FlashToPass vs Number Line, by MLC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlashToPass
Master math facts with interactive flashcards. Reinforce concepts, practice addition for free, and unlock more operations and customization through in-app purchases. Supports dark mode and offers printable exports.
- Interactive math flashcards
- Addition practice (free)
- Customizable card sets
- Printable exports
- Modern design with dark mode
- Practice by number and difficulty
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Help your child master math facts and times tables. FlashToPass: Math Flash Cards is a simple, effective way for kids to practice addition, subtraction, multiplication, and division. Version 3.0 is a complete rebuild with a fresh design, live races with friends, voice answers, camera grading for printed worksheets, and an Apple Watch app. The Mac app is now included too. Made for kids ages 6 to 8 and for anyone still building fact fluency, at home, in homeschool, or as a classroom supplement. No ads, no accounts, no tracking. Addition card sets are completely free, and so is printing. - Practice Their Way - - Type answers on a big, kid-friendly keypad. - Say answers out loud: turn on Listen and the card fills the screen. - Turn on Speak and the app reads each problem aloud. - Drill the times tables by number, 1 through 12, or practice by difficulty. - Build custom card sets for exactly the facts your child needs. - Pick up where you left off, and set practice reminders to build a daily habit. - Race Your Friends - Compete in live head-to-head races over local Wi-Fi: two kids at the kitchen table, or a whole classroom at once. Everyone gets the same cards, and the results screen shows who finished first. Joining a race is always free. - Paper, Too - Print practice sheets or cut-out flash cards for any operation and number range, on US Letter or A4, with an optional answer key and name and score lines on the page. Printing is free for everyone. When the finished sheet comes back, point your camera at it. FlashToPass reads the QR code, recognizes the handwriting, and marks each answer. Grading happens on your device, and nothing is uploaded. - iPhone, iPad, Mac, and Apple Watch - One app runs on all of them, and your purchase covers every device. On Apple Watch, kids answer with the Digital Crown. - Key Features - - NEW! Live head-to-head races over local Wi-Fi. Joining is always free. (*) - NEW! Scan & Grade: camera grading for printed practice sheets. (*) - NEW! Voice answers in 12 languages, plus a read-aloud mode. - NEW! Apple Watch app with Digital Crown input. - NEW! The Mac app is now included. - NEW! Completely redesigned, with sidebar layouts on iPad. - NEW! Free printing for everyone: worksheets and flash card sheets for any set. Print with AirPrint®. - Practice addition math facts completely free. - Times tables practice to build multiplication speed. (*) - Subtraction, multiplication, and division card sets. (*) - Practice by number or by difficulty. (*) - Custom card sets. (*) - Practice reminders, dark mode, sound effects, and animations. Download FlashToPass: Math Flash Cards today and start building math fact mastery. - Support - Questions, comments, or bugs? Please contact us using the form at https://www.scybot.com/BugReport.php. - Miscellaneous - AirPrint® is a registered trademark of Apple Inc., registered in the U.S. and other countries. - Privacy Policy - Please refer to https://www.scybot.com/flashtopass-privacy.pdf - Terms of Use - Please refer to https://www.scybot.com/terms.html - Plans - Choose Yearly, Monthly, or Lifetime. Each plan unlocks every flash card set, custom card sets for every operation, hosting races with any operation, Scan & Grade score totals, and watermark-free printing. Yearly and Monthly are subscriptions. Lifetime is a one-time purchase, not a subscription. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless you cancel at least 24 hours before the period ends. Manage or cancel subscriptions in your Apple Account settings. Deleting the app does not cancel a subscription. * Some features require an in-app purchase.
Number Line, by MLC
This app allows students to visualize number sequences and demonstrate mathematical strategies. It supports various number types and offers tools for annotation, problem-solving, and sharing work. Ideal for elementary classrooms and iPad learning environments.
- Visualize number sequences
- Demonstrate counting, adding, subtracting, multiplying, dividing
- Use whole numbers, fractions, decimals, or negative numbers
- Add custom tick marks and labels
- Hide and reveal numbers and jumps
- Annotation and drawing tools
- Save and share work
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Number Line helps students visualize number sequences and demonstrate strategies for counting, comparing, adding, subtracting, multiplying, and dividing. Choose number lines labelled with whole numbers, fractions, decimals, or negative numbers. Or use a blank number line, with or without tick marks. Describe intervals between points on the line using forward or backward jumps above and below the line. Jumps can be labelled with their values or left blank. Add custom tick marks to the number line to show equivalence or compare number values. Show strategies with drawing and annotation tools. Hide elements of the sequence shown on the number line, which challenges students to use what they know about number relationships and computation to identify those missing elements. This virtual number line is an open-ended educational tool, ideal for elementary classrooms and other learning environments that use iPads. For more Number Line resources and other apps, visit: www.mathlearningcenter.org/apps FEATURES • Mark the number line with multiples of whole numbers, fractions, or decimals. In addition, set the starting value of the line, including using negative values. • Add and manipulate forward and backward jumps, above or below the line. • Label jump bars, manually or automatically, to show intervals or hide labels altogether. • Add custom tick marks and values to blank number lines. • Hide and reveal numbers on the number line. • Hide and reveal jumps, numbers, and other elements with resizable covers to create your own problems and model strategies. • Use the drawing tools to annotate work and show understanding. • Add equations, expressions, and descriptions with the math text and writing tools. • Share your work by saving an image or providing a share code to others. MORE APPS For more Number Line resources and other apps, visit: www.mathlearningcenter.org/apps LEARN MORE To learn about Bridges in Mathematics, an elementary curriculum that employs visual models like number line, visit: www.mathlearningcenter.org/bridges/overview ABOUT US This resource is brought to you by The Math Learning Center, a nonprofit organization dedicated to K-12 education since 1976. ACKNOWLEDGEMENTS This app was crafted by Clarity Innovations. We help improve teaching and learning by creating solutions that match promising technologies with the needs of education. Visit us: www.clarity-innovations.com
Screenshots
Verdict
The clearest difference is in-app purchases: Number Line, by MLC at none against FlashToPass's 3. Number Line, by MLC also leads on iOS requirement (16.1 vs 26.0). FlashToPass's advantage is ratings volume (931 vs 15) and update cadence (every 4 months vs every 13 months). On price, rating, review sentiment and ads 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
Both are free to download. FlashToPass sells 3 in-app purchases, starting at $1.99 per month. Number Line, by MLC asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.4 for FlashToPass against 4.4 for Number Line, by MLC. That said, the two scores are not equally well evidenced: FlashToPass has 931 ratings behind it against 15, so its average is the more settled of the two. Written reviews split almost evenly too, at 67% and 67% positive.
FlashToPass ships an update every 4 months, Number Line, by MLC every 13 months. The most recent releases landed on October 31, 2026 and October 9, 2026 respectively.
| Parameter | FlashToPass | Number Line, by MLC |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (931 ratings) — better | 4.4 (15 ratings) |
| Positive reviews | 66.7% of reviews | 66.7% of reviews |
| Number of ratings | 931 — better | 15 |
| Update frequency | Every 4 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch — better | iPad |
| Requires iOS | 26.0 | 16.1 — better |
| Further details — not scored | ||
| Size | 21 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Scybot Technologies, L.L.C. | The Math Learning Center |
Customer experience
FlashToPass
Number Line, by MLC
Bugs and requests
FlashToPass
Reported bugs
4 issues- Crashes when entering answers
- Timer not working as expected
- Compatibility issues with iOS updates
- Keyboard disappearing during use
Requested features
5 requests- Allow setting number of questions
- Add more difficulty levels
- Include doubles facts practice
- Provide detailed performance tracking
- Improve keyboard layout and functionality
Number Line, by MLC
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FlashToPass
- All Features, Monthly$1.991 Month
- Unlock All Features$4.991 Year
- Lifetime Unlock$9.99
Number Line, by MLC
No in-app purchases
Questions
Is FlashToPass free?
Is Number Line, by MLC free?
Which has better reviews, FlashToPass or Number Line, by MLC?
Do FlashToPass or Number Line, by MLC have ads?
Which is updated more often, FlashToPass or Number Line, by MLC?
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