Ratio Rumble vs Decimal Rounding
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ratio Rumble
Engage in a potion-mixing competition by creating specific ratios to win. This game supports learning about equivalent ratios, rates, fractions, and decimals through contextual situations and visual representations.
- Build custom potions
- Create ratios to win
- Learn equivalent ratios
- Visual ratio representations
- Connect ratios to fractions/decimals
- Developed by educators
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The battle is on in this game where you build your own potions! Create ratios to win this mixture mix-off! Ratio Rumble supports mathematical learning about equivalent ratios, and is relevant to Common Core topics such as: •Identifying ratios when used in a variety contextual situations •Providing visual representations of ratios •Solving common problems or communicating by using rate •Explaining why ratios and rates naturally relate to fractions and decimals. This app was developed as part of the Math Snacks initiative. Additional games, animations, and teacher support materials are available at http://mathsnacks.org. Developed by mathematics educators, researchers and game developers at the Learning Games Lab at New Mexico State University. Games developed by the Learning Games Lab undergo a rigorous instructional design process, extensive user testing, and input from learners, teachers, and researchers. For more information about the NMSU Learning Games Lab, visit http://learninggameslab.org. Math Snack materials were developed with support from the National Science Foundation (0918794). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. Some materials were originally prototyped or discussed as part of a cooperative agreement from the U.S. Department of Education (U295A050004).
Decimal Rounding
This educational app helps users learn and practice rounding decimal numbers. It offers guided step-by-step problem-solving with customizable settings for a stress-free learning experience. Ideal for students and anyone needing to master decimal rounding.
- Learn decimal rounding
- Customizable problems
- Random problem generation
- Step-by-step guidance
- Stress-free learning environment
- Adjustable interface colors and animations
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Decimal Rounding helps students learn and practice rounding decimal numbers step by step. Students can solve randomly generated problems or enter their own decimal numbers. Decimals can be rounded to the nearest whole number, tenth, hundredth, or thousandth. They can also be rounded to 0, 1, 2, or 3 decimal places. The app guides students through each problem one step at a time. There are no penalties for wrong answers, no timers, and no pressure. The clean interface helps create a calm learning environment. Features: - Decimal numbers can have 2–8 digits - Randomly generated or manually entered problems - Round to the nearest whole number, tenth, hundredth, or thousandth - Round to 0, 1, 2, or 3 decimal places - Customizable interface colors - Adjustable animation speed - Different interfaces for iPhone and iPad - Portrait and landscape orientation on iPad Other iDevBooks Math Apps: Other iDevBooks math apps include Column Subtraction, Column Addition, Long Division, Long Multiplication, Lattice Multiplication, Visual Multiplication Table, Fraction Math, Partial Differences Subtraction, Partial Quotients Division, Partial Sums Addition, and more. Feedback: New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback. Privacy: This app has no ads, no in-app purchases, and does not transmit user data during operation. The app also does not contain links to other apps or to the web.
Screenshots
Verdict
The clearest difference is price: Ratio Rumble at Free against Decimal Rounding's $3.99. Ratio Rumble also leads on ratings volume (7 vs 2) and iOS requirement (5.1.1 vs 17.6). Decimal Rounding's advantage is rating (5.0 vs 3.4) and chart position (#191 vs unranked). On update cadence, 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
Ratio Rumble is free to download; Decimal Rounding costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Decimal Rounding holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews point the same way: 91% of Ratio Rumble's written reviews are positive against 100% of Decimal Rounding's.
Ratio Rumble ships an update every 8 months, Decimal Rounding every 12 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.
| Parameter | Ratio Rumble | Decimal Rounding |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.4 (7 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 90.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 — better | 2 |
| Update frequency | Every 8 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #191 — better |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 5.1.1 — better | 17.6 |
| Further details — not scored | ||
| Size | 45 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | New Mexico State University Board of Regents | Esa Helttula |
Customer experience
Ratio Rumble
Decimal Rounding
In-app purchases
Ratio Rumble
No in-app purchases
Decimal Rounding
No in-app purchases
Questions
Is Ratio Rumble free?
Is Decimal Rounding free?
Which has better reviews, Ratio Rumble or Decimal Rounding?
Do Ratio Rumble or Decimal Rounding have ads?
Which is updated more often, Ratio Rumble or Decimal Rounding?
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