01Social · Mobile
Debatable
A social debate app where the crowd settles the wildest arguments.
View work →Custom software studio · serving the US
SOFTWAREFOR USCOMPANIESTHAT SHIPS.
Prysmus designs and builds custom software for US companies. Product, brand and growth, refracted from a single idea and built with design, motion and craft most dev shops can't execute.
What we do
We turn an idea into aworking product. US companies come toPrysmus when an off-the-shelf tool stopsfitting and an internal team isstretched. We take the whole thing,the design, the engineering, the launch,and we ship software that looksand performs like a flagship product.
(Services)01
What we build for the United States
Web platforms, internal tools and SaaS built from scratch around how your business actually works, not a template forced to fit.
iOS and Android products with native-grade motion and polish, shipped to the App Store and Play Store and maintained past launch.
Interface, brand and motion designed together, so the software looks and feels like a product people trust, not an internal admin panel.
Practical AI woven into your product where it earns its place, from assistants to automation, on the latest Claude and frontier models.
Marketing sites and funnels engineered for speed, search and conversion, with the same craft as the product itself.
A team that stays. Iteration, support and roadmap work after launch, with one accountable point of contact.
(Recognition)04
20+
★★★★★
products shipped · Top Rated Plus on Upwork
Trusted by founders across the US, the Gulf and beyond.
”
They built exactly what we imagined and then made it better. The design and polish are on another level.
Founder, marketplace platform
Selected work01 / 04
02Events · Gulf
Lahtha
An event-planning platform for the Gulf, from vendor marketplace to bookings.
View work →03Social · iOS
Remnants
A location-based social memory app for iOS, with a custom backend.
View work →04Logistics · On-demand
Zaseva
An on-demand marine delivery platform, designed and built end to end.
View work →
+8More projectsView all work →
(Clients)03
Brands we've built.
RainyLeadsStackbitsAamarWalletSaketnaValEngineersHolo StreetRoveRainyLeadsStackbitsAamarWalletSaketnaValEngineersHolo StreetRoveRainyLeadsStackbitsAamarWalletSaketnaValEngineersHolo StreetRoveRainyLeadsStackbitsAamarWalletSaketnaValEngineersHolo StreetRoveRoveHolo StreetValEngineersSaketnaAamarWalletStackbitsRainyLeadsRoveHolo StreetValEngineersSaketnaAamarWalletStackbitsRainyLeadsRoveHolo StreetValEngineersSaketnaAamarWalletStackbitsRainyLeadsRoveHolo StreetValEngineersSaketnaAamarWalletStackbitsRainyLeads
RoveHolo StreetValEngineersSaketnaAamarWalletStackbitsRainyLeadsRoveHolo StreetValEngineersSaketnaAamarWalletStackbitsRainyLeadsRoveHolo StreetValEngineersSaketnaAamarWalletStackbitsRainyLeadsWhy companies in the United States choose Prysmus
01
Time-zone overlap
We work across US business hours, with real-time communication and one accountable contact, not a handoff to a queue overnight.
02
Top Rated Plus, proven
A Top Rated Plus track record with 20+ products shipped and a wall of five-star reviews from founders and operators who came back for more.
03
Design that converts
Most dev shops can engineer. Few can make it feel premium. We do both, so your software earns trust the moment someone opens it.
04
Senior, end to end
No junior bench, no telephone game. The people who scope your project are the people who design and build it.
Frequently asked
Do you work with US startups and established companies?
Both. We have shipped products for early-stage founders raising their first round and for established operators replacing software they outgrew.
Where is Prysmus based?
Prysmus works worldwide and partners with companies across the US, the Gulf and Europe, with communication aligned to your business hours.
What does a custom software project cost?
Projects are scoped and priced per milestone, so you see exactly what each phase delivers before it starts. Most engagements begin with a focused first build.