# Hapibits

> Hapibits builds focused, high-quality Android apps that respect your device and your time. No third-party display ads. No data sales. No bloat.

Hapibits is an independent Android app studio. Current apps: Echo Equalizer and Sanctum.

## Echo Equalizer

Echo Equalizer is a free, ad-free, system-wide 10-band equalizer and bass booster for Android. It works with Spotify, YouTube Music, and 50+ music players. Features include a multi-band equalizer (5/7/10/12 bands, up to 31 on Pro), bass booster, 3D virtualizer, volume booster, AutoEq headphone correction (pick any lab and headphone, powered by autoeq.app data), advanced limiter, compressor, channel balance, and per-device audio profiles. The free tier is completely ad-free. Pro features include Advanced Limiter, Advanced Compressor, up to 31-band EQ, Home Shortcuts, and Quick Tile. Echo Pro is available as a monthly subscription, a yearly subscription, or a one-time lifetime purchase. 500K+ downloads, 4.8 stars, and 13.3K reviews on Google Play.

- [Echo Equalizer Landing Page](https://hapibits.com/echo): Overview, features, reviews, and download link for Echo Equalizer.
- [Echo Equalizer Pricing](https://hapibits.com/pricing.md): Free tier (ad-free, full core features including AutoEq) and Pro (monthly, yearly, or one-time lifetime — adds Advanced Limiter, Advanced Compressor, up to 31-band EQ, Home Shortcuts, Quick Tile).
- [Echo Equalizer User Guide](https://hapibits.com/echo/user-guide): Step-by-step setup guide and full explanation of every feature — equalizer, bass booster, virtualizer, limiter, compressor, profiles, and more.
- [Echo Equalizer Supported Music Players](https://hapibits.com/echo/supported-apps): Full list of supported apps (Spotify, YouTube Music, Samsung Music, etc.), apps requiring extra configuration (BlackPlayer, Poweramp, VLC, etc.), and unsupported apps with Global Mix workaround instructions.
- [Echo Equalizer Troubleshooting Guide](https://hapibits.com/echo/troubleshoot): Solutions to 13 common issues — effects not working, random stops, distortion, Bluetooth issues, lip-sync delay, Samsung conflicts, and more.
- [Echo Equalizer Privacy Policy](https://hapibits.com/echo/privacy): Echo uses Firebase Analytics and Crashlytics for general usage and reliability diagnostics. The policy states that Echo does not collect directly identifying account information, sell data, or use it for advertising. The app remains ad-free.

## Echo Equalizer — Learn & Comparisons

Plain-English guides to audio concepts (for enthusiasts, not engineers) and honest comparisons against other Android equalizers.

- [Audio Limiter Explained](https://hapibits.com/echo/learn/audio-limiter-explained): What an audio limiter does and how every setting works — attack, release, ratio, threshold, and post gain — with diagrams, using Echo's Advanced Limiter. Includes recommended starting settings and an FAQ.
- [Equalizer Bands Explained](https://hapibits.com/echo/learn/equalizer-bands-explained): A beginner-friendly map of bass, mids, presence, and treble; a 10-band frequency reference; an interactive starting-curve explorer; and a five-step method for tuning headphones without guessing.
- [Best 10-Band Equalizer Presets](https://hapibits.com/echo/learn/best-10-band-equalizer-presets): Twenty source-backed preset curves for bass, vocals, podcasts, rock, EDM, hip-hop, classical, and more, with an interactive explorer and exact CSV/JSON downloads. Values are verified against a named committed source snapshot, not claimed as live Play-build proof.
- [Echo 10-Band Preset Dataset](https://hapibits.com/echo/presets/10-band-presets.json): Machine-readable frequencies, dB values, descriptions, source commit, file hashes, and verification boundary for all 20 presets.
- [Best Android Equalizer Apps (2026)](https://hapibits.com/echo/best-android-equalizer): Ranked roundup of the top system-wide Android equalizers — Echo (best overall, ad-free), Wavelet (best AutoEq database), Poweramp Equalizer (best for power users, up to 32-band, paid), Flat Equalizer (best minimal UI with reverb), and Equalizer FX (barebones). Each with pros, cons, and who it's for.
- [Best Apps for Music Listeners on Android (2026)](https://hapibits.com/echo/best-apps-for-music-listeners): The best streaming apps (Spotify, YouTube Music, Tidal) and local players (Poweramp, Musicolet), plus why a system-wide equalizer like Echo upgrades the sound of all of them at once.
- [Best Headphones for EQ & Android (2026)](https://hapibits.com/echo/best-headphones-for-eq-android): A research-based guide to the Sony WH-1000XM6, Sennheiser MOMENTUM 4 Wireless, Sennheiser HD 490 PRO, and beyerdynamic DT 770 PRO X, with official specifications, actual manufacturer images, codec and connection guidance, exact-model AutoEq availability, and honest limitations.
- [Echo vs Wavelet](https://hapibits.com/echo/vs/wavelet): An honest side-by-side comparison of Echo Equalizer and Wavelet — AutoEq headphone correction, EQ bands, ads, dynamics processing, and price. Both offer AutoEq headphone correction using autoeq.app data (pick any lab and headphone); Wavelet also imports custom profiles from squig.link. Echo is fully ad-free with flexible band counts (5/7/10/12, up to 31) and a full dynamics chain (limiter + compressor + volume booster). Echo Pro is available monthly, yearly, or as a one-time lifetime purchase.
- [Echo vs Flat Equalizer](https://hapibits.com/echo/vs/flat-eq): An honest comparison of Echo Equalizer and Flat Equalizer. Flat is a minimal, flat-design 10-band EQ with bass boost, volume boost, virtualizer and a reverb effect (ad-supported free tier); Echo adds AutoEq headphone correction, up to 31 bands, a full limiter + compressor, and a completely ad-free free tier.

## Sanctum

Sanctum is a free, privacy-first app blocker built for Christians and believers. When you open a distracting app, Sanctum intercepts it with a Sacred Pause — displaying a grounding Bible verse and a personalized prayer. Features include app blocking, Sacred Pause, The Altar (daily scripture journaling), streak tracking, journey analytics, and AI-powered prayers. No data collected. No tracking. Runs entirely on-device.

- [Sanctum Landing Page](https://hapibits.com/sanctum): Overview of Sanctum — how it works, features, and download link.
- [Sanctum Privacy Policy](https://hapibits.com/sanctum/privacy): Sanctum collects no personal data. Privacy-first by design.

## About Hapibits

- [Hapibits Homepage](https://hapibits.com): Studio homepage listing all apps.
- [About Hapibits](https://hapibits.com/about): What the independent Android app studio builds and how it makes product decisions.
- [Contact Hapibits](https://hapibits.com/contact): Email, product-support guidance, privacy enquiries, and the Telegram community.
- [Website Privacy](https://hapibits.com/privacy): Privacy information for hapibits.com, separate from the two app policies.
- [OpenAPI](https://hapibits.com/openapi.json): OpenAPI 3.1 description of the read-only site discovery API.
- [Site Directory API](https://hapibits.com/api/site): Structured JSON directory of apps and authoritative resources.
- [Sitemap](https://hapibits.com/sitemap.xml): Complete XML index of public website pages.
- Community: https://t.me/hapibits (Telegram)
- Email: hapibits@gmail.com
- Google Play: https://play.google.com/store/apps/dev?id=hapibits