Comparison

Third grade Math vs Thermodynamics Calculators

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

Head to head
About

Third grade Math

Features
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Elevate your subtraction skills with Third Grade Math Subtraction—an engaging app that blends natural handwriting input with adaptive mini games. Choose between two modes: use Math Trainer as a whiteboard to write answers at your own pace, or dive into 5 fun, interactive Math mini games that adjust to your skill level. With Third grade Math - Subtraction you can practice and improve the following math skills: - Subtraction facts - numbers up to 100 - Subtract two two-digit numbers - Subtract two three-digit numbers - Complete the subtraction sentence up to three digits - Subtract numbers with four or five digits - Balance subtraction equations up to two digits - Balance subtraction equations up to three digits Master essential subtraction concepts while enjoying an adaptive, dynamic learning experience that keeps you challenged and motivated every step of the way. Download today and transform your math practice into a rewarding adventure!

About

Thermodynamics Calculators

This app provides engineering professionals with a powerful tool for thermodynamics calculations. It features a comprehensive dataset for various species and a range of building blocks to construct complex models. An illustrative sample model is included for guidance.

Highlights
  • Temperature-dependent property data for 8 species
  • Building blocks for model creation
  • Daisy-chaining blocks for complex models
  • Includes one sample model
  • Validated against commercial software
Features
Read full description

A calculator designed for engineering professionals in Mechanical and Chemical Engineering industries. Validated against state-of-the-art commercial software. Temperature dependent property data set for 8 species - H2O, H2, N2, O2, CO2, Ar, CO and CH4, for accurate calculations. Building blocks available: Burner, Compressor, Expander, Cooler, Heater, Heat Exchanger, CPOX Reformer, SMR Reformer, Fuel Cells (molten carbonate, PEM and solid-oxide) and Water Dropout. User can daisy-chain these building blocks to create basic models. One illustrative sample model included.

Screenshots

Third grade Math4 screens
Thermodynamics Calculators4 screens

Verdict

The call

The clearest difference is price: Thermodynamics Calculators at Free against Third grade Math's $2.99. Thermodynamics Calculators also leads on update cadence (weekly vs every 28 months). Third grade Math's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On ads 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

Thermodynamics Calculators is free to download; Third grade Math costs $2.99 up front. Thermodynamics Calculators sells 3 one-off in-app purchases. Third grade Math asks for nothing beyond the download.

UpkeepUpdate frequency

Third grade Math ships an update every 28 months, Thermodynamics Calculators weekly. The most recent releases landed on October 10, 2026 and September 29, 2026 respectively.

Scorecard5 real differences · 5 level
Third grade Math versus Thermodynamics Calculators: the parameters behind the verdict, then further details
ParameterThird grade MathThermodynamics Calculators
Price$2.99Free — better
Rating—5.0 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 28 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better16.6
Further details — not scored
Size17 MB6 MB
Age rating4+4+
DeveloperSergey MaluginLucy Enterprises

In-app purchases

None

Third grade Math

No in-app purchases

3 purchases

Thermodynamics Calculators

One-time3
  • Edit option$0.99
  • Remove ads$1.99
  • Modeling access$4.99

Questions

Is Third grade Math free?
Third grade Math costs $2.99, with no in-app purchases.
Is Thermodynamics Calculators free?
Thermodynamics Calculators is free to download, with in-app purchases available.
Do Third grade Math or Thermodynamics Calculators have ads?
Neither Third grade Math nor Thermodynamics Calculators shows ads.
Which is updated more often, Third grade Math or Thermodynamics Calculators?
Third grade Math ships an update every 28 months, and Thermodynamics Calculators weekly. Most recently, Third grade Math was updated on October 10, 2026 and Thermodynamics Calculators on September 29, 2026.

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