Resistor Tools vs Pareva
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resistor Tools
This utility app provides a suite of tools for calculating and determining resistor values. It assists hobbyists and engineers with series, parallel, and voltage divider calculations, as well as inverting amplifier gain.
- Series and parallel resistor calculation
- Resistor combination finder
- Voltage divider ratio and value calculation
- Inverting amplifier gain calculation
- Save combinations to CSV
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This app is a collection of resistor calculators. It is suitable for hobbyist or electronic engineer. * Calculate resistance of two resistors in series or parallel * Find out combinations of two resistors in series/parallel making a desired resistance * Calculate ratio of R1/R2 and voltage divider * Find out resistor values of making voltage divider ratio * Find out resistor values of making inverting amplifier gain * Save combination values in CSV file
Pareva
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Pareva is the fastest way to pick up, drop off, or grab what's yours from a Pareva locker. Open your phone, tap once, push the door — you're in. Your bookings, your pocket! No scrolling through inboxes, no forwarded confirmations, no "what was my reference again?" One tap to open The countdown ring tells you how long you have. The door clicks open when you push. Pareva handles the rest. Your wrist works too Left your phone in the car? Your Apple Watch already has the same bookings and the same Open button. Raise your wrist, tap, push, done.
Screenshots
Verdict
The clearest difference is in-app purchases: Pareva at none against Resistor Tools's 1. Pareva also leads on update cadence (every 9 days vs every 2 months). Resistor Tools's advantage is iOS requirement (12.0 vs 26.0). On price, 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
Both are free to download. Resistor Tools sells 1 one-off in-app purchase. Pareva asks for nothing beyond the download.
Resistor Tools ships an update every 2 months, Pareva every 9 days. The most recent releases landed on September 24, 2026 and September 11, 2026 respectively.
| Parameter | Resistor Tools | Pareva |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (10 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Apple Watch |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 4 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | Pareva |
In-app purchases
Resistor Tools
- Unlock pro feature$0.99
Pareva
No in-app purchases
Questions
Is Resistor Tools free?
Is Pareva free?
Do Resistor Tools or Pareva have ads?
Which is updated more often, Resistor Tools or Pareva?
Other comparisons
