Resistor Tools Pro vs Pareva
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resistor Tools Pro
This utility app offers a suite of tools for calculating and finding resistor combinations. It's designed for electronics enthusiasts and professionals needing to determine series, parallel, and voltage divider configurations. Save and share your calculations easily.
- Calculate series/parallel resistance
- Find resistor combinations for desired resistance
- Voltage divider ratio and value calculation
- Inverting amplifier gain calculation
- Save combinations to CSV
- Share via AirDrop
- Upload CSV to iCloud Drive
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This app is a collection of resistor calculators. It is suitable for hobbyist or electronic engineer. * Calculate resistance of 2 resistors in series or parallel * Find out combinations of 2 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 * Share document via AirDrop * Upload CSV file to iCloud Drive (For iOS8 or later)
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 price: Pareva at Free against Resistor Tools Pro's $0.99. Pareva also leads on update cadence (every 2 weeks vs every 2 months). Resistor Tools Pro's advantage is iOS requirement (12.0 vs 26.0). On ads, in-app purchases 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
Pareva is free to download; Resistor Tools Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Resistor Tools Pro ships an update every 2 months, Pareva every 2 weeks. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.
| Parameter | Resistor Tools Pro | Pareva |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| 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 Pro
No in-app purchases
Pareva
No in-app purchases
Questions
Is Resistor Tools Pro free?
Is Pareva free?
Do Resistor Tools Pro or Pareva have ads?
Which is updated more often, Resistor Tools Pro or Pareva?
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