Celestial Strings
A free tuner, metronome & ear trainer for musicians
Details
- External ID
- 1249121
- Source
- PH
- Company
- —
- Product
- Celestial Strings
- Website domain
- producthunt.com
- Launched
- Sept. 14, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.30815693820825313
- Tags
- iOS, Mac, Music
- Fetched at
- Sept. 15, 2026, 1:01 a.m.
- Updated at
- Sept. 15, 2026, 1:01 a.m.
Description
Hey Product Hunt! I built Celestial Strings because I was tired of paying for (or juggling) separate apps just to tune my guitar, keep time, and train my ear. It's one free app that does all three, with a custom pitch-detection engine (McLeod Pitch Method) for fast, accurate tuning. Would love your feedback — what would make this a daily tool for you? Happy to answer any questions here today.
Enrichment
- Theme
- music creation and learning tools
- Vertical
- Media & entertainment
- Function
- Vertical SaaS
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- tuner, metronome, and ear training utility for musicians
- Manually corrected
- False
Could you build this?
Partial A high-performance, real-time native guitar tuner requires low-latency DSP (digital signal processing) and precise audio buffering in Swift/AVAudioEngine that goes beyond typical prompt generation.
What it would actually take: The app requires low-level audio engineering using Apple's AudioKit or native AVAudioEngine / CoreAudio with Accelerate vDSP for real-time sample processing. Implementing the McLeod Pitch Method (MPM) accurately involves calculating the Normalized Square Difference Function (NSDF), peak picking, and parabolic interpolation on high-rate audio buffers with minimal latency and jitter. Developing this requires specialized knowledge of digital signal processing (DSP) and real-time thread safety on iOS.
Competitors
Other products that read as similar to this one — 62 launches clear the similarity bar, closest 8 shown.
Attention rank: #29 of 63 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 302 days after the earliest competitor.
- GUITARTUNINGS · ph · 2026-09-25 · 1 upvotes · similarity 0.56
- GuitarHub: Tuner & Metronome · ph · 2026-09-14 · 1 upvotes · similarity 0.51
- Hestia Tuner & Metronome · ph · 2026-09-25 · 1 upvotes · similarity 0.51
- Tonerune is live! Free guitar lessons. · ph · 2026-09-18 · 2 upvotes · similarity 0.51
- Open Chord: Learn Guitar · ph · 2026-09-18 · 1 upvotes · similarity 0.47
- A different approach to intonation training · hn · 2026-02-02 · 5 upvotes · similarity 0.44
- GuitarTool · ph · 2026-09-06 · 1 upvotes · similarity 0.44
- Interactive Chord Finder, Free Piano Scale and Chord Explorer · hn · 2026-02-16 · 9 upvotes · similarity 0.43
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a vertical saas tool for Insurance yet.