Comparison

Codex Calc vs Calculator + Formula & History

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Full scientific calculator functions
  • Unit converter
  • Tip calculator
  • RPN mode
  • History tape
  • Customizable interface
  • Multiple visual themes
Features
Read full description

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.

About

Calculator + Formula & History

Features
Read full description

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

Codex Calc4 screens
Calculator + Formula & History2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Codex Calc versus Calculator + Formula & History: the parameters behind the verdict, then further details
ParameterCodex CalcCalculator + Formula & History
Price$0.99Free — better
Rating4.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size11 MB25 MB
Age rating4+4+
DeveloperDriftwood Studio Software LLCIPPEI NAGAMINE

In-app purchases

None

Codex Calc

No in-app purchases

1 purchases

Calculator + Formula & History

One-time1
  • Remove Ads$2.99

Questions

Is Codex Calc free?
Codex Calc costs $0.99, with no in-app purchases.
Is Calculator + Formula & History free?
Calculator + Formula & History is free to download, with in-app purchases available.
Do Codex Calc or Calculator + Formula & History have ads?
Calculator + Formula & History shows ads; Codex Calc does not.
Which is updated more often, Codex Calc or Calculator + Formula & History?
Codex Calc ships an update every 6 months, and Calculator + Formula & History monthly. Most recently, Codex Calc was updated on November 6, 2026 and Calculator + Formula & History on November 5, 2026.

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