SINISTER OS
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TESTIMONIALS

Signed feedback from the founders and owners behind the cases (Qatar,UAE, US). Same order as the cases tab.

EPEOPLE — Healthcare Workforce Ecosystem

“Four years in, they still argue with me about my own feature requests — and they've been right more often than I care to admit.”

I run care facilities, not software companies — though I've started a few of those too. Before Sinister I'd paid two different teams to build our staffing and compliance system. Both of them demoed beautifully and both fell apart the first week a charge nurse actually touched them. Sinister asked to sit through a shift change before they wrote a line of code. When my scheduler told them the open-shift screen didn't match how she fills a call-out at six in the morning, they didn't send back a memo explaining why she was mistaken. They rebuilt it. Compliance is the part of my business that can close a facility overnight, and it's the part they took most seriously. Four years in, they still argue with me about my own feature requests, and they've been right more often than I care to admit.

Stan StukovOwner of Healthcare Facilities in California; Founder of Multiple Startups
open full_case_study.md

RECOVERED — Human Performance & Recovery App

“About half of the spec I walked in with never shipped. The app is better for it.”

I run a software company. Hiring another one is a strange thing to do — you know exactly where the corners get cut. Recovered had one genuinely hard question. What does a readiness score tell someone who slept four hours and still has to go to work? Get that wrong and nobody trusts the number a second time. Sinister argued with us about it for two weeks before anyone touched a design tool. About half of the spec I walked in with never shipped. The app is better for it. I don't say that about vendors often.

Mikhail GavrilovFounder of Leapsoft; Serial IT Entrepreneur
open full_case_study.md

MB HOUSE — Car Tuning E-commerce Platform

“My guys run the whole thing themselves now. I don't have to call a programmer every time.”

Before the website, if you wanted work done on your car you called me and I gave you a price off the top of my head. Now it's all online. You pick your car, you see what we can do to it and what it costs. My guys run the whole thing themselves now — I don't have to call a programmer every time something needs changing. At the start they asked me a lot of questions I didn't see the point of. Turned out the questions were the right ones. Happy with it.

Egor BardoFounder & Owner, MB House
open full_case_study.md

CARAVEL — Online Store, CRM & ERP for SMEs in MENA

“They asked me more about our invoicing than about our homepage.”

Our situation was always difficult to explain to developers outside the region. Our customers pay through methods that a standard checkout simply does not offer, and most of them are shopping from a phone close to midnight. Behind the counter it is a very small operation — a great deal of the business still runs off one laptop. Sinister spent the first weeks understanding how we actually take payment and move stock, before they designed a single screen of the storefront. They asked me more about our invoicing than about our homepage, and that was the moment I understood they had built for a working business before, not only a handsome one. Two years on, my team opens that admin panel every morning, and they have never once asked me to redesign it.

Founder & Managing Director, CaravelName withheld at the client's request
open full_case_study.md

WATERGURU — Smart Pool Water Monitoring System

“I wanted every reading on the screen. They shipped one line telling you what to do. Fewer support calls. They were right.”

I wanted the app to show every reading the sensor takes. Sinister said no — most people just want to know what to put in the pool and how much. I argued. They were right. We got fewer support calls once it shipped their way. There are tens of thousands of pools on it now. I don't hand out praise to vendors, but I was wrong on this one and they weren't.

Stan StukovFounder / Product Owner, WaterGuru
open full_case_study.md

TEAM 13 — Nationwide Motorcycle Community Platform

“We missed the date by a week. I've worked with teams that hit the date and cost me the client.”

I brought Sinister in as a subcontractor, which means it was my name on the line, not theirs. Team 13 looks trivial from the outside — routes, chats, events, a news feed. It isn't. There is a roadside-help button that has to work when a rider is standing on the shoulder of a motorway with a dead bike and one bar of signal, and that button is the one most teams go quiet about. In the first week Sinister told me exactly which parts they weren't sure of and how they meant to test them. Then we missed the launch by a week, because they wouldn't ship that button until it actually worked out in the field instead of on office Wi-Fi. I've worked with teams that hit the date and cost me the client. I'll take the honest week.

Dmitry VolkovCEO, Glasson IT
open full_case_study.md

INTERACTA — Interactive Storytelling Dating App

“They told me my idea would bore people by the third screen — and showed me why. That's what saved it.”

I fix and tune cars for a living, so a dating app was a strange thing for me to put money into. My idea was that people should get to know each other through a story instead of a photo. Everyone I told about it just smiled and changed the subject. Sinister actually told me the truth: the version in my head would bore people by the third screen, and they showed me why. That cost me about two months and saved the whole thing. Looking back, they were too nice about how bad my first idea was.

Egor BardoOwner of a Tuning Atelier in Toronto; Startup Founder
open full_case_study.md