Resistor vs Pedal Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resistor
Quickly calculate resistor values from color bands or SMD codes, and vice versa. This tool is ideal for electronics enthusiasts, students, and DIYers working with 4, 5, or 6-band resistors and various SMD codes. It functions offline and requires no registration.
- Calculate resistor values from color bands
- Convert resistor values to color bands
- Supports 4, 5, and 6-band resistors
- Handles SMD codes (EIA-3, EIA-4, EIA-96)
- Works offline
- No registration required
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Resistor Converter – Fast & Easy Calculate resistor values, color bands, and SMD codes in seconds – perfect for electronics hobbyists, students, and professionals. Supports 4-, 5-, and 6-band resistors as well as SMD codes (EIA-3, EIA-4, EIA-96). - Tap color bands → read the value - Enter resistor → get matching color bands & SMD codes - Works offline, no registration required - Perfect for electronics, study & DIY projects Simple, fast, and free – the perfect companion for every electronics enthusiast!
Pedal Builder
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This app is built to help you track your pedal builds and the inventory of parts. As you build pedals manually cross referencing your inventory is slow and tedious. With this app you can simply populate your inventory. Then add a pedal build and from the bill of materials add parts and you will be alerted if they are already in your inventory or not. Additionally, you can create a list of parts needed for that next order!
Screenshots
Verdict
The clearest difference is price: Resistor at Free against Pedal Builder's $1.99. Resistor also leads on update cadence (every 9 months vs every 19 months). Pedal Builder's advantage is iOS requirement (16.0 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
Resistor is free to download; Pedal Builder costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Resistor ships an update every 9 months, Pedal Builder every 19 months. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.
| Parameter | Resistor | Pedal Builder |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.9 (17 ratings) — better | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 9 months — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Gerhard Lentschik | John Toms |
In-app purchases
Resistor
No in-app purchases
Pedal Builder
No in-app purchases
Questions
Is Resistor free?
Is Pedal Builder free?
Do Resistor or Pedal Builder have ads?
Which is updated more often, Resistor or Pedal Builder?
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