Paper Calc Office vs Codex Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Paper Calc Office
This app functions as a large-key, four-function calculator designed for office use. It features a virtual paper tape that allows users to review, email, timestamp, and comment on calculations. Users can also retrieve numbers from the tape for new calculations and customize keyboard layouts.
- Large 4-function calculator keys
- Virtual paper tape with 250 lines
- Email and print calculation tapes
- Timestamp and comment on tape lines
- Retrieve numbers from paper tape
- Customizable keyboard layouts
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Paper Calc Office is an easy to use, large key, 4-function calculator tailored for the office environment. Use the powerful paper tape to review numbers you've entered, email, timestamp, put comments on any line, or bring a number from higher in the paper tape down into the current calculation. ================= Selected by MagicSolver for Free App Magic of the day! Selected by AppTurbo for Free "App of the Day" ! ================= Make the keys larger by sliding the LCD display up, or show more paper tape by moving the LCD display down. Two keyboards are included, or, make & save up to three of your own. PaperCalc Office Features: CALCULATOR MODE ================= > Great general purpose office calculator > Oversized +, -, x, /, = keys > 3 display formats . - fixed Point from 2-8 places . - float . - eng (power to the x3) VIRTUAL PAPER TAPE ================== > 250 lines of virtual paper tape > Full-screen view of the paper tape on the right-side scroll page. > Copy numbers or lines to the Apple clipboard > Grab numbers from the tape to use in your current calculation > Add comments to any line > Double tap the calculator's LCD display to clear the paper tape. PRINT & EMAIL ============= > Print (requires iOS4.2 & an AirPrint printer) > Email an exact copy of the paper tape EXTRAS ======= > Move the calculator's LCD display to resize the keyboard. > Create and save custom keyboard layouts to suit your personal needs. > Key click sound (on/off) > Hide rows of keys for extra paper tape space. > Options are easy-to-access in the scroll-to-left view window. > International number formatting (Settings -> General -> International -> Region Format -> select region) Q & A: ===== Q1. How does 'Office' differ from the other PaperCalc calculators? A1. 'Office' has been designed as an easy to use chain calculator with basic math functions. The emphasis is on ease-of-use and an easy-to-follow paper trail of calculations performed. Q2. How do I bring a number from the paper tape into my current calculation? A2. Touch any line of the paper tape and select the number from the menu. Q3. How can I quickly clear the paper tape? A3. Make sure the option to 'Double Tap the LCD to Clear' is ON (see the right-side scroll page). Then just double-tap the LCD display to clear the paper tape (Office Full version only) Q4. How do I use the '%' key? A4. There are two ways to use the % key: 1. Obtain the % of a number: - Press '200 % 5 =' - Answer will be '10' - PaperCalc took 5% of 200. 2. The % of a number is used in the operation on the number: - Press: '200 - 5 % =' - Answer will be '190' - PaperCalc subtracted 5% of 200 from 200 Q5. How do I customize the keyboard layout? A5. Press the large "i" (info) key. Select "Edit Keyboard Layout". Then touch and move keys to change locations. Tap keys to change sizes. Save custom keyboard layouts and rename them for later use. Q6. How do I hide the top row of keys for additional Paper Tape space? A6. Just touch and move the Calculator's LCD display until the keyboard background flashes red. Release the LCD and the keys will remain hidden. PURCHASE DETAILS . Payment will be charged to your iTunes account at confirmation of purchase. . This is a one-time purchase. TERMS AND CONDITIONS Your use of this application is governed by Interlocken Technology's Terms of Use (http://s354819480.onlinehome.us/InterlockenPrivacyPolicy/Interlocken%20Technology%20Privacy%20Policy.pdf) and Privacy Policy (http://s354819480.onlinehome.us/InterlockenPrivacyPolicy/InterlockenTechnologyTermsOfUse.pdf)
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.
Screenshots
Verdict
The clearest difference is monetization model: Paper Calc Office at free against Codex Calc's paid. Paper Calc Office also leads on rating (4.5 vs 4.0) and ratings volume (90 vs 1). Codex Calc's advantage is review sentiment (100% vs 80%). On price, ads, 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
Paper Calc Office costs $0.99 and Codex Calc $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Paper Calc Office holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Paper Calc Office has 90 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 80% of Paper Calc Office's written reviews are positive against 100% of Codex Calc's, so the app with the better star average is not the one people write more warmly about.
Paper Calc Office ships an update every 2 months, Codex Calc every 6 months. The most recent releases landed on September 12, 2026 and June 5, 2026 respectively.
| Parameter | Paper Calc Office | Codex Calc |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.5 (90 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 80.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 90 — better | 1 |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 11 MB |
| Age rating | +4 | 4+ |
| Developer | Richard Silverman | Driftwood Studio Software LLC |
Customer experience
Paper Calc Office
Codex Calc
Bugs and requests
Paper Calc Office
Reported bugs
7 issues- Info and Settings wheel closes app on iPhone
- Print function no longer working, app shuts down
- App crashes when hitting print
- Freezes and crashes when adding and editing multiple notes
- Crashes every time after iOS updates (iOS 14.2, iOS 17.4.1)
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- Email 'send' button is grayed out and not functioning
- App closes when accessing settings/info wheel
Requested features
11 requests- Add a column for references
- Add memory buttons or brackets
- More calculations before clearing tape
- iPad version
- Dark mode option
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- Ability to resize keyboard (mentioned as an advantage in a con review, but also a feature request for others)
- Fix email function
- Fix print function
- Improve speed when launching app
- Digital version of desktop paper tape calculator with large keys
- Full screen paper tape by swiping
Codex Calc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Paper Calc Office
No in-app purchases
Codex Calc
No in-app purchases









