cadence (every 3 days vs every 21 months). Classroom Spinners's advantage is iOS requirement (12.0 vs 15.0). On 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
Calcu is free to download; Classroom Spinners costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Classroom Spinners ships an update every 21 months, Calcu every 3 days. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.
| Parameter | Classroom Spinners | Calcu |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 21 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPad, Apple TV | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 7 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Ventura Educational Systems | Yuri Morozov |
In-app purchases
Classroom Spinners
No in-app purchases
Calcu
No in-app purchases
