Comparison

StemFox Scientific Calculator vs SEC Heat Transfer

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

Head to head
About

StemFox Scientific Calculator

Streamline complex STEM calculations with a powerful calculator, textbook equation solver, and comprehensive unit converter. Designed for engineers, it reduces busywork and improves accuracy for homework and technical tasks.

Highlights
  • Advanced scientific calculator with 80+ functions
  • Textbook equation solver for any variable
  • Searchable equation database by chapter
  • Fast table lookup with linear interpolation
  • Comprehensive unit converter with 300+ conversions
  • Copy and paste functionality for values and equations
Features
Read full description

Become a better engineer! Stop wasting your time on pointless busy work! Complete your calculations more quickly and accurately. Designed by an engineer, for engineers, StemFox has all the tools you need: Calculator STEM homework is technical and demanding. Accordingly, StemFox includes a calculator able to handle the most complex equations. From trigonometry to Bessel functions, StemFox has you covered! ・More than 80 mathematical functions. ・Quick reference to common basic scientific functions and operators. ・Quickly and easily copy and paste values. ・Quickly reference calculations in all parts of the app. ・Reference previous calculations via the ans(x) method. ・Prettyprint formatting of calculations. Textbook Companions Homework is an important portion of education. Entering equations into your calculator is not. Yet, this tedious error prone activity takes up a significant portion of homework time. Enter StemFox Textbook Companions. Textbook Companions contain references to a textbook’s equations and tables. Equations: ・Equations are referenced by number and name/description. ・Equations are searchable and divided into chapters for quick reference. ・Equations are solvable for any variable. Enter the known variables, and solve for the unknown one. ・Avoid error prone calculator entry. ・Avoid the errors and tedium of entering variables multiple times in the same equation. ・Decreases calculation time by as much as 90% over entering the entire formula yourself! Tables: ・Quickly lookup table values. ・Fast, easy, accurate, table linear interpolation. ・Copy and paste values with a simple tap, no transcription errors! Yay! Unit Converter Unit conversion is a common STEM activity. To speed up this irritating activity, StemFox offers the most comprehensive scientific unit converter available! ・More than two dozen separate units and nearly 300 individual conversions available. ・Tap to copy, tap to paste. Terms of Use: http://stemfox.io/index.php/eula/ Privacy Policy: http://stemfox.io/index.php/privacy-policy/

About

SEC Heat Transfer

Features
Read full description

S.E.C. mobile app brings you a new and pleasant heat transfer experience! You can enjoy and access S.E.C. mobile app at anywhere and anytime. Main feature: 1. Order Tracking Be up to date with the latest order tracking 2. Temperature monitoring system Real time control and monitor of heat machine temperature Set the temperature range in minimum and maximum value Push message as alert function when the heat machine temperature is out of the range 3. Heat Transfer Specification Free download of S.E.C. heat transfer specification with the related product 4. Air Pressure Calculator Calculate the correct heat-press pressure 5. What's New Receive the latest news and promotions

Screenshots

StemFox Scientific Calculator4 screens
SEC Heat Transfer3 screens

Verdict

The call

The clearest difference is in-app purchases: SEC Heat Transfer at none against StemFox Scientific Calculator's 6. On price, update cadence, ads 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

Both are free to download. StemFox Scientific Calculator sells 6 in-app purchases, starting at $2.99 per month. SEC Heat Transfer asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

Scorecard1 real difference · 9 level
StemFox Scientific Calculator versus SEC Heat Transfer: the parameters behind the verdict, then further details
ParameterStemFox Scientific CalculatorSEC Heat Transfer
PriceFreeFree
Rating4.8 (11 ratings) — better—
Positive reviews90.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 3 monthsEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS1515.0
Further details — not scored
Size24 MB10 MB
Age rating4+4+
DeveloperJoshua BrysonS.E.C. Accessories Limited

In-app purchases

6 purchases

StemFox Scientific Calculator

Subscriptions2
  • Monthly - Unlimited7 Days trial$2.991 Month
  • Yearly - Unlimited7 Days trial$9.991 Year
One-time4
  • Donut$0.99
  • Drink$2.99
  • Taco$4.99
Show 1 more
  • Pizza$9.99
None

SEC Heat Transfer

No in-app purchases

Questions

Is StemFox Scientific Calculator free?
StemFox Scientific Calculator is free to download, with in-app purchases available.
Is SEC Heat Transfer free?
SEC Heat Transfer is free to download, with no in-app purchases.
Do StemFox Scientific Calculator or SEC Heat Transfer have ads?
Neither StemFox Scientific Calculator nor SEC Heat Transfer shows ads.
Which is updated more often, StemFox Scientific Calculator or SEC Heat Transfer?
StemFox Scientific Calculator ships an update every 3 months, and SEC Heat Transfer every 3 months. Most recently, StemFox Scientific Calculator was updated on November 2, 2026 and SEC Heat Transfer on November 7, 2026.

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