Comparison

FlashToPass vs Number Line

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Interactive math flashcards
  • Addition practice (free)
  • Customizable card sets
  • Printable exports
  • Modern design with dark mode
  • Practice by number and difficulty
Features
Read full description

Help your child master math facts fast. FlashToPass: Math Flash Cards is a simple, effective way for kids to practice addition, subtraction, multiplication, and division. Designed for elementary students, this app builds speed and accuracy using proven flashcard learning techniques. Create and print custom math worksheets and flash cards for extra practice (*). Perfect for kids ages 6–10, homeschool practice, and daily math fact drills. This app helps your student master math facts! Features an all-new modern design. No ads. Addition card sets come completely free. Other card sets, customized sets, and printable exports may require in-app purchases. - Why Master Math Facts? - Mastery of math facts is essential for success in math. When students know their math facts quickly and accurately, they can focus on learning new concepts instead of struggling with basic calculations. Building strong math fact skills improves confidence, speed, and long-term academic success. - About The New 2.0 Update - To celebrate more than 10 years on the App Store, we've built a new feature we know you'll love - printable exports! Printable exports allow you to export custom practice sheets and flash card sheets in a format that can be easily printed. You can even print straight from the app, if you have an AirPrint® printer already set up. We also added the ability to create custom card sets. And you can still use any of the built-in card sets to practice by number or difficulty. Please support the development of this app by unlocking the premium features (*). - Key Features - - NEW! Sleek modern design. - NEW! Printable worksheets and flash card exports for offline practice (*) - NEW! Support for dark mode. - NEW! Custom card sets. (*) - Practice addition math facts completely free. - Times tables practice to build multiplication speed. (*) - Other operations such as subtraction, multiplication, division - and certain card sets - may require in-app purchases. (*) - Practice by number. (*) - Practice by difficulty. (*) - Captivating sound effects and animations! - Simple and easy to use math learning app for kids, teenagers and adults. - Learn addition, subtraction, multiplication and division from math fact sheets. - Effective flashcards learning technique for students. - Great supplement for home school! - Perfect for homework, extra practice, and homeschool use (*) Download FlashToPass: Math Flash Cards today and start building math fact mastery. - Support - Questions, comments, or bugs? Please contact us via our website using the form at http://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 http://www.scybot.com/privacy.pdf - Terms of Use - Please refer to http://www.scybot.com/terms.html - Subscription - An annual auto-renewing in-app purchase subscription is required to access certain features. As long as your subscription is active, it unlocks all flash cards sets, customized card sets, printable exports, and all other premium features in the app. An annual purchase amount will be applied to your iTunes account on confirmation of the auto-renewing subscription. Subscriptions will automatically renew unless canceled within 24-hours before the end of the current period. You can cancel anytime with your iTunes account settings. Deleting the app will not cancel the subscription. You can manage the subscription in your iTunes account settings. * Some features require in-app purchases.

About

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.

Highlights
  • 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 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

FlashToPass4 screens
Number Line1 screens

Verdict

The call

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 2) and review sentiment (100% vs 67%). FlashToPass's advantage is ratings volume (923 vs 4) 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. FlashToPass sells 2 in-app purchases, starting at $0.99 per year. Number Line asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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 923 ratings behind it against 4, 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.

UpkeepUpdate frequency

FlashToPass ships an update every 4 months, Number Line every 15 months. The most recent releases landed on September 26, 2026 and September 20, 2026 respectively.

Scorecard7 real differences · 3 level
FlashToPass versus Number Line: the parameters behind the verdict, then further details
ParameterFlashToPassNumber Line
PriceFreeFree
Rating4.4 (923 ratings)5.0 (4 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings923 — better4
Update frequencyEvery 4 months — betterEvery 15 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.013.0 — better
Further details — not scored
Size3 MB16 MB
Age rating4+4+
DeveloperScybot Technologies, L.L.C.Blastoff Design

Customer experience

FlashToPass

All ratings923 ratings
Positive85.0%
Neutral6.4%
Negative8.6%
Written reviews96 reviews
Positive66.7%
Neutral11.5%
Negative21.9%

Number Line

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

2 purchases

FlashToPass

Subscriptions1
  • Unlock All Features$0.991 Year
One-time1
  • Lifetime Unlock$4.99
None

Number Line

No in-app purchases

Questions

Is FlashToPass free?
FlashToPass is free to download, with in-app purchases available.
Is Number Line free?
Number Line is free to download, with no in-app purchases.
Which has better reviews, FlashToPass or Number Line?
Number Line is rated higher. FlashToPass averages 4.4 out of 5 from 923 ratings, while Number Line averages 5.0 from 4 ratings.
Do FlashToPass or Number Line have ads?
Neither FlashToPass nor Number Line shows ads.
Which is updated more often, FlashToPass or Number Line?
FlashToPass ships an update every 4 months, and Number Line every 15 months. Most recently, FlashToPass was updated on September 26, 2026 and Number Line on September 20, 2026.

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