Comparison

FlashToPass vs Number Line, by MLC

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, 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.

Highlights
  • 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
Features
Read full description

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

FlashToPass4 screens

Verdict

The call

The clearest difference is in-app purchases: Number Line, by MLC at none against FlashToPass's 2. Number Line, by MLC also leads on iOS requirement (16.1 vs 26.0). FlashToPass's advantage is ratings volume (923 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

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, by MLC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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 923 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.

UpkeepUpdate frequency

FlashToPass ships an update every 4 months, Number Line, by MLC every 13 months. The most recent releases landed on September 21, 2026 and June 7, 2026 respectively.

Scorecard5 real differences · 5 level
FlashToPass versus Number Line, by MLC: the parameters behind the verdict, then further details
ParameterFlashToPassNumber Line, by MLC
PriceFreeFree
Rating4.4 (923 ratings)4.4 (15 ratings)
Positive reviews66.7% of reviews66.7% of reviews
Number of ratings923 — better15
Update frequencyEvery 4 months — betterEvery 13 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — betteriPad
Requires iOS26.016.1 — better
Further details — not scored
Size3 MB7 MB
Age rating4+4+
DeveloperScybot Technologies, L.L.C.The Math Learning Center

Customer experience

FlashToPass

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

Number Line, by MLC

All ratings15 ratings
Positive86.7%
Neutral0.0%
Negative13.3%
Written reviews12 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

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

2 purchases

FlashToPass

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

Number Line, by MLC

No in-app purchases

Questions

Is FlashToPass free?
FlashToPass is free to download, with in-app purchases available.
Is Number Line, by MLC free?
Number Line, by MLC is free to download, with no in-app purchases.
Which has better reviews, FlashToPass or Number Line, by MLC?
FlashToPass and Number Line, by MLC are both rated 4.4 out of 5 on the App Store, from 923 and 15 ratings respectively.
Do FlashToPass or Number Line, by MLC have ads?
Neither FlashToPass nor Number Line, by MLC shows ads.
Which is updated more often, FlashToPass or Number Line, by MLC?
FlashToPass ships an update every 4 months, and Number Line, by MLC every 13 months. Most recently, FlashToPass was updated on September 21, 2026 and Number Line, by MLC on June 7, 2026.

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