GranularBlock: Feature-Level Social Media Blocker for iOS & Android
Traditional screen time blockers use an all-or-nothing approach that forces users to block entire apps, cutting off necessary communication features (DMs) and driving them to switch to alternative doomscrolling platforms.
Is the problem real?
Existing screen time blockers take an all-or-nothing approach that forces users to block entire social media apps, which prevents them from accessing useful features like DMs, stories, or feeds, while failing to curb doomscrolling across alternative platforms.
EVIDENCE
I got tired of screen time blockers, so I removed reels from Instagram (while keeping everything else)
I got tired of screen time blockers, so I removed reels from Instagram (while keeping everything else)
Who feels this pain?
TARGET USERS
Smartphone users struggling with short-form video addiction who need to stay connected via DMs and stories but want to completely excise Reels and Shorts.
Context
Current Workarounds
Where's the gap?
EXISTING SOLUTION GAPS
OPPORTUNITY & VALUE
Multiple instances of users stating that whole-app blocks cause them to delete the tools or switch directly to another platform like Reddit to continue doomscrolling.
Granular, feature-level blocking instead of whole-app restrictions, paired with multi-app habit tracking to prevent platform-swapping.
A mobile utility/extension framework that selectively intercepts and blocks specific application features (Reels, Shorts, Explore tabs) across multiple social apps while leaving DMs, stories, and standard feeds fully operational.
How does it make money?
MONETIZATION
Model
Users currently install sketchy modded apps or delete their profiles to solve this; premium utility tools like Opal successfully charge for focus, proving high willingness to pay for digital well-being.
How do you ship it?
MVP PLAN
“Kill Reels and Shorts while keeping your DMs.”
A mobile utility/extension framework that selectively intercepts and blocks specific application features (Reels, Shorts, Explore tabs) across multiple social apps while leaving DMs, stories, and standard feeds fully operational.
Core Features
Weekly Roadmap
- •Build basic Safari extension injection script to hide Reels/Shorts containers
- •Implement user dashboard toggle for specific features
- •Set up local data architecture to track block triggers
- •Develop a background monitor for switching between restricted domains
- •Create a prompt overlay alerting the user that they are substituting habits
- •Build the Android Accessibility service proof-of-concept for native app view filtering
- •Integrate Apple In-App Purchases and Google Play Billing
- •Onboard 20 users from r/nosurf into a private TestFlight/Beta loop
- •Fix injection lag to prevent Reels from flashing briefly before hiding
- •Publish to iOS App Store and Google Play Store
- •Submit launch post to r/nosurf and Product Hunt with video demonstrations
- •Track conversion metrics from free trial to paid tier
Launch on subreddits focused on digital detox and productivity (r/nosurf, r/getdisciplined, r/digitaltox) and launch on Product Hunt.
RISKS & ASSUMPTIONS
Top Risks
Apple and Google tightly restrict how apps can modify or overlay third-party apps, potentially limiting execution to Safari extensions or Android Accessibility features.
Social media platforms frequently update their application DOM or view structures, which can temporarily break feature-level blocking scripts.
Users might circumvent the tool by installing new unmonitored apps, requiring broad library support quickly.
Should you build it?
Run an Investment Memo to get a structured Go / No-Go verdict, competitor landscape, unit economics, and a 90-day validation roadmap for this opportunity.
Generate an investment memoWhat this score means
This opportunity scores well above the median for ideas surfaced by MonetScope, with a validation sub-score of 9/10 against 2 independently sourced evidence signals. A "strong" rating in this band typically means the pain signal is consistent and recurring across multiple discussions, but one of the three pillars (severity, willingness to pay, or competitor weakness) is somewhat softer than top-tier opportunities. Founders evaluating this should focus customer discovery on the softest pillar first — confirming the gap before committing engineering time to a build.
Why this matters for SaaS founders
It sits at the intersection of "android", "browser-extension", "digital-detox", which makes it relevant to a specific subset of founders rather than a generic horizontal opportunity. SaaS opportunities at this stage tend to win on the strength of their initial wedge — a single workflow that the target user runs every week, where the existing solution is either spreadsheets, a clunky incumbent feature, or a manual process they hate. The build cost is moderate; the distribution cost is everything. The MonetScope pipeline surfaces this category alongside other saas signals, which is why it appears here rather than in a generic "trending ideas" feed.
Scores are derived from real forum discussions across Reddit, Hacker News and X, weighted by evidence volume and signal quality. How scoring works
Frequently asked questions
Is "GranularBlock: Feature-Level Social Media Blocker for iOS & Android" a real validated startup idea or just an AI-generated suggestion?
MonetScope does not generate ideas from a language model's imagination. Every opportunity on this site is anchored to specific source posts and comments from real public discussions — typically on Reddit, Hacker News, or X — where actual users describe the pain in their own words. The AI's role is structuring, scoring, and grouping those signals into a navigable opportunity, not inventing the problem.
How recent is the underlying data for android?
MonetScope's spider pipeline runs continuously and surfaces opportunities as new evidence accumulates. The "Updated" date in the header reflects the most recent re-scoring of this specific opportunity. Most saas opportunities visible in the public catalog draw from discussions in the last 30-60 days; older signals are de-prioritized because user pain shifts faster than most founders assume.
What's the difference between "overall score" and "validation score"?
Overall score is a composite across six dimensions — pain, urgency, willingness to pay, market size, defensibility, and execution ease — designed to give a single number for triage. Validation score is narrower: it asks "how cleanly does the same signal repeat across independent sources?" An opportunity can score high on overall but lower on validation when one or two large discussions dominate the evidence; conversely, validation can be high on a smaller-overall idea where the signal is consistent but the addressable market is modest.