Ttokttoki Lina

Build the habit of pausing before a suspicious screen

Practice spotting manipulative interfaces through purchase-free simulations, a 19-pattern field guide, adaptive review and senior-friendly accessibility.

App Store Google Play

Free download code for students

Dark patterns

2–3m

Quick mission

Learning lenses

Screen story

10 SCENES · v1.0.3

Read what the app does, screen by screen.

Real App Store scenes are sequenced around the feature and its context. Each image is captioned with the role of the screen in view.

Dark-pattern classroom

Do more than memorize names. Learn how suspicious screens behave.

Nineteen dark patterns are organized through four lenses: sneaking, misdirection, obstruction and pressure. Each comes with plain-language cues and defensive actions.

02The classroom organizing nineteen patterns through four lenses

03Field lessons covering cancellation barriers and hidden information

04A plain-language explanation of emotionally manipulative wording

Safe simulations

Pause, inspect and decide without making a real purchase.

Work through simulated shopping and subscription interfaces with a clear mission. Hints point back to evidence and next actions.

05A simulated shopping mission checking the basis of a discount

06An observation hint that points to missed evidence and remaining actions

07Feedback explaining the choice and overlooked pattern in plain language

Progress and review

Turn every missed cue into evidence for the next decision.

After each mission, the app surfaces the habits practiced, not just a score. Seven-day and lifetime views reveal first-choice accuracy, streaks and patterns worth revisiting.

08A completion view summarizing score, badges and new defensive habits

09Progress tracking for first-choice accuracy, streaks and safety level

Accessibility

Adapt the classroom to the eyes and hands using it.

Adjust text size and Korean speech speed, enable higher contrast or reduced motion, and choose whether Lina reads goals or offers spoken encouragement.

10Accessibility controls for text, speech and screen motion

Made for

People with a particular need.

Older adults who find payment and subscription screens unfamiliar

Families practicing safer smartphone habits together

Community educators teaching practical digital literacy

Privacy & note

No account or real purchase history is required; learning data stays on-device. The app teaches consumer awareness and does not provide case-specific legal or financial advice.

FAQ

Asked before downloading.

Version: 1.0.3
Size: 35 MB
Age rating: 4+
Minimum iOS: 16.6

Can a practice mission make a real purchase or account?

No. Every mission runs in a simulation separated from real services, so it cannot purchase, subscribe or create an account.

Which dark patterns can I learn about?

Nineteen patterns, including hidden renewal and costs, preselection, false discounts, disguised ads, cancellation barriers and time pressure, are organized through four learning lenses.

Is it designed for older adults?

Yes. It supports large text, generous touch targets, high contrast, reduced motion and Korean text-to-speech.

Get the app