Comparison

Codex Calc vs 小灵龙App

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

小灵龙App

This app provides comprehensive mobile services for campus cards, including traditional card functions like consumption and authentication, enhanced with QR code capabilities. It offers features for managing your campus card, paying various campus fees, and booking campus facilities.

Highlights
  • Campus card management
  • QR code functionality
  • Campus fee payments
  • Facility booking
  • Card application and registration
Read full description

【小灵龙】是一款面向校园的一卡通服务APP,在传统卡消费、认证的基础上增加了二维码功能,为校园用户提供专业、全面的移动一卡通服务。 【校园卡管理】 提供全面的校园卡服务,充值、信息查询、账单查询、流水查询、挂失/解挂、失卡招领、校园卡在线申请、校友注册等 【校园缴费】 项目缴费、电费、网费、辅修费、等级考试费、党团费、培训费、学费 【校园预订】 为校内餐厅、场馆、会议室、自习室等场所提供预订服务

Screenshots

Codex Calc4 screens
小灵龙App3 screens

Verdict

The call

The clearest difference is review sentiment: Codex Calc at 100% against 小灵龙App's 33%. Codex Calc also leads on rating (4.0 vs 1.0) and ads (none vs shown). 小灵龙App's advantage is price (Free vs $0.99) and update cadence (monthly vs every 6 months). On 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

CostPrice · In-app purchases · Ads · Monetization

小灵龙App is free to download; Codex Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Codex Calc holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: 小灵龙App has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Codex Calc's written reviews are positive against 33% of 小灵龙App's.

UpkeepUpdate frequency

Codex Calc ships an update every 6 months, 小灵龙App monthly. The most recent releases landed on June 5, 2026 and September 22, 2026 respectively.

Scorecard8 real differences · 2 level
Codex Calc versus 小灵龙App: the parameters behind the verdict, then further details
ParameterCodex Calc小灵龙App
Price$0.99Free — better
Rating4.0 (1 ratings) — better1.0 (12 ratings)
Positive reviews100.0% of reviews — better33.3% of reviews
Number of ratings112 — better
Update frequencyEvery 6 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.09.0 — better
Further details — not scored
Size11 MB157 MB
Age rating4+4+
DeveloperDriftwood Studio Software LLC北京新中新诚通信息技术股份有限公司

Customer experience

Codex Calc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

小灵龙App

All ratings12 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews24 reviews
Positive33.3%
Neutral4.2%
Negative62.5%

In-app purchases

None

Codex Calc

No in-app purchases

None

小灵龙App

No in-app purchases

Questions

Is Codex Calc free?
Codex Calc costs $0.99, with no in-app purchases.
Is 小灵龙App free?
小灵龙App is free to download, with no in-app purchases.
Which has better reviews, Codex Calc or 小灵龙App?
Codex Calc is rated higher. Codex Calc averages 4.0 out of 5 from 1 ratings, while 小灵龙App averages 1.0 from 12 ratings.
Do Codex Calc or 小灵龙App have ads?
小灵龙App shows ads; Codex Calc does not.
Which is updated more often, Codex Calc or 小灵龙App?
Codex Calc ships an update every 6 months, and 小灵龙App monthly. Most recently, Codex Calc was updated on June 5, 2026 and 小灵龙App on September 22, 2026.

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