# Pedal Builder Toolkit — Design, drill and wire pedals

> Design, drill and wire pedals (iPhone/iPad app by Nerd Alchemy LLC.)

- Source: https://appshunter.io/ios/app/pedal-builder-toolkit/id6829544512 (this page in markdown: same URL + `.md`)
- Developer: [Nerd Alchemy LLC](https://appshunter.io/developer/927008025)
- Category: Music, Utilities
- Price: $9.99
- Age rating: 4+
- Requires: iOS 26.0 · 8 MB
- Languages: American English
- Released: 2026-11-02
- Data updated: 2026-11-06

## What is Pedal Builder Toolkit?

Pedal Builder Toolkit is for people who build their own guitar effects pedals. Every build sits on your bench as a coloured enclosure with its drilled layout, how many of its parts you have, and what comes next. The tools live in drawers beside it.

DESIGN
• Gain stage designer: op-amp or single-transistor stage, with silicon, LED or germanium clipping to ground or in the feedback loop. Shows how much signal fits before clipping at 9 V and 18 V.
• Tone controls: treble cut, two-knob bass and treble, and mid scoop, with response plots at several knob positions.
• Transistor bias for BJT, JFET and MOSFET stages and followers, from your measured hFE, Idss and Vp, Vgs, or typical values.
• Clean boost, op-amp and JFET buffers, and low-pass, high-pass and band-pass filters.
• Standard E12 and E24 values with a nearest-value table, a schematic you can pinch to zoom, the formulas used, and one tap to send the parts to a parts list, a drilling layout or the power budget.

DRILL
• Drilling templates for nine common diecast enclosure sizes, from A-size to DD-size, with the dimensions from the enclosure maker's drawings. Edit any size to match your box.
• Place footswitches, pots, jacks, LEDs, toggles and DC jacks on the top, ends and sides. Drag them or type exact positions.
• Print 1:1 across Letter or A4 pages with centre lines, crosshairs, hole sizes, 50 mm and 2 in check rulers, and face labels that say which way is up.
• Export SVG in millimetres for CNC or laser.
• Layout check: holes off the face or too close to an edge or each other, and parts that hit the walls or each other inside the box.
• Hole sizes with the range builders report, and your own measured sizes. Powder coat allowance.
• Drill chart: fractional, number, letter and metric bits, with nearest-bit lookup.

CALCULATE
• LED resistor, voltage divider and bias, RC filters, op-amp gain stages with dB and corner frequencies, Ohm's law
• Resistor colour bands, capacitor codes, pF/nF/µF, nearest standard values
• Wire gauge: AWG to diameter, area and copper resistance

POWER
• Power budget for each output of your supply, with isolated or shared outputs and voltage checks
• Battery life estimate
• DC jack polarity: 9 V centre negative on a 5.5 × 2.1 mm barrel

PARTS AND BUILDS
• Parts lists with batch totals (×N), costs, suppliers and links. CSV import and export.
• Stock on hand, shortfalls for each parts list, and an order list
• Build log with stages, dates, serial numbers, test notes and photos

WIRING
• 3PDT true bypass with an LED, lug by lug, in both switch positions
• Input and output jacks, a stereo input jack as the battery switch, and the battery snap
• DC jack with series or shunt reverse-polarity diode
• Status LED: lit when on, bi-colour or two LEDs, power LED
• Buffered bypass, and relay bypass as a block diagram
• A/B, A/B/Y and an effects loop
• Expression pedal and tap-tempo jacks
• 18 V charge pump from the chip maker's datasheet circuit, with the output voltage at your load

ON THE BENCH
• Pinouts for TO-92, SOT-23 and DIP-8 parts, taken from named maker datasheets, plus your own
• Tone generator for tracing a signal through a build

Every tool has a short guide and ⓘ notes on its fields. Works offline. No account, no ads, no tracking.

Hole sizes and calculated values are starting points: check them against your parts and their datasheets, and on a breadboard. Pedals run on low-voltage DC; the app does not cover mains power supplies.

## Is Pedal Builder Toolkit safe?

Not enough ratings yet to assess Pedal Builder Toolkit.

## Is Pedal Builder Toolkit legit?

Pedal Builder Toolkit appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Pedal Builder Toolkit is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-11-02

No release notes.

## More apps by Nerd Alchemy LLC

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- [SiteWrench](https://appshunter.io/ios/app/sitewrench/id6829261775)
- [Luthier Toolkit](https://appshunter.io/ios/app/luthier-toolkit/id6829345424)
- [Amp Tech Toolkit](https://appshunter.io/ios/app/amp-tech-toolkit/id6829353883)

All apps by Nerd Alchemy LLC: https://appshunter.io/developer/927008025

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*