
Telly App
Practice speaking a new language by being prompted to tell stories on the spot
Telly encourages the construction of stories in English, building greater confidence in oral conversation skills.
- UX/UI design
- app design
- UX research
- MVP testing
- user testing
- 2023
Made in Apple Developer Academy at PUC-PR
Team: Felipe Passos (development), Caio Zanolla (product design), Gemeli (visual identity and illustrations), Heloísa Pereira (development), Júlia Savaris (UX/UI design)
Telly is a free app that helps people practice English conversation through improvisation. Users build stories from random words related to a theme chosen before the round begins. This turns English practice into something more playful, bringing more confidence when it’s time to put words together and speak out loud.
Design Process
Challenge Based Learning
Big Idea: Language
Essential Question: How can we help people who feel insecure with a new language express themselves verbally?
Refined Challenge: Support the development of oral conversation skills in a foreign language.
Solution Statement: A game that encourages the construction of stories in English, building greater confidence in oral conversation skills.
Storytelling Concept Test
Before building any part of the app, we validated the core storytelling mechanic through a low-cost MVP test: participants were simply shown sets of words and asked to tell a story on the spot. No app, no interface, just the raw prompts. Each person was tested individually, but the word sets were split into four different formats so we could compare how each shaped the storytelling experience.
Group: nouns, verbs, and characters
Combining nouns, verbs, and characters gave participants the richest material to work with. Characters in particular seemed to entertain users more, adding a playful, personal quality to the stories. The main challenge was pacing: stories tended to repeat themselves and were difficult to wrap up.
Group with the addition of emojis
Adding emojis alongside the words made narration noticeably easier. Participants identified which terms to use more quickly, though a few words were occasionally forgotten or left unspoken during the story.
Only nouns
Limiting prompts to nouns alone resulted in shorter, less creative stories. Without verbs or characters to build around, and with no connecting theme between the nouns, participants had less to work with and struggled to develop a fuller narrative.
Group with emojis and drawing while creating
This group tested a specific hypothesis: that sketching while telling a story could make the exercise easier or more engaging. In practice, we found the opposite. Participants had difficulty narrating and drawing at the same time, though the stories that did emerge were told more simply.
What we learned
Nouns, verbs, and characters, paired with emojis, offered the strongest balance between ease of use and creative engagement. Because this test relied only on printed word sets rather than a working prototype, we were able to validate the core mechanic quickly and cheaply, and these findings directly shaped the word categories and prompt structure built into Telly’s final version.
UX insight: A recurring pattern emerged across every group — participants often lost track of which words they had already used, revealing that giving users feedback on already-used words would be a valuable feature for the final app.
App User Experience
We approached User Experience through a user journey map, a persona, and a value proposition canvas. We also mapped out the app’s user flow, which was fundamental in aligning the team around a shared vision and in creating a concise, coherent experience for the user.
User Journey

User Flow

Persona

Crazy 8s

User Interface
We prioritized feedback on user interactions, both visual and tactile. The images below demonstrate all the interactions within Telly.

Results
The results of this project go beyond publishing on the App Store, they also validate the goals we set out to achieve.
The Telly app was tested asynchronously with over 10 people within the Academy, as well as 6 others from outside the institution. This round of testing focused especially on validating the format and structure being developed, allowing us to build something closer to what our intended users actually needed.
Telly was launched on the App Store in 3 different languages and ranked No. 65 in the Education category (2023).









