RoboTone. vs Kid's Card Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RoboTone.
This app helps children develop absolute listening skills through interactive musical challenges. Players learn to identify tones by playing a virtual piano and then compete against a "robo" by selecting the correct notes. Settings allow customization of tones and instruments.
- Absolute listening skill development
- Interactive musical challenges
- Virtual piano gameplay
- Tone identification battles
- Customizable tones and instruments
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Hit the tones, beat the robo! RoboTone is an application to strengthen absolute listening skill for your kids, especially grade school students. They say, it's difficult to get the absolute listening skill after grown up, so try this app before you getting old. First of all, play the piano as you like to listen and be familiar with the tones from this app. Next, tap the battle button and do the battle. Select the tone(s) you listen, press the answer to go! You are correct, the robo's power deceases. It's time to beat the robo! To tap the setting button, you can change the tones number and instrument.
Kid's Card Calc
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Two number cards. One answer. A simple rhythm that helps children enjoy mental math. Kids Card Calculation is a focused arithmetic practice app for early elementary learners. Choose an operation and a level, answer 10 to 52 questions, and review completion time and mistakes when finished. PRACTICE ALL FOUR OPERATIONS • Addition: Add each new number to the running total • Subtraction: Subtract each new number from the starting total • Multiplication: Solve a new multiplication question each time • Division: Practice problems that divide evenly, with no remainders FOUR LEVELS THAT GROW STEP BY STEP • Level 1: Numbers 1–5 / 10 questions • Level 2: Numbers 1–10 / 20 questions • Level 3: Numbers 1–10 / 40 questions • Level 4: Numbers 1–13 / 52 questions Start with a short session, then move up when your child is ready. Each operation adjusts the problem range to suit the selected level. SEE PROGRESS CLEARLY • Check time and mistakes after every session • Review personal bests by operation and level • Keep recent results on the device DESIGNED FOR CHILDREN AND FAMILIES • Large number cards and an easy-to-use keypad • Calm, focused design without distracting game elements • No ads • No subscriptions or in-app purchases • No account required • Core practice works offline GOOD FOR • Short daily math practice • Building mental arithmetic fluency • Reviewing addition, subtraction, multiplication, and division • Home learning and school-break review Help your child turn “I solved it!” into lasting confidence—one question at a time. TERMS OF USE (APPLE STANDARD EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: RoboTone. at Free against Kid's Card Calc's $1.99. RoboTone. also leads on in-app purchases (none vs 3). Kid's Card Calc's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 4 months). On device support and iOS requirement 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
RoboTone. is free to download; Kid's Card Calc costs $1.99 up front. Kid's Card Calc sells 3 in-app purchases, starting at $1.99 per month. RoboTone. asks for nothing beyond the download.
RoboTone. ships an update every 4 months, Kid's Card Calc every 3 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | RoboTone. | Kid's Card Calc |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 64 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | MASAHIRO MIZUTANI | sheeplab LLC |
In-app purchases
RoboTone.
No in-app purchases
Kid's Card Calc
- Premium Plan (Monthly)$1.991 Month
- Premium Plan (Annual)$5.991 Year
- Premium Plan$0.99









