EngineerCalc vs Psychro Calc Pro
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
EngineerCalc
Read full descriptionHide full description
EngineerCalc is an app for electrical engineers and hobbyists. At the moment, it includes 4 calculators: ⢠CapacitorCalc - Calculate the ripple voltage refusing capacitor capacitance and min. voltage for your AC-DC circuit ⢠InductorCalc - Calculate the inductance, needed wire-length (and resistance of the wire) and Q-value for your diy coil/inductor ⢠LC-TankCircuit - Calculate the 3rd value of your tank-circuit (capacitance, inductance or frequency) ⢠Ohm'sLawCalc - Calculate the 3rd and/or 4th value of an Ohm's law circuit (voltage, current, resistance or power ) The app supports multiple units which you can change by tapping the unit-label: For CapacitorCalc: ⢠Voltage (Volt) - V ⢠Current (Amper) - A ⢠Frequency (Herz) - Hz For InductorCalc: ⢠Distance (Meter) - µm, mm, cm, m, Km ⢠Resistance (Ohm) - pΩ, nΩ, µΩ, mΩ, Ω, KΩ, MΩ, GΩ ⢠Frequency (Herz) - Hz, KHz, MHz, GHz ⢠Inductance (Henry) - pH, nH, µH, mH, H, KH, MH, GH For LC-TankCircuit: ⢠Capacitance (Farad) - pF, nF, µF, mF, F, KF, MF, GF ⢠Inductance (Henry) - pH, nH, µH, mH, H, KH, MH, GH ⢠Frequency (Herz) - Hz, KHz, MHz, GHz For Ohm'sLawCalc: ⢠Voltage unit (Volt) - pV, nV, µV, mV, V, KV, MV, GV ⢠Current unit (Amper) - pA, nA, µA, mA, A, KA, MA, GA ⢠Resistance unit (Ohm) - pΩ, nΩ, µΩ, mΩ, Ω, KΩ, MΩ, GΩ ⢠Power unit (Watt) - pW, nW, µW, mW, W, KW, MW, GW If you have an development suggestion, want to request an unit support or want to report a bug, you can get in touch with me trough my website https://ssl-saario.xyz/AppFiles/html/eCalcHelp.html
Psychro Calc Pro
Read full descriptionHide full description
Psychro Calc Pro is a professional psychrometric calculator for HVAC engineers and technicians. Instantly calculate dry bulb, wet bulb, dew point, relative humidity, humidity ratio, enthalpy, and air density. Supports SI and Imperial units, PDF report generation with custom logo, and calculation history. PREMIUM FEATURES Unlock all calculations, process analysis, and PDF export with a one-time purchase of $9.99. No subscription, no recurring fees ā pay once, use forever. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Psychro Calc Pro at Free against EngineerCalc's $1.99. Psychro Calc Pro also leads on update cadence (every 2 days vs every 60 months). EngineerCalc's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Psychro Calc Pro is free to download; EngineerCalc costs $1.99 up front. Psychro Calc Pro sells 2 in-app purchases, starting at $3.99 per month. EngineerCalc asks for nothing beyond the download.
EngineerCalc ships an update every 60 months, Psychro Calc Pro every 2 days. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.
| Parameter | EngineerCalc | Psychro Calc Pro |
|---|---|---|
| Price | $1.99 | Free ā better |
| Update frequency | Every 60 months | Every 2 days ā better |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 ā better | 13.0 |
| Further details ā not scored | ||
| Size | 10 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | oskari saarinen | Mehmet Karakas |
In-app purchases
EngineerCalc
No in-app purchases
Psychro Calc Pro
- Monthly Premium3 Days trial$3.991 Month
- Lifetime Premium$9.99
Questions
Is EngineerCalc free?
Is Psychro Calc Pro free?
Do EngineerCalc or Psychro Calc Pro have ads?
Which is updated more often, EngineerCalc or Psychro Calc Pro?
Other comparisons















