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iOS Privacy Suite · Case Study

Observer

I designed Observer from scratch — five everyday privacy guards in one calm app — then used the data to make protection something people actually understand.

Lead Product DesigneriOS · 20244-month build
Link check
Protection home
AI security assistant
My role
Lead Product Designer — research, UX, UI & design system
Team
1 PM · 3 engineers
Timeline
4 months · shipped 2024
Platform
iOS · privacy suite · freemium
4.2
Guards enabled / user
out of 5
44%
Used the AI assistant
weekly active
+27%
Premium conversion
vs single-tool baseline
4.6
App Store rating
at launch

The challenge

Everyday privacy is fragmented across a dozen scary apps

Ads track you, links phish you, public Wi-Fi leaks you, and your email shows up in breach after breach. The “solutions” are a graveyard of single-purpose tools — each technical, each alarmist, none of them talking to each other. Regular people don’t want five security apps; they want to feel watched-over by one they trust.

My brief: fold ad-blocking, link safety, Wi-Fi checks, leak monitoring and an AI assistant into a single calm suite — powerful underneath, effortless on top.

The suite

Five guards, one app

Ad & Tracker Block

Strip ads and trackers across browsing.

Link Safety

Score any URL before you tap it.

Wi-Fi Check

Know if the network you’re on is safe.

Leak Monitor

Watch your email for new breaches.

AI Security Assistant

Ask anything; get plain-English answers.

One-tap Scan

A single check across every guard.

Discovery

Why people stay unprotected

I don’t know what I even need

Fragmented tools meant choice paralysis. People couldn’t tell which of five apps actually protected them.

Is this link safe to open?

The most common real-world worry — and no everyday tool answered it in a way a normal person could read.

Security apps scare me

Red alarms and jargon created anxiety, not confidence. People wanted calm reassurance, not a threat report.

From 9 interviews, support-ticket analysis across the single-tool predecessors, and a teardown of 7 privacy / adblock apps.

Key decisions

Designed from scratch, then tuned on the data

I shipped it, watched where people got lost or scared, and redesigned those moments. Every call is mine — and each one moved a number.

Security software sells alarm. Observer sells the quiet feeling of being watched over.

Impact

What shipped — and what it moved

4.2/5
Guards enabled / user
protections actually on
44%
Used the AI assistant
weekly active
+27%
Premium conversion
vs single-tool baseline
4.6
App Store rating
at launch

Measured over the first 8 weeks via Amplitude and App Store Connect. Bundling the guards under one calm home — plus the AI assistant — was the biggest driver of both protection coverage and Premium conversion.

Reflection

What I’d do differently

🧩

Five guards risked feeling like five settings

Bundling helped, but I’d design a single “protection score” that rolls them into one number people can watch improve.

🤖

The AI needed clearer limits

Users trusted it a little too much. I’d add visible boundaries on what it can and can’t verify.

🎨

The warm palette fought legibility

Coral-on-coral looked beautiful but hurt contrast on dense screens. I’d push more neutral surface tones for data.

Design system

Warm, watchful, calm

Palette

Coral
#D4514E
Deep Coral
#8B2E2C
Sand
#E8A87C
Cream
#FFF5EC
Ink
#3A201C

Typography — Plus Jakarta Sans

Display · 800
Observer
Heading · 700
Block Phishing Sites
Body · 500
Paste a link to check if it’s safe before you open it.
Label · 700
Risk is high · 55 / 90

Key components

AdBlock Ads

Guard Toggle

Every protection as one clear switch.

55/90

Risk Score

A single readable number, not a report.

New Check

Action Chip

Warm, friendly calls-to-action.