---
title: "Grindstone"
description: "Grindstone Ventures is an early stage investment vehicle associated with the Grindstone accelerator in South Africa. Public information describes Grindstone primarily as a structured entrepreneurship development and startup accelerator program that works with high growth, innovation driven companies, and is linked to venture capital firm Knife Capital and partners based in South Africa. Given the available official information, Grindstone is best understood as a combination of accelerator program and affiliated early stage venture investor. In Africa, Grindstone focuses on supporting and funding high growth startups at the seed and early venture stages. Based on disclosed deals, Grindstone has participated in at least six funding rounds between August 2020 and May 2023, primarily for South African companies at the seed stage and in unspecified venture rounds. Its portfolio activity in Africa includes a concentration in education technology and skills development, HR and talent platforms, health related technology, and financial technology, with all known investments in South Africa. The portfolio associated with Grindstone in Africa includes companies such as Play Sense, Four Minute Medicine, LocumBase, Sticitt, and Zaio, which are focused on sectors like EdTech, HR and talent, health tech, and fintech. These investments reflect an emphasis on technology enabled services that improve access to education, healthcare staffing, payments, and digital skills development in the South African market."
canonical_url: "https://liners.com/investors/grindstone"
markdown_url: "https://liners.com/investors/grindstone.md"
type: "investor"
language: "en"
image: "https://assets.liners.com/storage/v1/object/public/media/investors/grindstone/favicon.png?v=1785330063850"
updated_at: "2026-08-25T03:02:22.474Z"
---

# Grindstone

Grindstone Ventures is an early stage investment vehicle associated with the Grindstone accelerator in South Africa. Public information describes Grindstone primarily as a structured entrepreneurship development and startup accelerator program that works with high growth, innovation driven companies, and is linked to venture capital firm Knife Capital and partners based in South Africa. Given the available official information, Grindstone is best understood as a combination of accelerator program and affiliated early stage venture investor. In Africa, Grindstone focuses on supporting and funding high growth startups at the seed and early venture stages. Based on disclosed deals, Grindstone has participated in at least six funding rounds between August 2020 and May 2023, primarily for South African companies at the seed stage and in unspecified venture rounds. Its portfolio activity in Africa includes a concentration in education technology and skills development, HR and talent platforms, health related technology, and financial technology, with all known investments in South Africa. The portfolio associated with Grindstone in Africa includes companies such as Play Sense, Four Minute Medicine, LocumBase, Sticitt, and Zaio, which are focused on sectors like EdTech, HR and talent, health tech, and fintech. These investments reflect an emphasis on technology enabled services that improve access to education, healthcare staffing, payments, and digital skills development in the South African market.

## Breadcrumbs

- [Investors](/investors)
- [Grindstone](/investors/grindstone)

## Summary

Grindstone Ventures is an early stage investment vehicle associated with the Grindstone accelerator in South Africa. Public information describes Grindstone primarily as a structured entrepreneurship development and startup accelerator program that works with high growth, innovation driven companies, and is linked to venture capital firm Knife Capital and partners based in South Africa. Given the available official information, Grindstone is best understood as a combination of accelerator program and affiliated early stage venture investor. In Africa, Grindstone focuses on supporting and funding high growth startups at the seed and early venture stages. Based on disclosed deals, Grindstone has participated in at least six funding rounds between August 2020 and May 2023, primarily for South African companies at the seed stage and in unspecified venture rounds. Its portfolio activity in Africa includes a concentration in education technology and skills development, HR and talent platforms, health related technology, and financial technology, with all known investments in South Africa. The portfolio associated with Grindstone in Africa includes companies such as Play Sense, Four Minute Medicine, LocumBase, Sticitt, and Zaio, which are focused on sectors like EdTech, HR and talent, health tech, and fintech. These investments reflect an emphasis on technology enabled services that improve access to education, healthcare staffing, payments, and digital skills development in the South African market.

## Recorded investments

| Product | URL | Stage | Amount | Date |
| --- | --- | --- | --- | --- |
| Play Sense | /play-sense | Venture (Round not Specified) |  | 2023-05-01T00:00:00.000Z |
| Four Minute Medicine | /four-minute-medicine | Seed |  | 2023-01-01T00:00:00.000Z |
| Sticitt | /sticitt | Seed |  | 2022-03-01T00:00:00.000Z |
| Zaio | /zaio | Seed |  | 2020-08-01T00:00:00.000Z |

## Related pages

- [All investors](/investors)
- [Funding rounds](/funding)

## Access and citation

- [Canonical HTML page](https://liners.com/investors/grindstone)
- [Markdown route index](/sitemap.md)
- [Agent access guide](/llms.txt)