Comparison

Tug Calc vs iBigCalc

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

Head to head
About

Tug Calc

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Tug Calc is a calculator that can be connected by sliding. It supports multiple numerical connections, direct correlation of operation results, scientific operations, and rich mathematical charts, including line charts, bar charts, pie charts, polar coordinates, etc. 【Connection Value】 Press and hold the value and drag it to other value positions to complete the connection, and the calculation results will be related to each other after connecting the values, so that you can enter multiple calculations at one time. 【Flexible Labels】 Add tags to the values, the associated values can be modified synchronously, the calculation process is easy to remember, and the operation results are defined by you. 【Rich Charts】 Rich mathematical charts are supported, including line charts, bar charts, pie charts, polar coordinates, etc. Drag and drop values to the specified area to create a new chart, and drag and drop the values to an existing chart to add a plot directly. 【Scientific Computing】 In addition to basic addition, subtraction, multiplication and division operations, the calculator also supports scientific operation mode. Including power exponential operations, logarithmic operations, trigonometric function operations, factorial operations, integer operations, etc. 【Convenient Keyboard】 The software has a built-in convenient computer keyboard, which is tailor-made for calculus, and can quickly complete the calculation and calculation input. 【File Management】 Support operation file management, different operations are saved separately, and the historical record is convenient for backtracking. 【Snapshot Export】 Support program snapshot export, the calculation process is clear at a glance, easy to share, and the results are presented in seconds. 【Paid Membership Features】 - Computing file management - Increased number of cards available - Increased number of available charts 【Activate Paid Membership】 Paid members are available as a subscription or as a permanent activation Membership Service Agreement: https://tugcalc-serviceagreement.mysxl.cn/

About

iBigCalc

Features
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Elevate your daily calculations with the Simple and Smart Calculator. Designed for those who value efficiency and clarity, our app provides a seamless experience for all your mathematical needs. Whether you’re a student, professional, or just need to split a bill, our intuitive interface ensures you get accurate results instantly without any unnecessary clutter. Key Features: + Clean UI: A minimalist design that stays out of your way. + Smart History: Easily track and reuse your previous calculations. + Precision & Speed: Fast processing for both basic and complex math. Simple to use, smart in performance. Download now and make math effortless!

Screenshots

Tug Calc4 screens
iBigCalc4 screens

Verdict

The call

The clearest difference is in-app purchases: iBigCalc at none against Tug Calc's 4. Tug Calc's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). On price 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

Both are free to download. Tug Calc sells 4 in-app purchases, starting at $0.99 per month. iBigCalc asks for nothing beyond the download.

UpkeepUpdate frequency

Tug Calc ships an update every 5 days, iBigCalc every 3 weeks. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 1 level
Tug Calc versus iBigCalc: the parameters behind the verdict, then further details
ParameterTug CalciBigCalc
PriceFreeFree
Update frequencyEvery 5 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS13.0 — better17
Further details — not scored
Size54 MB5 MB
Age rating4+4+
Developer嘉欣 胡Manh Phi Nguyen

In-app purchases

4 purchases

Tug Calc

Subscriptions3
  • Monthly Subscriptions$0.991 Month
  • Quarterly Subscriptions$0.993 Months
  • Annual Subscription$2.991 Year
One-time1
  • Perpetual Subscription$4.99
None

iBigCalc

No in-app purchases

Questions

Is Tug Calc free?
Tug Calc is free to download, with in-app purchases available.
Is iBigCalc free?
iBigCalc is free to download, with no in-app purchases.
Do Tug Calc or iBigCalc have ads?
iBigCalc shows ads; Tug Calc does not.
Which is updated more often, Tug Calc or iBigCalc?
Tug Calc ships an update every 5 days, and iBigCalc every 3 weeks. Most recently, Tug Calc was updated on October 13, 2026 and iBigCalc on October 16, 2026.

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