Growth · alternatives · 2026
24 alternatives to MathNotes: Calculator Notes
Notes that calculate: type = for answers. Units, equations.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
I launched NumPad v1 on here a few years ago, and back then it wasn't much more than a thin CodeMirror wrapper around the calculator engine I'd written. Now I've rewritten it as a PWA that supports multiple documents, persists them to IndexedDB, and has a syncing service for paying customers. Syncing is handled by Automerge[1] under the hood, which should make it relatively easy to get document sharing working too. [1] https://automerge.org/
2022 · numpad.io · its alternatives →
- 2
CalcMate▲88calculate numbers, dates, units within notes
2023 · accounts.google.com · its alternatives →
- 3CA
2021 · mkhan45.github.io · its alternatives →
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A free-form calculator for Chrome
2022 · chromewebstore.google.com · its alternatives →
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- 8
Tool to calculate how convertible notes will convert
2016 · equidam.com · its alternatives →
- 9
Your private Notion-style workspace - no login, no cloud
2025 · binarydecimal.com · its alternatives →
- 10
For All Type of Online Calculations & Metric Conversions.
2022 · easyunitconverter.com · its alternatives →
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- 14
Finance, health, math, unit converters & more — free tools.
May 2026 · calculatorjunction.com · its alternatives →
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Calq.dev▲7Free online calculators for everyday math and planning
Nov 2025 · calq.dev · its alternatives →
- 17
calculate.at▲12200+ free calculators. No signup, no clutter.
Jul 2026 · calculate.at · its alternatives →
- 18
200+ free calculators for finance, health & math
Jun 2026 · calculator-pro.org · its alternatives →
- 19
Unitrics▲8Offline unit conversions for engineers, students, and pros
2024 · play.google.com · its alternatives →
- 20
Add, subtract, multiply, divide & simplify fractions online
2025 · studyhub.net.in · its alternatives →
- 21
We launched Mathematical Calculator
2025 · mathematicalcalculator.com · its alternatives →
- 22
Notability with a full AI-Powered STEM toolkit
Jan 2026 · apps.apple.com · its alternatives →
- 23
Simple, fast, reliable unit conversion.
2022 · conversioncalculator.net · its alternatives →
- 24
Add, Subtract, Multiply, & Divide, in Seconds
2025 · basiccalculator.org · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →