







Proven Results: Our Customer Journeys
Real Customer Results!
94%
Reported sounding more confident and assertive in daily conversations
90%
Noticed a deeper, more resonant voice within 60 Days
91%
Felt clearer, louder speech after just 10 minutes a day of consistent use
Results according to consumer studies and testimonials. For more information refer to each product page.

60-Day Money Back Guarantee
At Selftr, we’re committed to helping you unlock your full potential with products that deliver real results. That’s why we offer a 60-day money-back guarantee if you’re not completely satisfied with your voice improvement, we’ll make it right.
Frequently Asked Questions
Does this actually work, or is it just a gimmick?
Does this actually work, or is it just a gimmick?
Yes, Selftr uses proven resistance training techniques to engage and strengthen vocal muscles. Just like working out builds your body, regular use improves your voice making it deeper, clearer, and more powerful.
How long until I notice results?
How long until I notice results?
Most users report noticeable improvements in vocal depth, projection, and clarity within 1–2 weeks of daily 10-minute use.
Will this make me sound fake or unnatural?
Will this make me sound fake or unnatural?
Not at all. Selftr enhances the voice you already have helping you sound more like your strongest, most confident self.
Is it uncomfortable or hard to use?
Is it uncomfortable or hard to use?
No. It’s designed with soft, ergonomic materials and adjustable resistance, making it easy to use even for beginners.
Do I need special knowledge or coaching?
Do I need special knowledge or coaching?
No training or experience needed. Simply place the device in your mouth and breathe, adjusting the resistance nozzle as required. it’s simple, intuitive, and fits into any routine.
What if It doesn't work for me?
What if It doesn't work for me?
No Worries! We offer a 60 day money back guarantee. If you're not satisfied, contact us for a hasle-free return.
Is this safe to use every day?
Is this safe to use every day?
Absolutely. Selftr is made from high-quality, non-toxic materials and designed for safe daily use with gradual vocal strengthening.
Can this help with public speaking or social confidence?
Can this help with public speaking or social confidence?
Yes. A stronger, more resonant voice helps you project confidence and authority whether you're on stage, in meetings, or dating.
Is this only for men?
Is this only for men?
Not at all. While many men use Selftr to achieve a deeper voice, women also benefit from improved vocal strength, clarity, and presence.
How do I clean my SELFTR.™ Bass Builder?
How do I clean my SELFTR.™ Bass Builder?
Simply wash with warm water and mild soap, then air dry.