Envie: Envelope Challenge

Rapidly building software and teams...

Mobile App


It took TeamWALT too long to build apps that teach people how to save and build wealth.


TeamWALT paired with Sodium Halogen to build the Envie app, a digitized version of the 100 day envelope challenge. Over the course of 4 months, TeamWALT learned the ins and outs of designing, architecting, developing, and testing their app. TeamWALT imbedded a jr frontend developer in our team to skill up and learn our process for app creation.


TeamWALT was able to develop an app 80% faster than they could before. Their frontend developer also saw a 70% improvement in technical proficiency while creating Envie.

Through the training and processes with Sodium Halogen, TeamWALT can now build and maintain mobile apps.

“In the first 2 weeks of working side-by-side with an SH developer, I learned five times more than in any two-week period of my education—and I had fun doing it.”

Jordan Deck
Junior Software Engineer - S61

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