Kinsera
Lifestyle
Newv1.0.0
Clear, private, family-first digital limits.
Set app, category, and website limits with timers, schedules, pauses, and aggregate reports that work on the device itself.
iOSiPadOS
Native iOS apps · Software on the App Store
Apps that solve a real problem, not an MVP that dies at launch.
iOS products built to be used every day: research, UX, backend, privacy and continuous evolution owned by a single person.
Kinsera, VitalsPath, StreakReps, MaskID and Renuvia are available; Culmina, VitalsBud, SnapInbox: Action Inbox, SchoolSnap and UpLedger are in preparation.
Lifestyle
Kinsera
A real product preview · rotates automatically
RomeroDev apps
Native · App Store
Apple
Native experience
Status
5 published apps
10owned products
34VitalsPath languages
9xSalesforce certifications
10+years of experience
Selected work
Not concepts. Products built to be used.
Each product combines research, native experience, automation and a technical foundation designed to evolve after launch, whether it is available today or being prepared.
VitalsPath
Medical
5.0v2.2.4
Family health, medications, and appointments in a single private space.
Organize medications, symptoms, vitals, appointments, and shared care with family profiles, Apple Watch, and medical reports.
iOSiPadOSwatchOS
StreakReps
Health & Fitness
5.0v1.0.8
Workout tracking for consistent strength progress.
Plan workouts, log every set from iPhone or Apple Watch and understand strength, recovery, volume and consistency.
iOSwatchOS
MaskID
Productivity
5.0v1.0.8
Protect your identity before sharing a document.
Hide unnecessary personal data in general or identity documents and share only what each process requires.
iOSiPadOS
Renuvia
Productivity
Newv1.0.0
Turn every renewal into a dossier ready for action.
A private radar that turns renewal dates into dossiers with readiness, requirements, and history.
iOSiPadOS
Culmina
Turn complex projects into completed outcomes.
iOSiPadOS
View product page
VitalsBud
Pet health, routines, and veterinary records for your home.
iOSiPadOS
View product page
SnapInbox: Action Inbox
Turn screenshots into verified next steps.
iOSiPadOS
View product page
SchoolSnap
Turn every school notice into a clear family plan.
iOSiPadOS
View product page
UpLedger
Clear, private finances under your control.
iOSiPadOS
View product pageCapabilities
A complete view prevents fragmented products.
01
Native iOS product
Swift, SwiftUI, Watch, widgets, Live Activities, HealthKit and release.
02
Salesforce that works
Processes, Flows, integrations and data connected to real operations.
03
UX & product design
Information architecture, prototyping, interaction design and accessibility.
04
Backend and automation
Supabase, Firebase, APIs, authentication, events and scheduled jobs.
Working system
From an unclear need to a product you can measure.
01
Understand
Users, business, constraints and success signal.
02
Decide
What to build now, automate and deliberately leave out.
03
Prototype
Real flows before committing architecture and time.
04
Build
Product, data, integrations, quality and observability.
05
Launch and learn
Release, support, metrics and evidence-led iteration.
Product judgement
Less presentation theatre. More trust signals.
Speed is designed
Performance, progressive loading and immediate feedback are part of UX.
Explainable privacy
Permissions, data and automation are communicated without ambiguity.
Evolution, not handoff
Architecture accounts for support, metrics, learning and future versions.
SwiftSwiftUISalesforceSupabaseCloudKitStoreKitHealthKitApp Store Connect
Lester Romero Bernardo
iOS Developer & Salesforce Consultant
Certifications
9x Salesforce
Location
Valencia, España
Technical direction
One accountable owner from strategy to delivery.
I’m Lester Romero Bernardo, a software engineer and consultant based in Valencia. I combine Salesforce, data architecture and Apple development to reduce handoffs, ambiguity and product debt.
Direct accountability
Technical and commercial judgement
No-handoff communication
Documentation and continuity
Next step
Tell me what needs to change in your product or operation.
You will get a direct response with concrete questions, early risks and the best next step. No generic sales deck.
Prefer direct email?
romerodev.app@gmail.comQuestions before we start
Do you only take complete builds?+
No. I can own an end-to-end product or step into a critical phase: UX audit, architecture, Salesforce automation, stabilisation or release readiness.
How do you estimate scope, time and cost?+
I first separate goals, risks and unknowns, then define a measurable first delivery with clear acceptance criteria.
Can you continue an existing product?+
Yes. I start with a technical and UX audit to preserve what works, locate debt and sequence improvements without an unnecessary rewrite.
Do you cover backend, analytics and release?+
Yes. Work can include data models, authentication, automation, APIs, privacy, analytics, App Store Connect, initial ASO and post-launch support.