# Mobitoss

> Mobitoss Technologies LLP is a product and software studio in Pune, India. It builds web, mobile and AI products for founders and businesses, and makes its own products: SquareBooks (accounting, GST and compliance software connecting CA firms with their business clients) and Mobitoss Games (free one-touch browser games).

Contact: dev@mobitoss.com · Pune, Maharashtra, India. Guides are written by the Mobitoss team; tax and compliance guides are general information, not professional advice.

## Company and products

- [Home](https://www.mobitoss.com/): overview of Mobitoss, selected work and capabilities
- [SquareBooks](https://www.mobitoss.com/squarebooks.html): web app for CA firms (compliance calendar and board, notices, document requests, reports) and mobile app for businesses (billing with UPI, cash and pay later, bills, stock, dues, GST & CA). Product site: https://www.squarebooks.in/
- [Services](https://www.mobitoss.com/services.html): product discovery and design, web and cloud engineering, mobile apps, practical AI, quality and support, games
- [Games](https://www.mobitoss.com/games.html): DreamLine, ShadeZing, Hero Jump, Bunny Jump and more, playable at https://games.mobitoss.com/
- [About](https://www.mobitoss.com/about.html) and [Contact](https://www.mobitoss.com/contact.html)

## Guides: GST & compliance

- [Bookkeeping for small shops: a 15-minute daily routine that makes GST and your CA easier](https://www.mobitoss.com/guides/bookkeeping-routine-for-small-shops.html): Spend about 15 minutes at closing: split the day's sales into cash, UPI or card, and credit; count the cash drawer; photograph today's purchase bills; and note expenses. Each week, review dues and send bills to your accountant. Each month, match the bank statement and pay GST on time.
- [How a CA firm can run monthly compliance for 50+ clients without chasing](https://www.mobitoss.com/guides/ca-firm-monthly-compliance-workflow.html): CA firms that handle many clients reliably work from one calendar derived from each client's GST, TDS and ROC details, give every filing a named owner, request documents once a month with a date, keep partner review as a separate stage, and track every notice through to its reply date.
- [GST return due dates explained: GSTR-1, GSTR-3B and the QRMP scheme](https://www.mobitoss.com/guides/gst-return-due-dates.html): Monthly filers submit GSTR-1 by the 11th and GSTR-3B by the 20th of the following month. QRMP filers (turnover up to ₹5 crore) file GSTR-1 by the 13th and GSTR-3B by the 22nd or 24th after each quarter, and pay tax monthly through PMT-06 by the 25th.
- [Received a GST scrutiny notice (ASMT-10)? What it means and how to reply](https://www.mobitoss.com/guides/gst-scrutiny-notice-asmt-10.html): ASMT-10 is a scrutiny notice under section 61 of the CGST Act asking you to explain discrepancies in your GST returns. Reply in Form ASMT-11, usually within 30 days: reconcile the figures, pay anything genuinely due through DRC-03, and answer each point with evidence. If the reply is accepted, the case closes with ASMT-12.
- [Income tax intimation under section 143(1): how to read it and respond](https://www.mobitoss.com/guides/income-tax-143-1-intimation.html): An intimation under section 143(1) shows the result of processing your income tax return: a match, a refund or a demand. A 143(1)(a) proposed adjustment comes earlier and asks you to respond, usually within 30 days, through e-Proceedings on the e-filing portal. Most differences come from mismatches with Form 26AS, the AIS or Form 16.
- [Input tax credit made practical: purchase bills, GSTR-2B and the Invoice Management System](https://www.mobitoss.com/guides/input-tax-credit-gstr-2b-ims.html): You can claim input tax credit only for invoices your supplier has reported and that appear in your GSTR-2B. Since October 2024 the Invoice Management System lets you accept, reject or keep each invoice pending before GSTR-2B is generated on the 14th; invoices with no action are treated as accepted.

## Guides: Building products

- [What to prepare before hiring a software development team](https://www.mobitoss.com/guides/before-hiring-a-development-team.html): Before hiring a development team, prepare a one-page brief covering the user, the problem, the first-release journeys and a success measure. Rank your priorities, share a budget range with a 15–20% reserve, agree in writing that code, designs and accounts belong to you, and ask to see working software every week.
- [How to scope an MVP: deciding what your first release should (and shouldn't) do](https://www.mobitoss.com/guides/how-to-scope-an-mvp.html): Scope an MVP by choosing one specific user and one problem, mapping their journey end to end, and building only what that journey needs. Cut features that are not on the journey or can be done manually for now, but never cut security, correct calculations or reliable sign-in. Decide how you will measure success before you build.
- [Web app, mobile app or both? How to choose for your first product](https://www.mobitoss.com/guides/web-app-vs-mobile-app.html): Choose the platform from your user. Desk-based, information-heavy work suits a web app; frequent use on the move, or use of the camera, offline storage and notifications, suits a mobile app. Cross-platform frameworks such as Flutter and React Native make Android and iOS affordable from one codebase. If you need both, still choose one to build first.

## Guides: AI & automation

- [Automating bill and invoice entry with AI: how it works and how to keep it accurate](https://www.mobitoss.com/guides/ai-document-processing-invoices.html): AI document processing captures a bill, reads it and extracts fields such as GSTIN, invoice number, date, line items and tax. Accuracy comes from what follows: rule-based checks on GSTIN format, arithmetic, duplicates and dates, then a quick human review that shows the data beside the original image.
- [Practical AI for small businesses: where it helps, where it doesn't, and how to start](https://www.mobitoss.com/guides/practical-ai-for-small-businesses.html): AI reliably helps small businesses read documents, write first drafts, search their own knowledge and sort incoming work. Keep people in charge of figures, professional advice and anything sent to customers. Start with a four-week pilot on one frequent, easy-to-check task, and measure time saved and errors.

## Guides: Games

- [Designing one-touch browser games: lessons from building the Mobitoss arcade](https://www.mobitoss.com/guides/designing-one-touch-browser-games.html): Good one-touch games are built around one clear action, teach the rule through the first seconds of play, make failure feel fair, raise difficulty gradually, restart in one tap, confirm every action with feedback, and are designed for a thumb on a phone.
- [Building HTML5 games that run well on phones: a practical checklist](https://www.mobitoss.com/guides/html5-games-on-phones.html): To make an HTML5 game run well on phones, load only what the first screen needs, keep a steady frame rate with requestAnimationFrame and object pooling, respond on touch start, scale a fixed logical resolution to the screen, start audio on the first tap and pause when the page is hidden.

## Optional

- [Privacy policy](https://www.mobitoss.com/privacy.html)
- [Terms of use](https://www.mobitoss.com/termsofuse.html)