Specifications — KSC-1
Kyan Santiago-Calling. The plain version: who I am, what I own, what I've made, and how to reach me.
Who
| Name | Kyan Santiago-Calling |
|---|---|
| Age | 20 |
| From | Boston bred |
| Based | San Diego |
| Does | I build consumer apps that spread on their own. |
What I own
Six String Studio, LLC
| Entity | Delaware LLC |
|---|---|
| Role | Founder |
| Owns | ToneAdapt, ToneID, GuitarMaxx, my personal brand |
| Site | sixstring.studio |
The company that owns my apps and my personal brand. ToneAdapt, ToneID, GuitarMaxx, and whatever comes next.
Raze Labs
| Role | Co-founder, with Ian Carscadden |
|---|---|
| Where | Seattle |
| Site | razelabs.app |
A consumer app studio in Seattle that I started with Ian Carscadden, who came from Cluely. We make Riff, RepHero and a few other apps.
What I'm good at
- Consumer apps people send to their friends
- Onboarding and paywalls
- Paid social and UGC
- Audio and ML products
- Shipping fast
Work with me
Consulting for founders: onboarding, paywalls, growth and ad creatives. One to one, over video.
| 15 min | $100 |
|---|---|
| 1 hour | $500 |
| kyan@sixstring.studio |
Socials
Apps
3.1 · Neck pickup
ToneAdapt
Pick any song. Tell it the gear you own. Get the settings that make your rig sound like the record.
Launched April 2026 Players 300,000+ App Store 4.8 from 6,000+ ratings Platforms iPhone. Android coming. Works with Electric guitar and bass 
3.2 · Middle pickup
ToneID
Hear a tone anywhere. Get the gear and the settings behind it in seconds.
Launched September 2026 Song library 14,000+ songs Listens to TikTok, YouTube, the room Tells you The song, the gear, the settings 
3.3 · Bridge pickup
GuitarMaxx
Record 15 seconds of playing. Get a real score out of 100 and the one thing holding you back.
Launched September 2026 Scores Shred, Precision, Feel, Vibrato Also tells you Potential, tier and style Needs 15 seconds
Press
Starter Story interviewPat Walls and I talked about how ToneAdapt grew and what actually worked.Timeline
- 2023San Diego State. Computer science. Left to build full time.
- 2024Amazon. Machine learning data associate.
- 2025ToneAdapt. Built it because I wanted to sound like the record on the gear I owned.
- 2026Everything at once. Co-founded Raze Labs with Ian Carscadden. ToneAdapt launched in April and hit 100K users in 100 days. ToneID and GuitarMaxx shipped in September. Started Six String Studio.