Numbers vs Error Pilot
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Numbers
This interactive math app helps elementary students master place value and other core concepts through engaging flip cards and hands-on gestures. It covers whole numbers, decimals, fractions, percentages, multiplication, money, time, and more with 14 distinct learning modes.
- 14 learning modes
- Place value exploration (ones to millions)
- Decimal and fraction visualization
- Multiplication practice
- Money and time telling
- Interactive flip cards with gestures
- Auditory learning support
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Numbers is a fun and interactive math learning app designed for elementary students. With colorful flip cards and hands-on gestures, children can explore essential math concepts through play. The app features 14 learning modes covering a wide range of math topics: Whole Numbers - Explore place value from ones to millions with up to 7 digit cards. See the expanded decomposition form to understand how numbers are built. Decimals - Learn decimal place values from thousands down to thousandths with a visual decimal point overlay. Fractions - Discover fractions with six linked cards showing the fraction, decimal, percentage, name, pie chart, and equivalent fraction. Mixed Fractions - Convert between improper fractions and mixed numbers. See pie charts that show whole parts and remainders side by side. Percentages - Calculate percentages of any number. See the equation laid out as cards with a visual bar showing the proportion. Multiplication - Practice times tables from 1 to 12 with dot arrays and skip counting sequences. Money - Count US dollars and British pounds with coins and bills. The total updates automatically as you add or remove. Time - Tell time with both analog and digital clocks. Minutes move in 5 minute steps with hour and AM PM rollover. Rounding - Round any number from 0 to 9999 to the nearest 10, 100, or 1000. A rule card explains the rounding logic. Roman Numerals - See any number from 1 to 3999 as a Roman numeral with a breakdown by thousands, hundreds, tens, and ones. Temperature - Convert between Celsius and Fahrenheit with a color changing thermometer that responds to the temperature. Length - Convert between centimeters, meters, kilometers, and miles. Weight - Convert between grams and kilograms. Water Volume - Convert between milliliters and liters. Every card uses a satisfying split flap animation. Swipe up or down to change values, tap to increment, and double tap to decrement. A listen button reads the current content aloud to support auditory learners. Designed for iPad and iPhone with no ads, no in app purchases, and no internet required.
Error Pilot
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Error Pilot helps students and parents capture, organize, and review mistake questions. Use the camera to capture worksheets, review and edit recognized questions before saving, and organize multiple mistakes by subject, knowledge point, and mastery status. Error Pilot turns scattered practice mistakes into structured material you can review, print, and track over time. Key features: - Capture mistake questions from paper and check recognition results - Save multiple mistakes from the same worksheet flow - Organize mistakes by subject and knowledge point - Follow review plans with subject and mastery filters - Review weak areas with knowledge diagnosis and study reports - Export PDF files for printing and offline practice with membership access Subscriptions and legal information: - Error Pilot offers Pro monthly and yearly auto-renewable subscriptions through Apple's App Store. The purchase screen shows the product name, billing period, and price before purchase. - Terms of Use (EULA): https://www.errorpilot.vip/terms.html - Privacy Policy: https://www.errorpilot.vip/privacy.html Recognition and learning suggestions are provided as study assistance. Please review the results together with the original question and your teacher's guidance.
Screenshots
Verdict
The clearest difference is price: Error Pilot at Free against Numbers's $2.99. On ads, in-app purchases, 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
Error Pilot is free to download; Numbers costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Numbers | Error Pilot |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 11 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Anand Raj R | 蒲艳 刘 |
In-app purchases
Numbers
No in-app purchases
Error Pilot
No in-app purchases









