FlashToPass vs Number Line
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
Read full descriptionHide full description
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
This app provides an interactive number line for educational purposes, enabling users to visualize numbers, perform various math games, and practice rounding. Its simple interface supports zooming, swiping, and marking numbers with pins or freehand drawing.
- Infinite number line visualization
- Rounding practice (nearest 10, 100, 10,000)
- Number comparison
- Pinch-to-zoom functionality
- Swipe navigation
- Search for specific numbers
- Pin marking
- Freehand drawing tool
Read full descriptionHide full description
An infinite number line to use in the classroom, with a simple design that allows for numerous maths games and challenges! • Ask the class to round to the nearest 10/100/10,000. • Visualise the size of numbers relative to one another, including negatives. How to use: • Zoom with a pinch • Swipe along the number line • Go to a number by typing in the search box • Drag and drop pins to mark numbers • Draw free-hand with the pen tool
Screenshots
Verdict
The clearest difference is rating: Number Line at 5.0 against FlashToPass's 4.4. Number Line also leads on in-app purchases (none vs 3) and review sentiment (100% vs 67%). FlashToPass's advantage is ratings volume (934 vs 5) and update cadence (every 4 months vs every 15 months). On price, ads 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
Both are free to download. FlashToPass sells 3 in-app purchases, starting at $1.99 per month. Number Line asks for nothing beyond the download.
Number Line holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: FlashToPass has 934 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 67% of FlashToPass's written reviews are positive against 100% of Number Line's.
FlashToPass ships an update every 4 months, Number Line every 15 months. The most recent releases landed on November 13, 2026 and November 3, 2026 respectively.
| Parameter | FlashToPass | Number Line |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (934 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 934 — better | 5 |
| Update frequency | Every 4 months — better | Every 15 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Scybot Technologies, L.L.C. | Blastoff Design |
Customer experience
FlashToPass
Number Line
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
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
No in-app purchases
Questions
Is FlashToPass free?
Is Number Line free?
Which has better reviews, FlashToPass or Number Line?
Do FlashToPass or Number Line have ads?
Which is updated more often, FlashToPass or Number Line?
Other comparisons















