top of page

Excel System is now Blactail

Thank you for being with us when we were Excel System we are now ‘Blactail’, your technology partner.

excel system logo.png
photo-output (2).JPG

Native and Cross-Platform Mobile App Development Company based in Delhi, Serving Globally.

Choose a long-term partner who takes the whole mobile app development process off your shoulders

Delivery at speed

Focus on  goals

Better Collaboration

Blactail is Indian software development company delivering high-quality mobile digital products for startups and enterprises. Our world-class agile product teams partner with you to build impactful products in a predictable way with no surprises.


What We Offer

Helping Startups Scale Faster With Best In Class Tech Solutions.

Web Design

UI/UX Design Services

We are specialised in creating smooth and beautiful UI/UX designs that provide great user experience by incorporating streamlined and effective collaboration for projects, which strive for better results.

Web designing

Mobile App Development

Blactail is renowned as one of the best mobile app development company in

Delhi- NCR with its outstanding capabilities and a world-class team of mobile app designers and mobile application developers. It offers amazing customised android & iOS apps that meet the customer’s expectations.

Website creation

Web App

we are offering web app development where we understand your business requirements in detail and accordingly design, develop and deploy a web app that meets your business requirements and is robust and secure. To know more about how web app can help your business, kindly get in touch and we will be happy to consult you.


Technology Consulting 

At Blactail we have provided technology consulting to more than 92+ businesses across various industry sectors. Based in the Capital of India, we pride ourselves on our exquisite tech consulting skills.

Our approach to providing Tech Solution

  1. Introduction Meeting

  2. Product Discovery

  3. Offer

  4. Decision

  5. Kick-off

  6. Development

  7. Launch and product success

  8. Further development

Design & Mockup

Develop & Test

Submit to App Store

Music Apps

What Our Clients Say

I appriciate their attention to detail and their creativity that they bring in to my project.

 Vasundhra   Sharma
C.O.O Auxwork

The way Blactail helped me to develop our mobile app from scratch that truly exceeded my expectations

 Dr. Shelly, 

slush clinic

We don’t have a large IT team, so having Blactail as a trusted and valued partner has been remarkable

Shyam Ajgaonkar,

Get Ready to Build Your Dream Project With Our Years Of Expertise



Once you let us know your requirement, our technical expert will schedule a call and discuss your idea in detail post sign of an NDA

Image by Joan Gamell

Let's Get Started

Thanks for submitting!

Our Brands

excel system logo.png

Excel System

  • website

Leading providers of futuristic solutions in Computing, IT and Networking.

photo-output (2).JPG


  • website

Helping Businesses to develop their dream projects in various industries such as Fintech, Edtech, Foodtech, and Healthtech.

more calm logo-10.jpg


  • website

A team that aims to break all the taboos of mental health with corporate wellness programs.

bottom of page