Case study

Using Real-Time Field Data to Light Up Rural Kenya


The GravityLight Foundation has created a low-cost alternative to dangerous kerosene lamps. They used Collect, our mobile data collection platform, to conduct field research in Kenya and gather real-time data on how GravityLights are actually used and how they can be improved.


The GravityLight Foundation






global CO2 emissions caused by kerosene


household income spent on kerosene


field surveys conducted


data points collected

The Problem

Conducting field research on GravityLight, a low-cost kerosene alternative

Billions of people around the world use kerosene lamps because electric light is unavailable or too expensive. However, kerosene lamps are dangerous, harmful, and expensive. Kerosene lamps cause 3% of global CO2 emissions, respiratory problems, poisonings, fires and burns.

The GravityLight Foundation developed a low-cost device that uses a weighted pulley to power a generator that instantly provides 20 minutes of light. The foundation was keen to get insights and feedback from the field, and use this data to improve the device.

The Solution

Turning real-time field data into a better device

The GravityLight Foundation used Collect, our mobile data collection platform, to help its Kenya team conduct field research surveys in rural areas. This helped GravityLight better understand its target users. The Foundation's field team relayed insights from these surveys to its office in England, where they could be used as design inputs for the device.

Remote data collection
Remote data collection

Field staff gathered data through surveys conducted in remote areas of Kenya.

Accurate market research
Accurate market research

Surveys revealed in-depth feedback and usage data from existing users.

Real-time data monitoring
Real-time data monitoring

Staff analyzed the incoming data in real time at GravityLight's offices in England.

20 question types
No code, no hassle
Create data validations
Add skip logic
  • With everything from simple subjective questions to complex tabular questions, collecting comprehensive data was no problem.

  • Our simple web dashboard made creating a form as easy as writing an email. Admins could build a custom survey in no time.

  • Admins could set rules on numerical questions, geographic boundaries on GPS points, selection limits for multiple choice questions, and more.

  • Layers of skip logic made each form quicker and easier. Admins can choose to link together multiple questions, or even link entire forms.

Real-time data collection
Optimized for low-tech users
No internet needed
Works on low-cost Android phones
  • Responses were collected after the first time people used GravityLight. This data immediately was available to administrators across the world.

  • Training their field staff was a breeze with Collect’s intuitive interface, which ensures that no one has a problem collecting data.

  • Kenya is prone to bad cell service. Collected data was continuously saved to phones' local storage, then synced when internet was available.

  • In remote areas of Kenya, staff didn't necessarily have access to high-end phones. Collect works seamlessly even on outdated, cheap Android phones.

Learn more about Collect

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