Codex Calc vs Calculate Note
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Codex Calc
This app offers a powerful yet intuitive calculator experience with a variety of modes including scientific, unit conversion, and tip calculation. It features a customizable interface and a detailed history tape for all your calculations.
- Full scientific calculator functions
- Unit converter
- Tip calculator
- RPN mode
- History tape
- Customizable interface
- Multiple visual themes
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Codex Calc is the calculator for the rest of us: easy and intuitive, without sacrificing power and capabilities. Calculator • Unit Converter • Tip Calculator • RPN Mode • Full Scientific • History Tape All the power you need, wrapped in a beautifully designed interface that's simple without being simplistic. ADAPTS TO YOU Do you like big buttons, or small? Like minimalist interfaces, or are you a fan of bright and flashy? Prefer small fonts to see more detail, or big text and easy to read buttons? Codex Calc adapts itself to the way *you* like to work. FEATURES Everything you'd expect, plus: • History tape records all entries and calculations • Full suite of standard and scientific calculator functions • Unit conversion mode for forward and reverse conversions • Full tip calculator mode - taxes, tip, per-person amounts • RPN mode fully integrated • Rotation lock and sound on/off toggles • Seven different professionally designed visual themes • Multi-number memory and full set of memory-store operators • Full control over history tape font size • Single and multiple-line history tape formats • Large and small button sizes • Settings for customization (number formatting, behavior of clear key, display of calculation details, much more) Calculations: • Trig functions in degrees and radians • Log and power/exponentials • Scientific notation / exponent mode • Rounding and truncating • Random number generation • Parenthesis and sub-expressions ...and more! INTUITIVE TOUCH INTERFACE Take full advantage of your device's capabilities: • Overlays - rather than making buttons smaller to fit more, Codex Calc uses intuitive overlays on the existing buttons. • Popup Menus - hidden until you need them, pop-up context menus give you more power when the default action isn't quite what you need. • Zoomable History Tape - Tap the history tape to expand for more detail, change the font size, copy contents to clipboard, or forward as an email. View as single-lines to save space, or use multi-line view for more detail. • Multiple Flexible Layouts - Portrait and landscape, large and small buttons, and seven different graphical themes. • Easy-Touch Everything - Codex Calc's entire design approach revolves around "touch to activate." Tap the tape to see it bigger, swipe to scroll, long-press a button for more options, tap the display to copy or paste, etc.
Calculate Note
This calculator app records all your calculations with customizable names and comments. Easily find past calculations and share your notes directly with others. It helps you keep track of your financial entries beyond just numbers.
- Records all calculations
- Customizable calculation names
- Add comments to calculations
- Quickly find calculation notes
- Share calculation notes
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Calculate Note is more than just a calculator — it's your personal calculation notebook that automatically records every calculation you make. Never lose track of your numbers again. Whether you're splitting a restaurant bill, calculating shopping discounts, managing household expenses, or figuring out tips, every calculation is saved with a name and timestamp for easy reference. KEY FEATURES: • Automatic Calculation History — Every calculation is recorded automatically • Custom Names — Name each calculation (defaults to date) for easy identification • Quick Search — Find any past calculation instantly • Share Directly — Export and share calculation notes with friends and family • Tip Calculator — Built-in tip sharing for restaurants and group dining • Smart Notes — Add comments and notes to any calculation Perfect for everyday use: shopping lists, budget tracking, expense sharing, tip calculations, and more. Download now and transform the way you calculate!
Screenshots
Verdict
The clearest difference is review sentiment: Codex Calc at 100% against Calculate Note's 0%. Codex Calc also leads on rating (4.0 vs 1.0) and ads (none vs shown). Calculate Note's advantage is price (Free vs $0.99). On ratings volume, in-app purchases and device support 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
Calculate Note is free to download; Codex Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Codex Calc holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 100% of Codex Calc's written reviews are positive against 0% of Calculate Note's.
Codex Calc ships an update every 6 months, Calculate Note every 18 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Codex Calc | Calculate Note |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 months — better | Every 18 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 11 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Driftwood Studio Software LLC | CHI HAO CHIU |
Customer experience
Codex Calc
Calculate Note
In-app purchases
Codex Calc
No in-app purchases
Calculate Note
No in-app purchases









