Resistor Tools Pro vs PeakTech Safety Tester
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)
PeakTech Safety Tester
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1.PeakTech Safety Tester App is professional software for connecting PeakTech instruements to your iOS mobile device. 2. It enhances the efficiency and quality of the measurement by allowing you to record and manage readings independently. 3. Use the app to realize a measurement visualization, data logging and forwarding of the measured values.
Screenshots
Verdict
The clearest difference is price: PeakTech Safety Tester at Free against Resistor Tools Pro's $0.99. PeakTech Safety Tester also leads on iOS requirement (9.0 vs 12.0). Resistor Tools Pro's advantage is update cadence (every 2 months vs every 7 months). 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
PeakTech Safety Tester 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, PeakTech Safety Tester every 7 months. The most recent releases landed on October 21, 2026 and October 27, 2026 respectively.
| Parameter | Resistor Tools Pro | PeakTech Safety Tester |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Siu Yuen Ho | PeakTech GmbH |
In-app purchases
Resistor Tools Pro
No in-app purchases
PeakTech Safety Tester
No in-app purchases
Questions
Is Resistor Tools Pro free?
Is PeakTech Safety Tester free?
Do Resistor Tools Pro or PeakTech Safety Tester have ads?
Which is updated more often, Resistor Tools Pro or PeakTech Safety Tester?
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