K vs Montessori Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
K
This app provides a collection of interactive math tools for kindergarten through second-grade classrooms. It includes manipulatives like base 10 blocks, counters, and number lines, along with grids and a basic calculator to aid in problem-solving.
- Marker board
- Base 10 blocks (1s & 10s)
- Counters
- 10 frames
- Number line
- Addition grids
- 100s chart
- Basic calculator
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K-2 Math Tools A set of math tools to use in K-2 classrooms. No math problems are presented. Use the tools to solve problems from other contexts. The Tools include: marker board, base 10 blocks (1s & 10s), counters in several configuations, 10 frames, 10 bead rows, number line with 10-25 tick marks, 5x5 and 10x10 addition grids, a 100s chart, and a calculator with addition and subtraction only. You may choose to enlarge the size of the 5x5 Grid, the 10x10 Addition Grid, and the Calculator. When selecting a number in the grid 10x10 Addition and 5x5 Addtion charts highlight the number and its addends. The 10 Beads can be set to reverse or alternate the red/white beads. It’s not feasible to use all of the tools at one time, but the tools are draggable so multiple tools may be used at once. For example, the base 10 blocks and the marker board to illustate numbers to 99. The square counters may be shown in sets of 10, 20, or 30. As they are tapped, the center changes to a white square. The number line may be set to begin at any number (including negatives). You may show 10, 12, 15, 20, or 25 tick marks.
Montessori Math
This app teaches math concepts for children aged 3 and up, from basic preschool skills to arithmetic. It features interactive activities like the Hundred Board and Fractions, designed with Montessori principles. Audio and graphics support non-readers.
- Interactive math activities
- Montessori-inspired learning
- Covers preschool to arithmetic
- Audio and visual support
- Self-correcting activities
- Progress tracking
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Ages 3 & Up. Learn and practice mathematics, starting with basic concepts for preschoolers and progress up to learning arithmetic. We have included our most popular activities, such as the Hundred Board, Skip Counting, Fractions, and more. You can download the app for free and browse through the activities before subscribing. Preschool children who cannot read yet can still learn everything presented by use of the integrated audio and graphics. Activities included with this release: PINK TOWER - Learn to identify different sizes and follow a sequence to assemble patterns. PATTERNING - Observe and practice patterning concepts to build math readiness skills. GEOMETRIC CABINET - Learn to identify and name geometric shapes. CARDS & COUNTERS - Learn to count from 1 to 10 and understand the quantity that each number represents. HUNDRED BOARD - Count from 1 to 100 using the 10x10 Hundred Board format. HUNDRED BOARD 101-200 - Learn the concept of counting beyond 100. COUNT TO 1000! - Practice counting from 1 all the way to 1000 and practice individual sets. SKIP COUNTING - Learn to skip count using the Hundred Board by 2s, 3s, 4s, etc. HUNDRED BOARD PATTERNS - Practice your knowledge of numbers out of sequence and assemble colorful patterns with numbers. NUMBER SEQUENCING - Practice identifying numbers by finding What Comes Before, After & In-Between? FRACTIONS - Learn the concept of breaking a whole into equal parts and progress up to identifying fractions numerically. ADDITION CHARTS - Visualize the basic addition equations with charts. ADDITION TABLES - Practice the Addition Tables over and over. SUBTRACTION CHARTS - Visualize the basic subtraction equations with charts. SUBTRACTION TABLES - Practice the Subtraction Tables over and over. MULTIPLICATION CHARTS - Visualize the basic multiplication equations with charts. MULTIPLICATION TABLES - Practice the Multiplication Tables over and over. DIVISION CHARTS - Visualize the basic division equations with charts. DIVISION TABLES - Practice the Division Tables over and over. These math activities are designed for both classroom and home use. All activities are self-correcting and self-guided. You will be pleasantly surprised how much children will be able to learn and retain with this app. Our design team consists of Engineers and a former Montessori Directress, AMI certified, with over 40 years of Montessori classroom experience. We have done our best to respect the Montessori method and bring you activities that take advantage of the digital age. Thank you so much for your support and we plan to continue to add new activities to this app for expanded learning. Terms of Use & Privacy Policy can be found here: http://www.mobilemontessori.org/privacy
Screenshots
Verdict
The clearest difference is rating: K at 5.0 against Montessori Math's 3.5. K also leads on in-app purchases (none vs 2) and iOS requirement (10.0 vs 12.0). Montessori Math's advantage is ratings volume (6 vs 1) and device support (3 vs 1). On price, update cadence 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. Montessori Math sells 2 in-app purchases, starting at $3.99 per month. K asks for nothing beyond the download.
K holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: Montessori Math has 6 ratings behind it against 1, so its average is the more settled of the two.
K ships an update every 4 months, Montessori Math every 3 months. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.
| Parameter | K | Montessori Math |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.5 (6 ratings) |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | 1 | 6 — better |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 35 MB | 385 MB |
| Age rating | 4+ | 4+ |
| Developer | Classroom Focused Software | Rantek Inc. |
Customer experience
K
Montessori Math
In-app purchases
K
No in-app purchases
Montessori Math
- Montessori Math Monthly Sub.7 Days trial$3.991 Month
- Montessori Math Yearly Sub.7 Days trial$39.991 Year
Questions
Is K free?
Is Montessori Math free?
Which has better reviews, K or Montessori Math?
Do K or Montessori Math have ads?
Which is updated more often, K or Montessori Math?
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