555 Calc vs Voltage Divider Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
555 Calc
This utility app helps engineers and hobbyists calculate resistor values for circuits using the Timer IC 555. Simply input frequency, duty ratio, and capacitor values to get the required resistor outputs.
- Calculate resistor values
- Input frequency
- Input duty ratio
- Input capacitor value
- Timer IC 555 circuit design
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This App calculates registors value, when designing the circuit using Timer IC 555. How to (1) Input Frequency value. (2) Input Duty Ratio. (3) Input C1 Value. (4) Touch ‘Calculate’ button. (5) Registors value will be displayed. Note. * Set Duty Ratio to 50 ~ 99. * If you set Duty Ratio to 50, R1 value will be set to 0.
Voltage Divider Calculator
Calculate unknown values in voltage divider circuits with ease. Supports loaded dividers, power dissipation calculations, and finding standard resistor values. Ideal for students, hobbyists, and engineers.
- Calculate Vin, Vout, R1, R2
- Support for loaded dividers (RL)
- Power dissipation calculation (P(R1), P(R2))
- Find nearest standard E24 resistor values
- Supports Ohms and Kilo-Ohms
- Instant results as you type
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Voltage Divider Calculator Easily solve voltage divider circuits Enter any 3 known values — • Input Voltage (Vin) • Output Voltage (Vout) • Resistor 1 (R1) • Resistor 2 (R2) and the app instantly calculates the fourth. NEW in this version: • Loaded divider support — add an optional Load Resistance (RL) to see the real output voltage under load • Power dissipation — see P(R1) and P(R2) instantly, so you can pick the right resistor wattage • Standard values — get the nearest E24 resistor value for your calculated resistance • Completely ad-free — no banners, no pop-ups, no tracking Supports Ohms and Kilo-Ohms, with instant results as you type. Perfect for students, hobbyists, and engineers doing quick, accurate circuit analysis and design. Compatible with both iPhone and iPad.
Screenshots
Verdict
The clearest difference is rating: 555 Calc at 4.0 against Voltage Divider Calculator's 3.3. 555 Calc also leads on iOS requirement (11.0 vs 17.6). Voltage Divider Calculator's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
555 Calc holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively.
555 Calc ships an update every 20 months, Voltage Divider Calculator every 11 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.
| Parameter | 555 Calc | Voltage Divider Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | 3.3 (3 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 | 3 |
| Update frequency | Every 20 months | Every 11 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 18 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Jibiki Works | V PUGAZHENTHI |
Customer experience
555 Calc
Voltage Divider Calculator
In-app purchases
555 Calc
No in-app purchases
Voltage Divider Calculator
No in-app purchases
Questions
Is 555 Calc free?
Is Voltage Divider Calculator free?
Which has better reviews, 555 Calc or Voltage Divider Calculator?
Do 555 Calc or Voltage Divider Calculator have ads?
Which is updated more often, 555 Calc or Voltage Divider Calculator?
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