Comparison

Number Pieces, by MLC vs SAS Math Stretch

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

Head to head
About

Number Pieces, by MLC

This app helps students grasp place value and computation with multi-digit numbers using interactive visual tools. Users can manipulate number pieces to add, subtract, multiply, and divide, fostering a deeper mathematical understanding.

Highlights
  • Manipulate ones, tens, and hundreds pieces
  • Regroup pieces (e.g., 10 ones to 1 ten)
  • Measure array dimensions with an edge piece
  • Use drawing and text tools for annotations
  • Zoom, scroll, and hide/reveal work
  • Share work via image save or share code
Features
Read full description

Number Pieces helps students develop a deeper understanding of place value while building their computation skills with multi-digit numbers. Students use the number pieces to represent multi-digit numbers, regroup, add, subtract, multiply, and divide. FEATURES • Add and manipulate pieces (ones, tens, and hundreds). • Change the starting set of pieces to a basic or an advanced set. • Join pieces in groups of ten or break them apart (e.g., 10 ones into 1 ten and vice versa). • Use the expanding edge piece like a measuring tape to show the dimensions of arrays created with the pieces. • Choose from three different colors to clearly identify groups or pieces. • Move, rotate, and duplicate pieces individually or as a group. • Use the drawing tools to label representations and show understanding. • Add equations, expressions, and descriptions with the math text and writing tools. • Zoom and scroll to work with larger collections of pieces. • Hide and reveal work with resizable covers to create your own problems and model strategies. • Share your work by saving an image or providing a share code to others. MORE APPS For more Number Pieces 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 pieces, 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 Number Pieces was made possible by a generous donation from Dr. David Moursund. 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

About

SAS Math Stretch

This app offers a variety of interactive activities designed to build elementary math skills and number sense. It covers counting, number relations, operations, and time-telling with customizable difficulty levels. Progress can be easily shared with parents and teachers.

Highlights
  • Counting and number relations activities
  • Time telling and manipulation exercises
  • Practice and quiz modes
  • Customizable difficulty levels
  • Progress sharing with parents/teachers
  • Whole numbers, fractions, and decimals support
Features
Read full description

Math Stretch provides a suite of activities for developing elementary math skills and number sense. Specifically, activities target counting, number relations and operations, and telling and manipulating time. Math Stretch activities offer both practice and quiz modes. Settings allow students, parents, and teachers to control the level of difficulty of each activity independently. Practice sessions and completed quizzes can easily be shared with parents and teachers. Math Stretch now includes whole numbers, fractions, and decimals. Customize each activity to your students’ level with settings. Activities Place Picker – Build numbers by placing the correct value in each position. Ordering Numbers – Arrange numbers in order from lowest to highest. Largest or Smallest – Find the largest or smallest number among a collection. Skip Counter – Complete number patterns of varying difficulty. Number Bonds – Complete the number bond from a selection of numbers. Number Comparison – Compare numbers (both whole numbers and fractions). Even/Odd – Sort numbers into evens and odds. Number Line – Add and subtract using a number line. Find the Time – Manipulate the hour and minute hand to display the correct time. Time Conversion –Convert time measurements to hours, minutes, and seconds. Pi – Practice building pi and see how many places you can memorize. Hundred Chart –Identify missing numbers in a chart containing numbers from 1 to 100. Math Drag-and-Drop – Count, add, and subtract using number blocks, a virtual math manipulative. Ten Grid – Count in groups of 10. Math Grid – Add and subtract using number grids. Daily Numbers – View three new numbers every day. Practice writing the word form and take a photo of the number in action. Feedback Your feedback will help shape the next release of Math Stretch. Please send questions or comments to socialinnovation@sas.com. Follow twitter.com/saseducator License Agreement Your use of this Application indicates your acceptance of the terms of the SAS Institute Inc. License Agreement for SAS® Math Stretch, linked below. If you do not agree with these terms, you are not authorized to use the Application.

Verdict

The call

The clearest difference is rating: SAS Math Stretch at 5.0 against Number Pieces, by MLC's 3.9. SAS Math Stretch also leads on review sentiment (100% vs 88%) and iOS requirement (9.1 vs 14.7). Number Pieces, by MLC's advantage is ratings volume (22 vs 1). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SAS Math Stretch holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Number Pieces, by MLC has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 88% of Number Pieces, by MLC's written reviews are positive against 100% of SAS Math Stretch's.

UpkeepUpdate frequency

Number Pieces, by MLC ships an update every 9 months, SAS Math Stretch every 10 months. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 6 level
Number Pieces, by MLC versus SAS Math Stretch: the parameters behind the verdict, then further details
ParameterNumber Pieces, by MLCSAS Math Stretch
PriceFreeFree
Rating3.9 (22 ratings)5.0 (1 ratings) — better
Positive reviews87.5% of reviews100.0% of reviews — better
Number of ratings22 — better1
Update frequencyEvery 9 months — betterEvery 10 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPad
Requires iOS14.79.1 — better
Further details — not scored
Size8 MB88 MB
Age rating4+4+
DeveloperThe Math Learning CenterSAS Institute Inc.

Customer experience

Number Pieces, by MLC

All ratings19 ratings
Positive78.9%
Neutral0.0%
Negative21.1%
Written reviews16 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

SAS Math Stretch

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Number Pieces, by MLC

No in-app purchases

None

SAS Math Stretch

No in-app purchases

Questions

Is Number Pieces, by MLC free?
Number Pieces, by MLC is free to download, with no in-app purchases.
Is SAS Math Stretch free?
SAS Math Stretch is free to download, with no in-app purchases.
Which has better reviews, Number Pieces, by MLC or SAS Math Stretch?
SAS Math Stretch is rated higher. Number Pieces, by MLC averages 3.9 out of 5 from 22 ratings, while SAS Math Stretch averages 5.0 from 1 ratings.
Do Number Pieces, by MLC or SAS Math Stretch have ads?
Neither Number Pieces, by MLC nor SAS Math Stretch shows ads.
Which is updated more often, Number Pieces, by MLC or SAS Math Stretch?
Number Pieces, by MLC ships an update every 9 months, and SAS Math Stretch every 10 months. Most recently, Number Pieces, by MLC was updated on November 1, 2026 and SAS Math Stretch on November 10, 2026.

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