CallGuard
Free, ad-free call blocking for Android
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CallGuard helps Android users manage unwanted calls with configurable blocking rules. Block telemarketing, hidden and other unwanted callers, with offline call blocking and no ads. Available for Android 10 and newer. See the website for current download options.
PH · launched Oct 31, 2026 · 1 upvote (top 67%) · 0 views
Niche: mobile system utility apps · 186 launches, 17 in the last 7 days ▲ +6% · Explore this niche →
Category and tags
- Security
- Workflow automation
- B2C
- Not AI
- Commercial product
- Android
Visit website ↗ Source listing ↗
More like this: all 186 launches in mobile system utility apps →
Could you build this?
Partial The Android app shell and rule-based blocking can be vibe-coded using CallScreeningService. However, effective telemarketing blocking depends on an up-to-date database of spam numbers, which is proprietary data a solo builder would struggle to obtain.
What it would actually take: The app itself is a Kotlin project using Android's call screening role APIs with a local rules engine. The hard part is building or licensing a continuously updated spam-number dataset, plus crowd-reporting or ML classification to keep it current. That requires data partnerships or a community data pipeline.
Competitors
Other products that read as similar to this one : 324 launches clear the similarity bar, closest 8 shown.
Attention rank: #168 of 325 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 299 days after the earliest competitor.
- DenyCalls · ph · 2026-09-08 · 1 upvotes · similarity 0.57
- Globber · ph · 2026-10-14 · 3 upvotes · similarity 0.56
- SEN6TIF · ph · 2026-10-21 · 1 upvotes · similarity 0.54
- Call Manager · ph · 2026-10-02 · 1 upvotes · similarity 0.54
- CallFirst · ph · 2026-09-21 · 2 upvotes · similarity 0.51
- Call Screener · ph · 2026-10-12 · 2 upvotes · similarity 0.50
- DoNotNotify · hn · 2026-01-05 · 347 upvotes · similarity 0.49
- MotionGuard · ph · 2026-10-22 · 1 upvotes · similarity 0.46
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.