Microtransaction Challenge: Design the Next Revenue Generating Feature

Case Master AI by Languify invites product thinkers, aspiring product managers, designers, founders, working professionals, and students to rethink how microtransactions can be introduced into a large-scale communication platform.

The challenge is to design original features that users would voluntarily pay for through small, one-time transactions. Participants must explain the proposed feature, the user psychology behind the purchase, pricing, expected payment frequency, and potential revenue.

This is an independent product case competition organised by Case Master AI by Languify. Truecaller is referenced solely as the subject of a simulated product-management case.

Competition Structure

The competition consists of three rounds:

- Two-page product submission through the official Google Form - Case Master AI assessment - Offline presentation by the top 10 teams

Problem Statement

In this simulated case, assume that you are a Product Manager at Truecaller. The company plans to introduce premium microtransaction options across its current and potential future features.

Your primary KRA is to increase monetisation and revenue while maintaining a useful and trustworthy user experience.

Your Challenge

Propose microtransaction-based features that could be introduced within:

- Existing Truecaller features - New or potential future Truecaller features

Your solution must answer:

- What specific feature or benefit will the user purchase? - At what point in the user journey will the microtransaction be offered? - Why will the user be willing to pay at that moment? - How much will the user pay? - How frequently is the user expected to make the purchase? - How much revenue could the feature generate?

Participants are encouraged to think beyond subscriptions and advertisements. The proposed transaction should provide clear and immediate value to the user.

Timeline & Team Details

- Registration opens: August 18, 2026 - Round 1 submission deadline: September 1, 2026 - Round 2 Case Master AI assessment: September 3, 2026 | the access link and completion window will be communicated to eligible teams - Round 3 offline finale: September 5, 2026 - Team composition: Participants may compete individually or in teams of two - Finalists: The top 10 teams will be selected based on their combined performance in Rounds 1 and 2

Round 1: Registration And Two-Page Submission

Participants must register for the competition on Unstop and submit their solution through the official Google Form.

Submission Process:

- Register for the competition on Unstop. - Prepare the two-page submission according to the prescribed format. - Upload the final PDF through the official Google Form. - Submit the form before the deadline.

Only submissions received through the official Google Form before the deadline will be evaluated.

Submission Format:

- Maximum length: Two A4 pages - File format: PDF only - A separate cover page is not permitted. - Appendices and supplementary documents are not permitted. - The full names of all team members must appear in the footer of every page. - Participants may use original wireframes, diagrams, tables, and calculations. - External statistics and research must be properly cited. - Entries submitted after the deadline will not be considered.

The Submission Should Cover:

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Proposed Feature

Explain the feature and the user problem it solves, including:

- Target user - Existing problem or unmet need - Proposed solution - User journey - Point at which the microtransaction is introduced -

Microtransaction Model

Clearly explain:

- What the user is purchasing - Proposed transaction price - Expected purchase frequency - Whether the purchase is repeatable - Why a microtransaction is more suitable than a subscription or free feature -

User Psychology And Purchase Behaviour

Explain:

- What triggers the purchase - Why the user perceives the feature as valuable - Why the user will be willing to pay - What may prevent the user from purchasing - How user trust will be maintained -

Revenue Potential

Include a simple revenue estimate based on:

- Expected number of users - Expected conversion rate - Average transaction value - Purchase frequency - Estimated monthly or annual revenue

All assumptions must be clearly mentioned.

Round 2: Case Master AI Assessment

Teams that submit a valid Round 1 entry will be invited to participate in an assessment conducted through Case Master AI by Languify.

The assessment will evaluate participants' ability to think like Product Managers and solve product and business problems in a structured manner.

Participants may be evaluated on:

- Problem identification - User understanding - Structured thinking -

Prioritisation

- Product decision-making - Monetisation logic - Business judgement - Clarity of communication - Ability to defend assumptions

The assessment instructions, access link, duration, and completion window will be shared with eligible teams.

Interaction with Case Master AI as part of the official assessment is permitted. Participants may not use external generative AI tools to generate or prepare their answers.

Performance in Rounds 1 and 2 will be considered while selecting the top 10 teams for the offline finale.

Round 3: Offline Presentation

The top 10 teams shortlisted after Rounds 1 and 2 will present their ideas before the jury on September 5, 2026.

Finale Details:

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Format: Offline

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Date: September 5, 2026

- Number of finalist teams: 10 - Maximum presentation length: Six slides - Venue and reporting time: To be communicated to shortlisted teams

Mandatory Slide Structure:

Slide 1: Team Introduction

- Team name - Names of team members - Title of the proposed solution - One-line description of the idea

Slides 2 And 3: Microtransactions Within Current Features

- Current Truecaller feature or user flow - Proposed microtransaction layer - Wireframe demonstrating where the transaction appears - What the user receives after completing the payment - Proposed price

Slides 4 And 5: Proposed New Features

- Feature concept - Target user - User problem - User flow or wireframe - Proposed microtransaction opportunity - Price or pricing logic

Slide 6: User Psychology, Purchase Behaviour And Revenue

- Why the user will pay - Emotional or functional purchase trigger - Expected transaction amount - Expected purchase frequency - Estimated conversion rate - Estimated monthly or annual revenue - Key assumptions used in the calculation

Additional slides, hidden slides, and appendices will not be evaluated.

Evaluation Criteria

- Uniqueness, novelty, and originality: 45% - Relevance to the product and user problem: 20% - User psychology and willingness-to-pay logic: 20% - Pricing and revenue-generation potential: 10% - Clarity of communication and presentation: 5%

The jury will favour ideas that:

- Are genuinely new and differentiated - Introduce fresh value rather than simply placing an existing free feature behind a paywall - Identify a believable reason for users to pay - Clearly define the transaction amount and expected purchase frequency - Demonstrate meaningful revenue potential - Fit naturally within Truecaller's current or potential future product experience - Can be clearly explained and defended by the team

Originality And Generative AI Policy

All submissions must be based entirely on the participants' original thinking and work.

The use of external generative AI tools to generate, rewrite, structure, analyse, design, or create any part of the Round 1 submission or Round 3 presentation is prohibited. AI-generated or externally AI-assisted content may result in disqualification.

The only permitted AI interaction is participation in the official Round 2 assessment through Case Master AI by Languify.

Shortlisted teams may be asked to:

- Explain how they developed the idea - Defend every major assumption - Explain their wireframes and revenue calculations - Share rough notes or research used during ideation - Answer detailed questions about any part of the submission - Demonstrate their understanding of the proposed user journey

Teams that are unable to explain or defend their work may be disqualified. Plagiarism, copied ideas, fabricated research, or misrepresentation of work will also result in disqualification.

Awards And Recognition

The top three teams will receive:

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Certificates of Merit

- Recognition through a LinkedIn shoutout

Important Rules

- Participants must register through Unstop. - Round 1 submissions must be uploaded through the official Google Form. - The two-page limit for Round 1 is mandatory. - Eligible teams must complete the Case Master AI assessment within the communicated window. - The six-slide limit for Round 3 is mandatory. - The submitted idea must be original. - External AI-generated or AI-assisted submissions may be disqualified. - Shortlisted teams must participate in the offline presentation round. - Only the top 10 teams will qualify for the offline finale. - The jury's decision will be final and binding. - Any violation of the competition guidelines may result in disqualification.