Independent Android studio
Apps that watch your back — not your data.
Watchdog Labs builds fast, offline, privacy-first Android tools — made by an embedded engineer who got tired of simple apps that phone home.
Why Watchdog Labs
Small, sharp tools that respect you.
Offline by default
Your data never leaves your device. No servers, no sync, nothing to leak or breach.
Zero tracking
No ads, no analytics, no third-party SDKs. We literally can't see what you do — by design.
Engineered, not assembled
Built by a firmware engineer. Lean, native apps that do one thing — and do it well.
First release
Card Rewards Checker
Coming soon to Google Play
Know which card to swipe — before you swipe.
Type a merchant or spend category and instantly see which of your cards earns the most. It knows the MCC behind the merchant, each card's reward rate, and — crucially — when a card won't earn at all.
- 1,000+ MCC categories mapped to real reward rates
- Multi-card comparison, ranked best-to-worst at a glance
- Exclusion-aware — flags spends that silently earn nothing
- 100% offline — no login, no permissions, nothing collected
HSBC TravelOne
Axis Atlas
Amex MRCC
Amex Gold Charge
+ more soon
Result · "Grocery — supermarket"
HSBC TravelOneGrocery · MCC 5411
2× pts
Amex MRCCEarns normally
1×
Axis AtlasExcluded — grocery
0×
Illustrative. The app ships with the live rule set bundled offline.