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Digitalgrub Journal

Product launches, build notes, and lessons from shipping.

A practical record of what we make, why it matters, and what we learn once the work meets real users.

Latest story

One alert a day, about jobs that fit.

TN Jobs now tells you about the jobs near you: a job page on a phone
Build notes4 min read

TN Jobs now tells you about the jobs near you

One alert a day about jobs in your district and line of work, places grouped the way people think so Chennai includes Tambaram, only jobs you can still apply for, and a page for every job, written for Google's job search.

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More stories
DG Sudoku — Sudoku, comfortably. At your own pace.
Launch storyApp of the Week

We built a Sudoku for people over fifty

Larger squares behind a button that says so, hints that explain instead of answering, no timer, no lives, no ads, no account — and no internet at all. DG Sudoku is calm, clear Sudoku for anyone over fifty, free on Google Play.

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What it costs to run AI, and where the money leaks
Guide

What it costs to run AI, and where the money leaks

An AI feature bills by the word, and most of the bill is repetition rather than work — the same instructions sent again with every message, finished steps carried forever, a whole toolbox read before each answer, and rush pricing for work that could have waited. Where the money goes, the one check worth running this week, and the number to judge an AI feature by.

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We built our own chat app in seven weeks — the Digitalgrub Chat build log
Build notes

We built our own chat app in seven weeks

We run a small sales and leads business. Every client conversation, every file, every voice note lived in Telegram groups. When Telegram stopped being something we could promise would work tomorrow, we didn't move to another app — we built one. Here is the whole thing, including the bugs that cost us the most.

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A phone call answered by an AI voice agent that understands Indian languages
Guide

Teaching AI to talk the way India actually talks

Call a clinic anywhere in India and a sentence often starts in one language and ends in English. That used to break every automated phone system. Here is what a voice agent actually does, why Indian languages were the hard part, what changed, and where Digitalgrub is in this research.

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The Tamil Nadu salary guide on tnjobs.site, showing typical monthly pay by role
Case study

We built a job portal that updates itself every day

tnjobs.site puts 4,371 Tamil Nadu jobs in one place — sorted by town, by trade, and by what they actually pay — and rebuilds all 53 of its pages twice a day without anyone pressing publish. It costs less than a rupee a day to run.

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Digitalgrub PDF Tools home page with ten tools in a grid
Build notes

We built a PDF suite that never uploads your file

Every free PDF site asks you to upload a contract or a bank statement to a server you have never heard of. pdftools.digitalgrub.in does the same ten jobs — merge, split, compress, OCR, even a resume builder — with PDFium compiled to WebAssembly, running inside your own browser tab. Nothing is uploaded.

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DG Reel Break gameplay: a neon brick wall above a glowing paddle on a wireframe floor
Launch storyApp of the Week

I grew up on Arkanoid. The new ones never felt the same, so we made one.

Handhelds, then a console, then the family computer — some version of Arkanoid was always within reach. The modern ones never felt the same, so Digitalgrub made one: a free neon brick-breaker where every level is a scene shot in a different movie genre, with its own backdrop, tagline and original score.

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ServerDesk with a production server in the sidebar and the welcome screen
Launch storyApp of the Week

I built my own SSH client. You can download it today.

One night I typed a command meant for a test server into a window connected to a real one. Nothing broke — that time. ServerDesk is what came out of it: a native Mac SSH client with profiles, host verification, an audit trail, and a guardrail before dangerous commands run. Free, notarized, 2.3 MB.

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DG Invoice Maker dashboard with business totals
Launch storyApp of the Week

DG Invoice Maker is now on Google Play

One workspace for a small business: create invoices, send them as PDFs, track payments, purchases, and expenses, and see paid, unpaid, and overdue at a glance. Live on Google Play and the App Store.

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Ager Mushroom Farm app home screen with synced daily records
Client storyApp of the Week

My friends run a mushroom farm. They asked me for an app.

My friends wanted one place to see daily production, workers, and good vs bad bags — on Android. Here is what I built for their farm, and the one decision that mattered: it works without internet.

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Scrap Tyre Business Manager dashboard with business totals
Guide

What it actually takes to ship an iOS app in 2026

What does an app cost? It depends — so here are real dates from my own apps. The fastest took 8 days, the slowest 8 months. The difference was never magic. It was scope.

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ServerDesk app icon, a gold terminal prompt on a dark background
Build notes

Notarizing a Mac app: one error message, four separate bugs

One codesign error hid four unrelated problems: a throttled timestamp server, a crash in an unrelated log formatter, a debug flag that broke the output it was meant to explain, and a disk image I had notarized but never signed.

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Digitalgrub Studio mobile app home showing occasion ideas waiting for a photo
Build notes

A big week for Digitalgrub Studio: batch packs, free AI captions, and video

Fifty commits in three days. Batch packs of ten photos, caption suggestions from a model on our own server, Tamil and English in one line, and photos that become a small video.

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DG Stress Buster bubbles floating in a living room on Apple Vision Pro
Build notes

How I brought DG Stress Buster to Apple Vision Pro

I started with a floating window, learned that was the wrong idea, and rebuilt the bubbles in RealityKit so they drift around your actual room. Notes from learning visionOS on a small app.

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Co-Sleep iOS app home screen
Launch story

Scrap Tyre, Co-Sleep, and ExamBridge are now on the App Store

One app helps a scrap tyre yard understand purchases, stock, expenses, and profit. One helps people feel present across distance. One explains any topic in English and Tamil. Here is the thinking behind all three launches.

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