Testimonials by

Padma Shree Pandit Ulhas Kashalkar

Internationally renowned Hindustani Classical Vocalist and Guru.

"Recently Sandeep Ranade demonstrated his app called NaadSadhana. It is a wonderful app with many unique features, which up until now, were never seen in a mobile application.

The Smart Swarmandal in the app accompanies and complements the singer. The user simply selects the Raag, turns on the Swarmandal and then the NaadSadhana app automatically and intelligently plays different phrases every single time. When the musician halts on a ‘nyaas’ note or pauses after completing their phrase, the app plays exactly the way an expert would play a swarmandal in a live concert or riyaaz session. 

Another very useful feature of this app is that the user can visually check the accuracy of their Sur (notes) while singing. The app checks every note with high precision. This feature can be very useful for students of music to ensure perfect ‘Sur’.

The App also features 22 Shruti Tuning (and Gandhar Tuning) which ensures that the correct “shrutis” are used in every Raag. 

I wish Sandeep all the very best."

Suyog Kundalkar

Harmonium Artist, Tuning Expert, Singer & Composer.

"This App is an absolute must for self-practice of Swar in an age where one can’t possibly spend 24 hours with a Guru. A very natural, easy to use, apt, and technologically advanced App for students and experts alike!"

"माझा मित्र आणि मेवाती घराण्याचा गायक संदीप रानडे याने 'नादसाधना' नावाचे App तयार केले आहे. आजच्या काळातील संगीत शिक्षण व्यवस्थेस सहायक म्हणून या App चा संगीत शिकणाऱ्या विद्यार्थांना, प्रगत अवस्थेतील गायकांना तसंच कलाकारांनाही नक्कीच उपयोग होईल. आजच्या काळात २४ तास गुरुंचं सान्निध्य मिळणं ही गोष्ट अवघड आहे. त्यामुळे घरी स्वराभ्यास करताना ह्या App च्या मदतीने विद्यार्थांना स्वतःला तपासून पाहता येईल.

संदीप स्वतः Software Engineer असल्यामुळे त्याने तांत्रिकदृष्ट्या हे App अतिशय सहज-सोपं आणि चोख बनवलं आहे ज्यात प्राथमिक अवस्थेपासून उच्चतम श्रेणीतील विद्यार्थी-गायकांना ह्याचा वापर करता येईल. मी ह्या निर्मितीबद्दल संदीपचं अभिनंदन करतो आणि मनापासून शुभेच्छा देतो."

Milind Vasudeo Kulkarni

Harmonium Artist, Tuning Expert & Composer.

"The NaadSadhana App is a must-have for students, performers and harmonium players as a gold-standard reference for precise notes. A great addition to the tradition of Hindustani Classical Music by Sandeep Ranade!"

"माझा मित्र, संदीप रानडे, यानी नुकतेच नादसाधना हे App तयार केले आहे ज्याच्या द्वारे तुम्ही स्वतःच्या सुरांचा नेमका अभ्यास करू शकता. घरात बसून तुम्हाला रियाज करताना नेमके सूर कसे लावायचे, कसे लागतायेत, किती चढतात, किती उतरतात या सर्वांची माहिती Appमधून मिळते ही खूप मोठी गोष्ट आहे. त्याचबरोबर हार्मोनियम वादकांसाठी पण हे App खूप उपयोगी आहे. हार्मोनियम ट्युनिंग करताना एक Reference म्हणून हे App नक्कीच मार्गदर्शक ठरेल.

शास्त्रीय संगीताच्या परंपरेमध्ये खूप मोठी, चांगली व गरजेची उपलब्धी संदीप नी केली आहे ह्याबद्दल मी संदीप चे खूप अभिनंदन करतो. सर्व संगीताच्या विद्यार्थ्यांनी व कलाकारांनी ह्या App चा लाभ जरूर घ्यावा आणि App द्वारे सुरांची ओळख करून घ्यावी म्हणजे भविष्यामध्ये सुरांचा काहीही प्रॉब्लेम येणार नाही."

Tanmay Deochake

Harmonium Soloist, Accompanist & Teacher

"Sandeep is not only an outstanding artist, he also has the rare ability to go deep into the science and mathematics of music. The NaadSadhana app is an extraordinary contribution to the field of Indian Classical Music because of this combination of art and science. This app will not only help you find the precise locations of notes and shrutis, but also provide live, intelligent and artistic Swarmandal accompaniment as you sing or play. This creates a captivating ambiance of the raga and also automatically makes your notes accurate.


Students as well as performers can avail the benefits of this app. Till today, the precise locations of the 22 Shruti, the logic for choosing the right Shruti for Ragas and the mathematics underlying these concepts was not known, but Sandeep’s research has made the 22 Shruti easy to understand and accessible to everyone through the NaadSadhana app. I am using this app regularly and highly recommend that students of music install this app and use it during practice as well as concerts.

I wish Sandeep the very best for his future endeavours!"

“संदीप एक उत्तम कलाकार तर आहेच, पण त्याबरोबरच त्याला संगीत शास्त्राची देखिल तितकीच आस आहे. आज शास्त्रीय संगीत क्षेत्राला नादसाधना App मिळाले आहे ती त्याचीच देण आहे. हे App अचूक स्वर स्थाने तर दाखवतच, पण त्याबरोबर उत्तम, साजेशीर आणि कलात्मक स्वरमंडळ संगत पण करते. त्यामुळे रागाचा सुंदर माहोल तयार होतो आणि स्वर आपोआप बरोबर स्थानी लागतात. 

विद्यार्थ्यांना तसेच कलाकारांना ह्या अँप चा खूप फायदा आहे. आजपर्यंत २२ श्रुती, त्यांची अचूक स्थाने, रागात श्रुतींची निवड आणि त्यामागचे गणित आपल्याला माहिती नव्हते, पण संशोधनातून तेच आज पुढे येत आहे आणि नादसाधना अँप द्वारे ह्या ज्ञानाचा सांगीतिक उपयोग संदीप ने उत्तम रित्या केला आहे. मी स्वतः हे App वापरतो आहे आणि मी सर्व संगीत साधकांना हे App recommend करतो - आपण हे App जरूर install करा आणि त्याचा रियाजात तसेच मैफिलीत आनंद घ्या.

संदीपला पुढील वाटचालीसाठी अनेक शुभेच्छा !”

WHAT STUDENTS ARE SAYING.

Aarshin Karande

Marketing & Design @ PeopleFirm, Seattle.

"This app is one of the great things that digitization has brought to Indian Classical music. All students and teachers of this art will benefit from this app. It features a biofeedback experience that reinforces swar accuracy and fluency with unbelievable (dare I say "perfect") precision based on the "swayambhu gandhar." 

Generations before us would have benefited from this app. Generations onwards will benefit from it. An incredible reference tool for riyaaz, tuning, and acoustics. The smart swaramandal feature generously supports foresight and introspection into creative and technical expression during riyaaz.

NaadSadhana is simple, smart, and surreal - Art, philosophy, science, and technology at its best."

Rohit Achyarya

Senior Manager @ P&G, Mumbai.

"This is a groundbreaking app for Singers that brings one closer to Melodic Perfection.

The swarmandal feature on Nadhasadhana comes as a terrific, life-like add-on for performers and learners alike. I experienced a real concert-like ambience with the swarmandal complementing the vocalist like a dream. The phrases created by the app enhances the performance significantly. It is a huge leap of technology - the swarmandal sound is crisp and natural and the accompaniment artistic, creative and varied. 

NaadSadhana is a complete package for every classical musician - students, performers, and gurus."

Shreedhar Ganapathy

Engineering Director @ Financial Engines Inc, Sunnyvale.

"NaadSadhana brings back the gurukul style learning by being a virtual guru for beginners and experts focusing on helping build on your riyaaz. Both the note detection feature and the Smart Swarmandal leverage complex algorithms blending with machine learning to help you perfect your sur. The swarmandal accompanies you with notes that meld with your singing dynamically. All with an amazingly simple interface"

Chitra Desai

Homemaker, Student of Music, Pune.

“Naadsadhana is a simple but smart app essential for students of music. The tuner gently guides you to perfection and the smart swarmandal accompanies perfectly, subtly and creatively with perfect sound and notes.

The Perfect Guru, that’s always with you!”

Jay Gokhale

Software Engineer @ Index, San Francisco.

“To me, learning to sing is a simultaneous refinement of both the ear and the voice. Unfortunately, you're only as good as your ears allow you to be. This app is kind of like having the ears of seasoned pro. 

The beautiful swarmandal acts as a higher level feedback loop. It creates a raga-sized playground of success for you to play in!

I wholeheartedly recommend this app to anyone (at any level of proficiency) wishing to improve their singing.“

Uma Phadke-Datar

Graduate Student, Taxation, California.

"The app is an eye-opening reality check. You clearly see your strengths, weaknesses and rate of growth at a glance. It aims at helping you achieve great precision of notes while singing. Indeed, a delight for singers!"

Jay Banerjee

Senior Program Manager, Premier Inc, North Carolina.

"Within a couple of weeks of practicing with the NaadSadhana App, I saw great improvements in my pitch, breath control, tonal quality, resonance and overall sound production. I highly recommend this app to help you evolve endlessly!"

Ujjwal Parikh

Software Engineer @ Cisco, Boston.

“I have been using the NaadSadhana app for over a couple of months now and it has helped me improve the precision of my notes tremendously.

I really like the Smart Swarmandal which is nearly indistinguishable from an acoustic swarmandal. It adapts to the notes being sung/played and gives you
that extra support to make sure that the swar is perfect.

The app by itself was a great tool to perfect the notes, but the intelligent, creative, adaptive swarmandal
makes it an indispensable tool for beginner and advanced singers alike.”

© Copyright 2018 Sandeep D. Ranade.