Four Nigerians have earned spots on the prestigious Africa prize for Engineering Innovation shortlist. The Prize recognizes the most promising entrepreneurial engineers from across sub-Saharan Africa.

Elizabeth Kperrun – the first Nigerian woman to ever make it onto the Africa Prize shortlist – developed Zenafri. This is a series of mobile apps that teach toddlers and young children basic numeracy and literacy in their own language.

Teseem, the first app, teaches toddlers their first words and numeracy in vernacular languages such as Hausa, Igbo, Yoruba and Swahili.  When children get old enough to follow story lines, Afrotalez narrates original stories based on traditional African folklore, with an educational element added in.

Developed while pregnant with her own child, Zenafri had been an idea of Kperrun’s for years. After recruiting a secondary school classmate to develop the app, Kperrun and colleague Eremia married, and three years later, their daughter is an avid tester of their apps.

Today, Zenafri apps have been downloaded more than 100,000 times, with about 1,200 users logging on every day. The team continually improves the apps using feedback from current users, and has also launched a decision-based storytelling app for teenagers.

Professor Dele Sanni developed the 3-D-3-P dryer is a simple system that dries grains and cereals using conduction rather than hot air, conventionally used in industrial dryers.

Sanni’s system, developed over more than six years in conjunction with students of his over the years, is far more affordable than conventional dryers. Based on the same principle as simply heating grain in a pan over fire, a series of three drums are heated to directly dry out the grains travelling through them. Rollers ensure that grains don’t burn, and the gas heating the system is adjustable at each stage.

As an alternative to drying grains in the sun – a method used by the majority of farmers who cannot afford industrial dryers – the 3-D-3-P dryer is faster and safer. Thousands of Nigerians buy spent grains from local breweries to dry out and use as animal feed – but incur losses through sun drying from animals, and due to fermentation from humidity. Two pilot machines have been sold, and are being used to dry out sawdust before the high-energy waste product is turned into briquettes for sale to European countries.

“There’s a common perception that imported technology is better, but the 3-D-3-P dryer is a locally made, appropriate and affordable solution to so many problems faced by hard-working Nigerian farmers,” said Sanni.

Another innovation on the shortlist is WellNewMe. Designed by Dr Obi Igbokwe, the assessment tool uses algorithms to analyse users’ risks of contracting non-communicable diseases such as cancer, diabetes and hypertension.

Using years of experience from medical professions, research, and algorithms, the system takes data provided by individual users to predict the risks each faces from their lifestyles, genetics and environment. Users provide simple data such as family history and habits, but also supplement it with blood pressure, blood sugar and other readings from clinics or pharmacies.

Igbokwe, a medical doctor who taught himself to code, created the system in order to give people more insight into their own health. WellNewMe is aimed at pharmacies, clinics, and employers, but will be available to every day online users as well. The data, anonymised, will be shared with government healthcare advisors who are planning resources across the country, further removing guess-work from the approach the public sector takes to non-communicable diseases.

The KAOSHI mobile app, developed by Chukwunonso Arinze, connects money senders across the globe. The app facilitates a peer to peer money swap, circumventing the need to literally send money across borders.

The app tackles the high cost of transferring money to and between African countries, and the hassle of long queues at financial institutions, or buying forex on the black market.

Instead, it allows users who want to send money in opposite directions to swap between themselves, which is cheaper and more convenient.

KAOSHI connects users both within and outside of Africa, allowing each to specify the currencies they want to exchange and matching them to users making inverse exchanges.

“We want to do for international money transfer what peer to peer systems like mobile money has done for domestic payments. Imagine a mother in Ghana being able to send money to her son in California from her mobile phone – KAOSHI is the first of its kind!” said Arinze.

The Africa Prize, which is celebrating its fifth year, is run by the Royal Academy of Engineering. It provides a unique package of support, including funding, comprehensive business training, bespoke mentoring and access to the Academy’s network of high profile, experienced engineers and business development experts.

As well as the chance of winning up to £25,000, each of the 16 shortlisted engineers will develop skills that last a lifetime, and become part of a growing community of talented African engineers working to accelerate socio-economic development through business. The shortlist come from six countries, with five female engineers among them.

“The shortlist has come to represent the most talented engineers on the continent,” said Rebecca Enonchong, Africa Prize judge and Cameroonian entrepreneur.

“Through the Africa Prize, we’ve seen cutting edge technologies and world-firsts develop into businesses that manufacture locally, and drive research and development on the continent. We can’t wait to meet the new group of engineering pioneers.”

After seven months’ mentoring and training, four finalists will be selected from the shortlist. In June 2019 the finalists will present their businesses to judges in front of a live audience in Kampala, after which one winner will receive £25,000, and three runners up will be awarded £10,000 each.