---
title: "TSI DEV Studio (@tsidevstudio) | Hashnode"
description: "Indie Android studio building privacy-focused and useful apps. Read the latest articles by TSI DEV Studio on Hashnode."
url: "https://hashnode.com/@tsidevstudio"
---

@tsidevstudio

# TSI DEV Studio

@tsidevstudio · Bucharest, Romania · Joined September 2026

Indie Android studio building privacy-focused and useful apps.

[Website](https://tsidevstudio.com/)

### [Local-First Android Development: Building Apps That Depend Less on the Cloud](https://tsidevstudio.hashnode.dev/local-first-android-development?utm_source=hashnode&utm_medium=feed)

Why on-device processing, intentional dependencies, and offline functionality deserve a stronger place in modern Android architecture. Modern Android development offers more infrastructure than ever b

9 min read · [tsidevstudio.hashnode.dev](https://tsidevstudio.hashnode.dev/local-first-android-development?utm_source=hashnode&utm_medium=feed)

[8h ago](https://hashnode.com/posts/local-first-android-development/6af6de5aff4dbe999e04c7ba)

### [Building Two Android Privacy Vaults: Encryption, Decoy PINs and App Disguise](https://tsidevstudio.hashnode.dev/xsilent-vs-micutvault-android-privacy-vaults?utm_source=hashnode&utm_medium=feed)

Why I separated two privacy models into Xsilent and MicutVault instead of building one feature-heavy Android application.

8 min read · [tsidevstudio.hashnode.dev](https://tsidevstudio.hashnode.dev/xsilent-vs-micutvault-android-privacy-vaults?utm_source=hashnode&utm_medium=feed)

[4d ago](https://hashnode.com/posts/xsilent-vs-micutvault-android-privacy-vaults/6af0c01b6fda0ca2eca5ea68)

### [Building MicutVault: From 9 Disguise Modes to a Public Google Play Release](https://tsidevstudio.hashnode.dev/building-micutvault-android-privacy-vault-9-disguise-modes?utm_source=hashnode&utm_medium=feed)

How I built MicutVault, an Android privacy vault with 9 disguise modes, local-first storage, encrypted backup and no ads or subscription.

6 min read · [tsidevstudio.hashnode.dev](https://tsidevstudio.hashnode.dev/building-micutvault-android-privacy-vault-9-disguise-modes?utm_source=hashnode&utm_medium=feed)

[Nov 4](https://hashnode.com/posts/building-micutvault-android-privacy-vault-9-disguise-modes/6aeb012b7f53e6c634ab2d98)

### [A Small Launch Milestone: Xsilent Reaches #1 Product of the Week](https://tsidevstudio.hashnode.dev/xsilent-number-one-product-of-the-week-best-digital-launch?utm_source=hashnode&utm_medium=feed)

Week 44, 2026 ended with Xsilent at the top of Best Digital Launch — another external signal for an independent Android privacy app.

4 min read · [tsidevstudio.hashnode.dev](https://tsidevstudio.hashnode.dev/xsilent-number-one-product-of-the-week-best-digital-launch?utm_source=hashnode&utm_medium=feed)

[Nov 3](https://hashnode.com/posts/xsilent-number-one-product-of-the-week-best-digital-launch/6ae9a40955279cf94b3cfd31)

### [Building Xsilent as a Local-First Android Vault — and Reaching #1 Launch of the Month](https://tsidevstudio.hashnode.dev/building-xsilent-local-first-android-vault-launch-of-the-month?utm_source=hashnode&utm_medium=feed)

How Xsilent was built as a local-first Android vault with Decoy PIN, Clean Share and encrypted backup — and became #1 Launch of the Month.

3 min read · [tsidevstudio.hashnode.dev](https://tsidevstudio.hashnode.dev/building-xsilent-local-first-android-vault-launch-of-the-month?utm_source=hashnode&utm_medium=feed)

[Nov 1](https://hashnode.com/posts/building-xsilent-local-first-android-vault-launch-of-the-month/6ae772d75efb5e6f72094427)