HiMemo vs CalibratedNotes
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
HiMemo
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For example, information that has a hierarchical structure, such as information linked to regions or division of organization, that is, information that has multiple children dangling from a parent and overlaps with grandchildren and grandchildren. Is unexpectedly large. Usually, such information is recorded in a memo application in bullet points, but adding and editing information is surprisingly troublesome, and there was a problem that the hierarchical relationship collapses if careless. With HiMemo, you can record information hierarchically with simple operations, and you can also add or modify. It is also possible to export to other apps and SNS in a tree view mode that gives a bird's eye view of the whole, or in plain text format or HTML format.
CalibratedNotes
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CalibratedNotes Capture ideas, solve problems, and organize everything in one powerful digital notebook. CalibratedNotes combines the freedom of handwriting with intuitive organization to help you take better notes. Whether you're recording lecture notes, solving mathematical equations, sketching engineering concepts, or planning projects, CalibratedNotes provides a clean, distraction-free workspace designed to keep you focused. Create notebooks for school, work, or personal use, customize your pages, and keep everything organized exactly the way you want. Write Naturally Enjoy a responsive handwriting experience with adjustable pen sizes, multiple ink colors, a highlighter, and an eraser. Every tool is designed to make writing feel comfortable, whether you're taking quick notes or filling pages with detailed calculations and sketches. Stay Organized Create unlimited notebooks, organize them into folders, customize notebook colors, and quickly switch between subjects or projects. As your collection grows, finding your notes remains simple and efficient. Custom Page Templates Choose the page layout that fits your work. Select from blank, lined, dotted, graph, and grid paper for everything from lecture notes to engineering drawings, mathematical calculations, bullet journals, and project planning. Handwriting & Text Combine handwritten notes with movable text boxes to create organized, professional-looking pages. Easily add mathematical and scientific symbols whenever you need them. Draw and Sketch Create engineering diagrams, graphs, charts, flowcharts, geometric figures, scientific illustrations, and technical sketches directly within your notebooks. Keep drawings and written notes together for a more organized workflow. Built for STEM CalibratedNotes makes it easy to organize engineering calculations, mathematical equations, scientific notes, laboratory observations, and technical diagrams in one place. Perfect for documenting complex ideas while keeping everything neat and easy to review. Flexible Pages Add, duplicate, and delete pages whenever you need. Whether you're writing a single page or an entire semester's worth of notes, your notebooks grow with your ideas. Customize Your Workspace Personalize notebook colors, organize folders your way, and choose page templates that match your workflow. CalibratedNotes adapts to your style instead of forcing you into a fixed layout. Features Writing Smooth handwriting Adjustable pen sizes Multiple pen colors Highlighter tool Eraser tool Organization Unlimited notebooks Unlimited pages Folder organization Custom notebook colors Fast notebook navigation Page Templates Blank paper Lined paper Dotted paper Graph paper Grid paper Productivity Movable text boxes Mathematical symbols Scientific symbols Duplicate pages Delete pages Drawing Engineering diagrams Graphs and charts Flowcharts Technical sketches Scientific illustrations Geometric drawings Whether you're taking notes in class, solving equations, sketching ideas, planning projects, or organizing your daily tasks, CalibratedNotes provides a flexible workspace designed to help you write naturally and keep everything in one place. Download CalibratedNotes today and experience a smarter way to write, organize, and create. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: HiMemo at none against CalibratedNotes's 1. HiMemo also leads on iOS requirement (13.0 vs 15.0). CalibratedNotes's advantage is update cadence (every 2 days vs every 19 months). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. CalibratedNotes sells 1 in-app purchase, starting at $2.99 per month. HiMemo asks for nothing beyond the download.
HiMemo ships an update every 19 months, CalibratedNotes every 2 days. The most recent releases landed on September 22, 2026 and September 12, 2026 respectively.
| Parameter | HiMemo | CalibratedNotes |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 19 months | Every 2 days β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 30 MB | 50 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroyuki Kawai | AIDEN JASON SEXTON |
In-app purchases
HiMemo
No in-app purchases
CalibratedNotes
- CalibratedNotes Premium7 Days trial$2.991 Month









