Destrava
ENEM focus, enforced
Turn distraction into admission.
Destrava takes on the biggest obstacle facing students preparing for Brazil's national college entrance exam: their own phone. Rather than simply blocking distractions, it converts that time into study. Scopo shaped the product, built the entire system, and shipped it to both app stores.
Role
In-house product — strategy, product and engineering
Year
2026
Platforms
iOS · Android
Months from idea to both app stores
Systems in production — app to cloud
Platforms with native enforcement
Years of official exam papers in the library
A market of millions — and a problem nobody had solved.
Every year, millions of Brazilian students prepare for the ENEM exam. Almost all of them study with a phone beside them, and almost all of them lose to it. Parents know it, schools know it, and the only answer on offer so far was to confiscate.
Generic blockers don't work because they give nothing back: they're easy to bypass, they start arguments at home, and they get uninstalled inside a week. None of them gives the student a reason to keep them.
The opportunity was to invert the logic. If the block produced studying, it would stop being a punishment and become a habit the student — and whoever pays the subscription — actually wants to keep.
The block stops being a punishment and becomes study time.
The student picks the apps that distract them most and sets a time limit. When the time runs out, all of them lock together. To unlock, they answer exam-style questions. The cycle repeats as many times as needed through the day.
Every round returns a score calculated with the same statistical methodology as the official exam. The student isn't collecting points: they see where they stand, subject by subject, on the scale that matters.
The result is a product with three audiences and a single argument — the student gains focus, the parent gains peace, the school gains results. That's what sustains a recurring subscription instead of a forgotten download.
“The phone locks. Knowledge unlocks it.”
Blocking that holds
Every selected app locks together against one shared time budget. No shortcut around it.
Study instead of scrolling
Access returns when the student answers exam-style questions — each one followed by a worked explanation.
A score that means something
Each session is scored by the same methodology as the official exam, not an invented yardstick.
Practice on demand
Beyond the blocking cycle, students pick a subject and topic to drill whenever they want.
Six screens, one loop.
Scopo, Build and Scale — on our own product.
The methodology we apply to client projects is the one we used here. No shortcuts.
Scopo
Discovery & Planning
Before writing code we defined what the product would and would not be: one core mechanic, one revenue model, one quality bar. Anything that didn't serve those three was cut from the first release.
- Defining the core mechanic
- Feasibility on both platforms
- Subscription model and audience
- Cutting the MVP
Build
Implementation
Five systems built and shipped in parallel: the app on both platforms, the service behind content and scoring, the internal operations panel, user sign-in, and the marketing site. First commit in May, approved on both stores in July.
- Native app for iOS and Android
- In-house content and scoring service
- Internal operations panel
- Cloud provisioned as code
Scale
Evolution
With the product live, evolution became led by usage and conversion data: subscriptions with a free trial, accounts so a student's history survives a new phone, and a roadmap set by what the numbers show.
- Subscriptions with a free trial
- Usage and conversion metrics
- Accounts and cross-device history
- Data-led roadmap
Built to last, not to demo.
Mature technology, chosen so the product can grow without a rewrite.
Mobile
Backend
Cloud
Hard to build. Hard to copy.
Platform barrier
Genuinely blocking apps depends on restricted permissions that Apple and Google grant case by case, under review. Destrava holds that approval on both stores. It's what separates real enforcement from a reminder the user swipes away — and it isn't something a competitor solves by writing code.
Assessment held to exam-board standards
The student's score comes from the same statistical methodology the official exam uses, applied across sixteen years of public exam papers. That takes subject-matter depth, not just development — and it's what earns credibility with schools and prep courses.
Privacy as a selling point
The most sensitive data in the product — how the student uses their phone — never leaves the device. That simplifies compliance and pre-empts the main objection from parents and institutions.
Want your product in the market?
Destrava came out of the same process we apply to every project: the right scope, complete execution, a product that ships. Tell us your challenge — we start with the scope.