Pitagorín! vs GridMaker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pitagorín!
This app assists with mathematical calculations, specifically the Pythagorean theorem and the rule of three. It has been rebuilt from the ground up for improved functionality.
- Pythagorean theorem calculation
- Rule of three calculation
- Rebuilt from scratch
- Educational tool
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App that helps you calculate the Pythagoras theorem and now also simple rule of three is been added! New version rebuilt from scratch.
GridMaker
Create precise grids for various purposes, including crafting and art. Features include customizable line colors, labeling, and image placement for analysis. Export grids as PNG, PDF, or SVG.
- Customizable grid and dot patterns
- Adjustable line weights and colors
- Row and column labeling
- Image placement for analysis
- Paint tool with custom palettes
- Export as PNG, PDF, SVG
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Create accurate grids in inches or metric to print or share as PNG, PDF or SVG. Includes Paint Tool with built-in color palettes or add colors to create unlimited custom pallets from images, live camera, color wheel, RGB or HSB codes. Place image behind any grid for analysis or artist grid method. No ads or tracking. Purchase includes 3 papers GRID, DIAGONAL, DOT: — GRID — • Set to square or rectangle grid. • Adjust grid line weight. Set grids to an exact size — perfect for knitters and crafters! Up to four line colors on a grid, special feature adds custom line colors. • Label rows & columns with numbers [1,2,3] or letters [A,B,C] and set starting corner, values, and stepping. • Label grid axes. • Place axis and label. • Add diagonal lines to split grid into half- or quarter- triangles. • Place a center-dot with adjustable placement. — DOT (ISOMETRIC) — • 5 dot styles. • Set to isometric or rectangular dot pattern. • Specify exact dot spacing, then connect dots with horizontal, vertical, and diagonal lines. • Place a center-dot anywhere on the page. • Label rows & columns with numbers [1,2,3] or letters [A,B,C]. Set starting corner. — DIAGONAL — • Adjust grid line weight. • Divide & sub-divide blocks. Add spacing between blocks, grid, and center-point. — InApp PURCHASES — Add 8 hard-to-find specialty papers. Buy any five papers (or purchase the ’All Papers Forever’ BUNDLE) to unlock all papers forever. Credit is given for every purchase so that on purchase of any fifth paper the bundle is instantly added: Hexagon Brick Log-Log & Semi-Log Polar Spider Ancestry Music Triangle (Ternary) — FEATURES OF ALL PAPERS — √ Paint Tool. Color grid. Make custom color palettes. Add annotations. √ Place an image under any grid, then adjust size and placement. √ Metric (cm or mm) and Inch settings for grid and page size. √ Choice of Print Settings for standard papers (such as 8.5x11 or A4) with adjustable margins, or set page at a custom size. √ Print or share grids as a PDF, PNG or SVG to other apps for further editing — even as templates to laser or pattern cutting machines. √ Share painted grids as a PNG or PDF. √ Work up close using pinch-n-zoom. √ Show multiple grids on a page with tiling. √ Up to four grid line colors, special feature adds custom line colors. √ Title grid with choice of font, size, bold/italic, and color. √ Place a center-point on several papers. √ Library of templates (Quick Picks) offer inspiration and a short cut to creating grids. √ Purchases work on all devices — iPhone, iPad, and iPod. Don’t see the paper or feature you need? Send an email and we’ll see what we can do!
Screenshots
Verdict
The clearest difference is rating: Pitagorín! at 5.0 against GridMaker's 3.2. Pitagorín! also leads on in-app purchases (none vs 12) and review sentiment (67% vs 52%). GridMaker's advantage is update cadence (every 3 months vs every 19 months) and ratings volume (41 vs 1). On price 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
Pitagorín! costs $0.99 and GridMaker $0.99 up front. GridMaker sells 12 one-off in-app purchases. Pitagorín! asks for nothing beyond the download.
Pitagorín! holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: GridMaker has 41 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Pitagorín!'s written reviews are positive against 52% of GridMaker's.
Pitagorín! ships an update every 19 months, GridMaker every 3 months. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.
| Parameter | Pitagorín! | GridMaker |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 5.0 (1 ratings) — better | 3.2 (41 ratings) |
| Positive reviews | 66.7% of reviews — better | 52.1% of reviews |
| Number of ratings | 1 | 41 — better |
| Update frequency | Every 19 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | — | #195 — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | Ivan Cabezon Orjales | NNN Software |
Customer experience
Pitagorín!
GridMaker
Bugs and requests
Pitagorín!
Not enough reviews yet to summarise bugs or requests.
GridMaker
Reported bugs
9 issues- Cannot erase lines
- Cannot undo basic writing/lines
- Restart needed after drawing unintended line
- Green grid stays on projects
- Text centering not working
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- Poor image quality when uploaded
- Cannot draw on grid lines, only shade squares
- In-app purchases not listed on page (historical)
- One step omitted in instructions (historical)
Requested features
21 requests- Select and colorize cells/columns/grids
- Copy feature
- Modify individual rows (horizontally and vertically)
- Substitute colors in imported pictures
- Undo/erase functionality for lines
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- Restore recently deleted grids
- Kaleidoscope function
- Random generator
- Free form constructions
- Divide grid with odd numbers
- Add left/right/top/customizable margins
- Optimize for iPad Pro
- Make half square triangles easily
- Draw lines along grid lines
- Add labels and number graphs
- Lined paper option
- Combine multiple patterns on one paper
- More line thickness and color options
- Improve text centering
- Improve drawing and editing features
- More modern feel and interface
In-app purchases
Pitagorín!
No in-app purchases
GridMaker
- Hexagon Graph Paper$0.99
- Log Graph Paper$0.99
- Polar Graph Paper$0.99
Show 9 moreShow fewer
- Ancestry Graph Paper$0.99
- Brick Graph Paper$0.99
- Spider Graph Paper$0.99
- Sheet Music Paper$0.99
- Triangle Graph Paper$0.99
- Purchase Credit$0.99
- Purchase Credit$2.99
- Purchase Credit$3.99
- Purchase Credit$4.99
Questions
Is Pitagorín! free?
Is GridMaker free?
Which has better reviews, Pitagorín! or GridMaker?
Do Pitagorín! or GridMaker have ads?
Which is updated more often, Pitagorín! or GridMaker?
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