SoundMeter X vs Pedal Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SoundMeter X
Transform your device into a professional sound level meter, noise dosimeter, and spectrum analyzer. Log data, calibrate sensitivity, and analyze audio with advanced features. Offers a free trial for premium functionalities.
- Handheld data-logging sound level meter
- Data-logging noise dosimeter
- Real-time octave spectrum analyzer
- Multi-channel data recorder
- Stereo signal generator
- Sensitivity calibration
- Data logging in CSV, TXT, MAT, and PDF
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SoundMeter X turns your iPhone or iPad into a handheld data-logging sound level meter (SLM), data-logging noise dosimeter, stereo signal generator, multi-channel data recorder, and real-time whole or 1/3 octave band spectrum analyzer (subscription or perpetual license required for most features--14-day free trial available). Input signals can be acquired from any available audio input path. Sensitivity calibration can also be performed for any audio input device and/or input channel. Direct hardware support (automatic sensitivity calibration, based on factory-defined values) for The Modal Shop’s 2-channel 485B39 USB-ICP interface and miniDSP’s UMIK-1, UMIK-2, and EARS microphones. In addition to real-time sound level measurements, SoundMeter can stream raw sound data to audio files, and store acquired sound level data, including date, time, and location, in CSV or TXT (tab-delimited) files, MAT-files, or high-resolution PDF images for later retrieval from your device. SoundMeter may be downloaded for free from the App Store. Additional tools and features are offered via in-app purchase. The SoundMeter Pro subscription includes: - User-defined custom metadata in saved audio and data files - Level MeterLp, Leq, Lx sound levels -- Standard Flat, A, C frequency weighting -- Standard Fast, Slow, Impulse time weighting -- Data logging. Data can be logged as often as every 0.1 seconds for up to 8 hours, every second for up to 72 hours, or every 10 seconds for up to two weeks. -- Event notifications - Max Levels Meter -- Traffic-light-style meters make it easy to monitor 2 separate sound level thresholds in 2 independent user-defined frequency bands. -- Define lower (warning) and higher (limit) sound level thresholds for overall (full audio band) levels as well as for individual octave frequency bands. -- Store user-defined thresholds in files for later recall. - Noise Dosimeter -- 8-hour Noise Dose, Projected Dose, TWA calculations -- Criterion Levels: 80, 85, 90 dB -- Exchange Rates: 3, 4, 5 dB -- Data logging. Data can be logged as often as every 0.1 seconds for up to 8 hours, every second for up to 72 hours, or every 10 seconds for up to two weeks. - Real-time Octave Spectrum Analyzer (RTA) -- Lp, Leq, Lx sound levels -- Supports whole or 1/3-octave frequency bands -- Standard Flat, A, C frequency weighting -- Standard Fast, Slow, Impulse time weighting -- NC, RNC, and NR references curves, NC, SIL, and NR values -- Data logging. Data can be logged as often as every 0.1 seconds for up to 8 hours, every second for up to 72 hours, or every 10 seconds for up to two weeks. - Multi-channel Data Recorder -- Supports up to 8 channels -- Live monitoring of recorded data -- Metadata (including calibrated sensitivity) embedded in audio file (AIF, CAF, WAV), optionally saved in separate data file - Stereo Signal Generator -- Left and right outputs assigned to arbitrary hardware output channels -- Random and pseudorandom (periodic) noise sequences with white or pink spectrum -- Linear and logarithmic frequency sweeps -- Dual periodic waveforms with arbitrary frequency and phase difference - MultiTool -- Powerful data monitoring and project management (Add 2-6 subtools, depending on screen size, and save configurations for easy recall at a later time.) The SignalScope X Pro Tool Set subscription can be shared between SoundMeter X and SignalScope X. It unlocks all tools and features of the SoundMeter Pro subscription in SoundMeter X and all tools and features of the Pro Tool Set subscription in SignalScope X (iCloud login required). Learn more about SoundMeter X at FaberAcoustical.com. Subscription Terms: - https://www.faberacoustical.com/apps/subscriptions/terms.html Privacy Policy: - https://www.faberacoustical.com/about/privacy.html Terms and Conditions for FaberAcoustical.com: https://www.faberacoustical.com/about/terms.html
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: SoundMeter X at Free against Pedal Builder's $1.99. SoundMeter X also leads on update cadence (every 3 weeks vs every 19 months). Pedal Builder's advantage is in-app purchases (none vs 7) and iOS requirement (16.0 vs 18.6). On 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
SoundMeter X is free to download; Pedal Builder costs $1.99 up front. SoundMeter X sells 7 in-app purchases, starting at $4.99 per month. Pedal Builder asks for nothing beyond the download.
SoundMeter X ships an update every 3 weeks, Pedal Builder every 19 months. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.
| Parameter | SoundMeter X | Pedal Builder |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 3.6 (45 ratings) — better | — |
| Positive reviews | 22.6% of reviews | — |
| Number of ratings | 45 — better | — |
| Update frequency | Every 3 weeks — better | Every 19 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 18 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Faber Acoustical, LLC | John Toms |
In-app purchases
SoundMeter X
- SoundMeter Pro, 1 Month14 Days trial$4.991 Month
- Pro Tool Set, 1 Month14 Days trial$24.991 Month
- SoundMeter Pro, 1 Year14 Days trial$49.991 Year
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- Pro Tool Set, 1 Year14 Days trial$249.991 Year
- 14-day Free Trial, SoundMeter ProFree
- SoundMeter Pro 2026 Upgrade$29.99
- SoundMeter Pro 2026$99.99
Pedal Builder
No in-app purchases
Questions
Is SoundMeter X free?
Is Pedal Builder free?
Do SoundMeter X or Pedal Builder have ads?
Which is updated more often, SoundMeter X or Pedal Builder?
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