FishFood Calculator

Initial release: 2016

Mobile app

In order to help fish farmers produce more for less, two friends and I decided to create FishFood Calculator, a mobile app that allows fish farmers to calculate the ingredient proportions to use for provender formulation, based on the ingredients available, in order to maximize nutritional values while minimizing cost. The simplex method of linear programming was used to carry out those calculations. FishFood Calculator was the 1st prize winner of the 2016 Youth Enabled Fish Farming Agrihack Hackathon in Benin. This led to the creation of e-MAS (Modeling Agri Systems), the first startup I co-founded, together with agro-economist MSc. Freddy Padonou and software engineer Hermine Gbenoudon.

🧰 Tech stack

  • Languages: Java
  • Frameworks: Android SDK
  • Database: Realm
  • Tools/Software: Android Studio

🖼️ Screenshots

Welcome screen

Add new pond

New pond details

Feed formulation with ingredients and prices as input

Details of ingredients and prices for a formulation

Rationing algorithm

About screen

⚙️ Technical challenges

One main challenge with Fish Food Calculator was connectivity. Fish farmers complained that they had limited to zero access to the internet. This motivated my choice to choose an offline first approach. The entire feed formulation algorithm was embedded in the app, and no network connection was required. Only backups necessitated internet connectivity.

ChallengeSolution
Ensuring offline functionality Used local storage (Realm) with manual/automatic data backups when internet is available.

👨‍💻 Project duration and role

The MVP was built in 3 weeks and maintained for a few years until the project was eventually shut down around 2020. I was the lead Android Engineer of the team in regard to technical aspects.

🌍 Real world pictures

Freddy, Hermine & Seth

Freddy, Hermine and Seth-Phares during a 2016 e-MAS presentation in Ibadan, Nigeria.

Built in Benin 🇧🇯 with Jaspr

© 2025 Seth-Pharès Gnavo. All rights reserved.