कमाई Kamaai · Issue #1 · 15 November 2026
Blue tea to tattoo stencils: 5 small ideas that already pay
by Nikhil Sharma
Welcome to Kamaai. Every fortnight I will bring you five businesses that already make money. Not pitch decks. Not valuations. Real revenue from real customers.
Three are from India and two are from the rest of the world. For the world ones I will also tell you how an Indian founder could build the Indian version. Every number here comes from a source you can open and check. Where a figure is the founder's own claim I say so.
This issue has a theme without trying. Each of these founders picked a narrow customer that bigger players ignored. A curly-haired woman. A tattoo artist tracing stencils by hand. A doctor in a badly fitted scrub suit. Narrow is not small. Read on.
1. Blue Tea (India)
Who: Nitesh Singh and Sunil Chandra Saha. What: Herbal wellness teas led by butterfly pea flower (aparajita) blends. Revenue: ₹36.7 crore in FY25 (about ₹3 crore a month). Target of ₹64–65 crore for FY26.
Blue Tea sells caffeine-free herbal teas. The hero is butterfly pea flower. Most of us know it as the blue aparajita flower in the garden. The range now runs to more than 200 SKUs including chamomile and hibiscus blends.
The brand began in 2018 as per Entrackr. Inc42 reports it launched with ₹50,000 of capital and has not raised outside money since. They wanted herbal tea that tastes good and does not feel like medicine.
Revenue went from ₹25.25 crore in FY24 to ₹36.69 crore in FY25. By January 2026 it had already crossed ₹52 crore for the year as per Entrackr. The company says it has stayed profitable and has over 25 lakh customers.
Growth came from repeat buyers and not from heavy ad spend. Its own website brings about half of India sales. Quick commerce on Blinkit Zepto and Flipkart Minutes grew sharply in six months. Nearly 59% of domestic sales come from outside the big metros. It sources from more than 600 farmers and makes its tea in a 20,000 sq ft unit in Kolkata.
The idea you can copy: take one Indian herb or ingredient that people already know and make it the hero of a brand. Think moringa or shankhpushpi or kokum. Tell one clear benefit per product and do not jump categories early. Sell on your own site first so you keep the repeat buyer. Then add quick commerce for discovery.
Where AI makes it cheaper: product photos and listing copy in five languages can be made in a day. A WhatsApp assistant can answer the same twenty questions about brewing and benefits. Keep health claims honest and within FSSAI rules.
Sources: Inc42: How Blue Tea Grew To ₹36.7 Cr Within Seven Years (19 Feb 2026) · Entrackr: Profitable bootstrapped D2C brand Blue Tea projects Rs 65 Cr sales in FY26 (2 Mar 2026)
2. Stencil AI (World)
Who: Simon Turkovič, solo founder. What: A phone app that turns any photo or sketch into a print-ready tattoo stencil. Revenue: $48,796 a month in recurring subscriptions (about ₹41 lakh), verified on TrustMRR via RevenueCat
Before a tattoo session an artist traces the design by hand into a stencil. It can take hours. Stencil AI does it in seconds from a photo or a sketch. That is the whole product.
Simon Turkovič built it alone. His TrustMRR profile says he started in January 2026 and has no outside funding. It runs on iOS and Android in 16 languages.
By 14 November 2026 TrustMRR showed $48,796 in monthly recurring revenue from 1,743 active subscriptions. All-time revenue was $481,074 (about ₹4 crore). TrustMRR pulls these numbers straight from the app's RevenueCat account. So this is not a screenshot claim.
Pricing is plain. Hobby is $13.99 a month. Pro is $29.99. A studio plan starts at $69.99 for two artists. The founder lists app store search and SEO as channels along with short videos on Instagram TikTok YouTube and Pinterest. Tattoo work is visual. So a short before-and-after video shows the product better than any ad copy.
The idea you can copy: find a skilled trade where people still do one boring step by hand before the real work begins. Build an app that does only that step. Charge the professional a monthly fee because it saves them paid hours.
The Indian version: a stencil and design app for mehendi artists. Wedding season brings lakhs of bookings and artists still draw from memory or WhatsApp photos. Let a bride upload a photo of her outfit or a design she likes and get a clean mehendi pattern sized to her hand. Add rangoli and Indian tattoo studios later. Price it at ₹299–999 a month on UPI autopay. Today one developer can build this with image models and an off-the-shelf app framework. That is exactly how Simon did it.
Sources: TrustMRR: Stencil AI verified revenue profile (data as on 14 Nov 2026)
3. Knya (India)
Who: Abhijeet Kaji and Vanshika Kaji, husband-and-wife founders. What: Scrubs lab coats and workwear for doctors nurses and medical students. Revenue: ₹110 crore in FY26 with ₹10 crore profit after tax (company-reported to Inc42)
Doctors and nurses wear scrubs every working day. Few of us would think of that as a brand category. Knya does. It sells scrubs lab coats performance workwear winter jackets and even stethoscopes across more than 700 SKUs.
Revenue rose from ₹60 crore in FY25 to ₹110 crore in FY26. Profit after tax went from ₹3 crore to ₹10 crore. These figures were shared with Inc42 by co-founder Abhijeet Kaji.
It has raised only about ₹16 crore in equity. Backers include DSG Consumer Partners and Dr Devi Shetty.
The surprise is the channel mix. About 85% of sales come from Knya's own website and app. Its own stores bring 5–7%. Marketplaces bring the rest. That is rare for an Indian apparel brand and it means Knya owns its customer relationships.
The idea you can copy: pick a profession that wears a uniform every day but buys it from whoever is nearest. Make the best version of that uniform and sell it on your own site. Chefs and hotel staff. Salon and spa teams. Lab technicians. Factory supervisors. Even advocates' gowns and bands. Students in that profession are your first and most loyal buyers.
Where AI makes it cheaper: a size-finder that asks five questions cuts returns. AI-generated catalogue shoots on diverse models save lakhs in photography. A small team can now run a full D2C store that once needed a dozen people.
Sources: Inc42: Knya FY26: Revenue Crosses ₹100 Cr Mark, PAT Jumps 3X YoY (8 Aug 2026) · DSG Consumer Partners: Knya brand page (accessed 15 Nov 2026)
4. Cal AI (World)
Who: Zach Yadegari and Henry Langmack (high-school friends, 18 in March 2025) with Blake Anderson and COO Jake Castillo. What: Take a photo of your plate and the app logs calories and macros. Revenue: Over $30 million a year (about ₹250 crore) as per its buyer MyFitnessPal
Counting calories is tedious. You search for each food and guess the portion. Cal AI asks you to take a photo instead. It uses AI models from Anthropic and OpenAI to estimate what is on the plate. The founders told TechCrunch it is about 90% accurate. That is good enough for most dieters.
Two school friends built it while still in high school. In March 2025 Zach Yadegari said the app had made over $2 million in the previous month. TechCrunch noted it could not verify that claim at the time. Their COO Jake Castillo ran influencer marketing.
The verified number came later. In March 2026 MyFitnessPal announced it had bought Cal AI. It told TechCrunch the app had crossed $30 million in annual revenue and 15 million downloads in under two years. The team was just seven employees plus a few contractors.
Zach has since left and raised $10 million for a new startup. Cal AI still runs as a separate app inside MyFitnessPal.
The idea you can copy: take a habit people already want to keep and remove the most annoying step with a phone camera. Then sell it as a subscription and market it through creators who live that habit.
The Indian version: a photo calorie app built for Indian plates. A thali is a hard plate to read. Two rotis with dal and sabzi plus a katori of curd and a spoon of ghee all count. Build an Indian food dataset that knows ghee and regional dishes and home portions. Add Hindi and regional-language voice logging. Partner with gyms dieticians and fitness creators instead of buying ads. The heavy lifting is now an API call to a vision model. Your real moat is the Indian food data and the distribution.
Sources: TechCrunch: MyFitnessPal has acquired Cal AI, the viral calorie app built by teens (2 Mar 2026) · TechCrunch: Photo calorie app Cal AI, downloaded over a million times, was built by two teenagers (16 Mar 2025) · TechCrunch: Cal AI's 19-year-old founder just raised $10M for his new AI startup (8 Oct 2026)
5. Fix My Curls (India)
Who: Anshita Mehrotra. What: Curl-care routines made for Indian humidity and hard water. Revenue: ₹21.4 crore in FY25 (about ₹1.8 crore a month) up from ₹8.7 crore in FY24
Anshita Mehrotra has curly hair. She found that curl products made for Western weather did not hold up in Indian humidity and hard water. Affordable Indian options barely existed. So in 2019 she started Fix My Curls.
The brand sells full routines for washing conditioning and styling rather than one hero product. It now has more than 55 SKUs. Best-sellers include a hair butter a leave-in cream and a flaxseed gel. Manufacturing is done by Fixderma India in Neemrana.
Revenue grew from ₹8.73 crore in FY24 to ₹21.42 crore in FY25. That is 145% growth in a year. It had made ₹18 crore of FY26 by the time Inc42 reported in February 2026. Inc42 did not disclose profit or funding.
Growth came from teaching rather than ads. Instagram tutorials explained how to care for wavy and curly hair. Marketplaces bring 45% of sales and quick commerce brings 30%. It now sells in Germany Romania and Saudi Arabia too.
The idea you can copy: find a group of Indian customers whose bodies or homes are different from what global brands design for. Then build for that difference. Curly hair was one. Others could be Indian skin in a humid summer. Hard-water homes. Larger foot widths. Hands that cook with turmeric every day.
Teach first and sell second. A free hair-type or skin-type quiz plus short tutorials can build the community before your first big launch. AI makes this cheap today. A quiz that recommends a routine can be built in a weekend. Scripts and captions for daily Reels take minutes. Keep a real expert in the loop for anything that touches skin or scalp.
Sources: Inc42: How Fix My Curls Grew To ₹21.4 Cr Within Six Years (18 Feb 2026)
Look at the pattern. None of these five won by being clever with money. They won by choosing one customer and serving them better than anyone else did. AI now makes the building part cheaper than ever. The choosing part is still your job.
If one of these ideas keeps you up tonight write and tell me which one. I read every message. See you in a fortnight. Nikhil