Codex Calc vs Calculator + Formula & History
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.
Calculator + Formula & History
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A clear, easy-to-use calculator that keeps your calculation history visible. Key features • See past expressions and results • Tap a history item to reuse its result • Rotate to landscape for scientific functions • Tap the display to copy an expression or result • Turn keypad sounds on or off The free version contains ads. Complete an optional reward video for 24 hours without ads, or make the one-time Premium purchase to remove ads permanently. Check the store for your local purchase price.
Screenshots
Verdict
The clearest difference is price: Calculator + Formula & History at Free against Codex Calc's $0.99. Calculator + Formula & History also leads on update cadence (monthly vs every 6 months). Codex Calc's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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
Calculator + Formula & History is free to download; Codex Calc costs $0.99 up front. Calculator + Formula & History sells 1 one-off in-app purchase. Codex Calc asks for nothing beyond the download.
Codex Calc ships an update every 6 months, Calculator + Formula & History monthly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.
| Parameter | Codex Calc | Calculator + Formula & History |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 11 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Driftwood Studio Software LLC | IPPEI NAGAMINE |
In-app purchases
Codex Calc
No in-app purchases
Calculator + Formula & History
- Remove Ads$2.99
Questions
Is Codex Calc free?
Is Calculator + Formula & History free?
Do Codex Calc or Calculator + Formula & History have ads?
Which is updated more often, Codex Calc or Calculator + Formula & History?
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