Comparison

StudentCalc vs Voltage Regulator

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

Head to head
About

StudentCalc

A scientific calculator designed for ease of use on mobile devices. It offers large, uncluttered buttons and intuitive gesture-based access to functions, eliminating the need for complex key combinations. Customize your experience with background options and enjoy extended accuracy for precise calculations.

Highlights
  • Gesture-based function access
  • Large, uncluttered buttons
  • Backspace correction key
  • Copy and paste functionality
  • Customizable background and display
  • Extended accuracy calculations
Features
Read full description

Scientific Calculator for iPad, iPhone and iTouch all in the same App. Easy to access the scientific functions by swiping between exponents, logs and sinus functions so all buttons are large and uncluttereds, this allows you to work faster and more reliable (no rotation or "2nd" function keys needed). All the functions are visible on the iPad, but more are revealed by rotating to landscape. Balloon help for easy functionality. Features: - Correct with a backspace key if you enter a wrong digit without having to redo. - Parantheses and correct calculation priority. - Copy and Paste numbers to other Apps, by tapping on the display. - Change number display to Fixed, Scientific, etc., by tapping on the display. - Customize you background and fixed digits. - An audible sound confirms if you have pressed a button, which can be easily disabled by touching the speaker. - Previous calculation is repeated when the equal sign is pressed. - Memory is saved between uses. - Degrees and Radians can be switched by pressing the symbol on the screen or a button. - A visible and audible error when trying to divide by zero or take the square root of a negative number. - Numbers are shown in local format, depending on your Region Formats, i.e. comma used in Europe. - Calculations are done in extended accuracy so that the square root of 2 repeated a few times, followed by a square will result in 2, not 1.999999999999983 (try this on other calculators!).

About

Voltage Regulator

Calculate resistor combinations for adjustable voltage regulators. This tool helps electronics hobbyists and professionals determine desired output voltages and resistor values. Results can be exported and shared easily.

Highlights
  • Adjustable voltage regulator support
  • Calculate resistor combinations
  • Determine resistor values
  • Export results to CSV
  • Share CSV via iCloud/AirDrop
Features
Read full description

This app is a voltage regulator calculator. It is is suitable for electronics hobbyist, electronic engineers or professionals. Features * Support 3-terminals adjustable voltage regulators * To find out combinations of 2 resistors making a desired output voltage * Calculate resistor values / output voltage * Export results to CSV file * Share CSV file to iCloud Drive (For iOS8 or later) * Share CSV file via AirDrop (For iOS7 or later) Feature in PRO only * Calculate thermal resistance of heatsink * Selectable 1%, 5% resistors * No ads * No limitations

Screenshots

StudentCalc3 screens
Voltage Regulator4 screens

Verdict

The call

The clearest difference is price: Voltage Regulator at Free against StudentCalc's $1.99. Voltage Regulator also leads on iOS requirement (12.0 vs 26.0). StudentCalc's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.8). On review sentiment, ratings volume, 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

Voltage Regulator is free to download; StudentCalc costs $1.99 up front. Voltage Regulator sells 1 one-off in-app purchase. StudentCalc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

StudentCalc holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

StudentCalc ships an update every 4 months, Voltage Regulator every 9 months. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

Scorecard6 real differences · 4 level
StudentCalc versus Voltage Regulator: the parameters behind the verdict, then further details
ParameterStudentCalcVoltage Regulator
Price$1.99Free — better
Rating5.0 (2 ratings) — better4.8 (5 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings25 — better
Update frequencyEvery 4 months — betterEvery 9 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.012.0 — better
Further details — not scored
Size16 MB3 MB
Age rating4+4+
DeveloperHannes SverrissonSiu Yuen Ho

Customer experience

StudentCalc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Voltage Regulator

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

StudentCalc

No in-app purchases

1 purchases

Voltage Regulator

One-time1
  • Unlock Pro features$1.99

Questions

Is StudentCalc free?
StudentCalc costs $1.99, with no in-app purchases.
Is Voltage Regulator free?
Voltage Regulator is free to download, with in-app purchases available.
Which has better reviews, StudentCalc or Voltage Regulator?
StudentCalc is rated higher. StudentCalc averages 5.0 out of 5 from 2 ratings, while Voltage Regulator averages 4.8 from 5 ratings.
Do StudentCalc or Voltage Regulator have ads?
Neither StudentCalc nor Voltage Regulator shows ads.
Which is updated more often, StudentCalc or Voltage Regulator?
StudentCalc ships an update every 4 months, and Voltage Regulator every 9 months. Most recently, StudentCalc was updated on October 6, 2026 and Voltage Regulator on October 10, 2026.

Other comparisons