Thinking out loud {{ FIRSTNAME | there }}? A startup has decided to try end typing and smart glasses in one fell swoop. They want you to wear smart beanies and caps that read your thoughts to chat to your AI instead. 🧢

☝ Send this to that one friend who's forever wearing a hat. 👑

In Today’s Open Letter

SA’s R460 billion agri industry is a vital part of SA’s growth, but it suffers from severe technical skills shortages – so this local venture’s looking to build SA’s farming OS…

Any farmer will tell you that the exact conditions (soil, microclimate, etc.) from one patch of land to the next can be vastly different. And knowing how to grow what, where, when and why is an absolute art form.

The industry’s answer is formalised training of what they call crop consultants or advisors. The problem is that these take around five years to train, plus another two to hone their skills in the field (almost the same time as a doctor).

It’s hard-won knowledge that compounds slowly and then lives in one place: the advisor's head. Often, literally in a brown folder of handwritten notes that no one else can read.

One SA venture looked at that and said there must be a better way to help SA agri build up this type of institutional knowledge…

The startup giving agricultural advisors a memory that never leaves

PropelMapper is building the operating system for agricultural advisors. It captures field observations by voice, structures them automatically, and turns individual advisor knowledge into institutional intelligence.

We caught up with co-founders Reghardt Pretorius and Mark Donne, and VP of Applied Solutions Christine van Wyk, who say PropelMapper is built around the advisor (not the farmer), extending their reach with geolocated field data to pull weather history and forecasts, or multispectral satellite imagery to give 24/7 views to spot crop stress or other warning signs, even when they’re not physically there.

The value lies in the field data

Unlike most AI startups, PropelMapper doesn’t own your data, so it won’t train anything on it – your hard-won 20 years of knowledge stays yours. A nice layer of trust, there. 

Founded in SA, incorporated in the US, PropelMapper runs its engineering team out of Pretoria while Mark leads US ops, including an almond, macadamia and tree fruit advisory firm in California, a farmland management company operating across 25 US states, and trials with Cornell University underway…

We're watching this space…

Can ChatGPT finally stop making things up? OpenAI's GPT-5.5 Instant halved hallucinations on high-stakes prompts in medicine, law and finance — and cut inaccurate claims by 37% on user-flagged conversations. Read more here.

What if your AI could read 12 million tokens at once? SubQ launched with $25M in seed funding as the first commercial LLM with a native 12M-token context window at roughly a fifth of the cost of frontier models. Check it out here.

Can SA banks share intelligence without sharing data? Praelexis is building federated learning systems that let organisations like banks train AI models together while keeping internal data completely secure. See how it works here.

South African businesses spend a fortune trying to get in front of their customers. Building followers, developing and growing apps and followings, paying for ad impressions and hoping the algorithm cooperates…

Meanwhile, there’s a channel your customers already check 23+ times a day. They don’t need to download anything or opt in; they’re already there every morning, every lunch break, every evening.

WhatsApp has 98% penetration in SA among internet users. And marketing messages sent through the platform see 85–95% open rates and 15–20% click-through rates. Not because the content is louder. Because it lands inside a behaviour that’s already happening.

The brands getting this right aren’t building new channels; they’re meeting customers where they already live. Is your business one of them?

🤖 Mzansi Gets Its Own Bot. Researchers at the University of Cape Town have built a language model, MzansiLM, trained on a curated multilingual dataset covering SA's 11 official written languages. Whoa.

🇿🇦 SA's High Flyers. South Africa's private sector has just had its strongest growth in almost 4 years, with export demand from Zambia and the DRC driving the surge. We unpack what this means for builders in Africa.

🩻 Meta's X-ray Check. Mark Zuckerberg wants to take a closer look at your bones to determine if you're old enough to use Meta sites. As more countries clamp down on teen social media usage, Meta's got some Creepazoid 5000 age verification features incoming.

🪪 Another Thing to Renew in SA. SA's Department of Home Affairs has gazetted draft regulation that could bring digital IDs to South Africa. You know, so it's more convenient. Only caveat is that the ID will only be valid for 5 years. So, was this law also written by AI or what?

🎨 Best Product, Worst Brand. It's costing SA tech and fintech companies more deals than they realise. One agency has built its entire practice around fixing this — specifically for high-trust industries. More next week. Watch this space →*

* From our partners. Find all the best service providers for your business in our Founder Stack.

When you start out, ideas are lifeblood. But as your company grows, more people with more ideas in the backlog can become a tech and cost burden that drags you down. That’s why we got an SA expert in UX and branding to come show us how to identify which feature ideas to build and which to skip.

Turns out there’s a powerful 5-step process you can follow to test every feature idea before you commit resources to it.

Yesterday, we showed you Locstat’s banking fraud detection, asking how paranoid you are about banking scams now. Most are pretty distrustful…

🟨⬜️⬜️⬜️⬜️⬜️ 👑 That Nigerian prince taught me valuable life lessons (8%)

🟨🟨🟨⬜️⬜️⬜️ 📞 I interrogate bank callers like I'm SAPS now (22%)

🟨🟨⬜️⬜️⬜️⬜️ 🧠 If you ask for an OTP, you're dead to me (20%)

🟨⬜️⬜️⬜️⬜️⬜️ 😳 I almost got cooked once — never again (4%)

🟩🟩🟩🟩🟩🟩 💸 Yoh… trust issues are now part of my personality (46%)

Your 2 cents…

Phew, hot take, Hanti. Just imagine if that were true… 🏦👀

82% of SA is online, but for most, that means your phone and nothing else.

💡 Over 75% of South Africans access the internet via mobile data, with KwaZulu-Natal highest at 80%.

💡 Fixed home internet reaches just 17.4% of the population — the Western Cape leads at 44.9%.

For founders: If your product doesn't work beautifully on a phone over mobile data, you're building for only 17% of the country.

🧩 Tool to Try: Renowide lets you hire AI agents for finance, marketing, whatever.

🎸 That's Interesting: Led Zeppelin took their name from a joke that the band would "go down like a lead balloon" — they just swapped balloon for zeppelin and dropped the “a” from lead. Read more.

💎 Next Level: This natural malachite gemstone looks impossibly velvety.

🔐 Wow Site: Knock Knock visualises internet bots trying to break into computers around the world, in real time.