
FileFly | Share & Upload Files
iOS App + Web App — File Sharing Utility, Credit-Based IAP
- Live iOS app on the App Store — Productivity category
- approved and shipping
- iOS 15.1+ support
- Apple Silicon Mac and Vision Pro compatibility
We build mobile apps for iPhone and Android — from the first sketch to the day it goes live in the stores. A fixed price, a clear date, and one person who answers every question.
Your app
Launch day
Live in the App Store
6 weeks
From first sketch to launch
4.9
Store rating
0
Crashes
This week

Six capabilities that cover a product end to end. Most engagements use three or four of them at once.
Complete projects you can take over today — full source, documentation and handover included.

iOS App + Web App — File Sharing Utility, Credit-Based IAP

Lodestone reads your phone's built-in magnetometer and turns raw magnetic data into something you can act on. No extra hardware. No account. Works offline.

Speak naturally while XEMINO analyzes your clarity, pace, pauses, filler words and confidence in real time — with short, personalized tips to help you improve.

Discover your visual heritage profile from a single photo. Explore ancestry-inspired estimates, regional similarities, and personalized insights.

You take care of your pet. We remember when.

Spark is a dating coach, not another swiping app. It works with the apps you already use.

Discover what’s in your glass. Scan wine bottles, explore pairings, ask your Sommelier, and build your personal wine list.

Take a moment to breathe. Calm your mind, prepare for sleep, improve focus, and reset with simple guided breathing exercises.

Track CO₂ & Eco AI-powered
A senior engineer who writes every line, and a managing director who owns the commercials. No juniors billed as seniors, no ticket queue between you and the code.
Every line is written by an engineer with a decade of production experience. Nothing gets delegated to someone learning on your budget.
A shared channel with both founders. No ticket queue, no account manager translating your question into a worse question.
You pay for engineering, not for a hierarchy. The person who scoped your project is the person who builds and ships it.
Fixed scope, fixed range, written down. When something changes we tell you what it costs before we build it, not after.
Lighthouse budgets, cold-start targets and p95 latency goals are written into the scope and verified before launch.
Documented, tested, conventional code. If you hire an in-house team tomorrow, they will not need us to explain it.
The same process every time, whether it is a two-week integration or a six-month platform build.
You send the problem, the constraints and the deadline that actually matters. Both founders read it — including the engineer who would build it — and reply by email the same working day. No account manager relay, nothing to schedule.
We turn the idea into a written scope: user flows, data model, integrations, risks and the parts we recommend cutting from v1.
Interface design and a clickable prototype so decisions get made against something real instead of a description in a document.
Two-week cycles with a working build at the end of every week. You get a demo link, a changelog and direct access to us in a shared channel.
Automated tests, device matrix runs, load checks, accessibility pass and a security review before anything reaches real users.
Store submission, deploy pipeline, monitoring and alerting. Then a support agreement sized to what you actually need — often a few hours a month.
Tools with long support horizons and large hiring pools, so the product outlives the engagement. Novelty is reserved for your product, not your infrastructure.
Unedited apart from length. Most of these people hired us again.
“We had been through two agencies before. The difference here is that the people writing the code are the people in the call. Decisions took minutes instead of a sprint.”
Testimonial 1 of 6
Send us the details and you get an automatic confirmation straight away, then a written feasibility read and budget range from one of the founders. All by email, no calls to schedule.
Or email us directly at info@kellosolutions.com