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Switching · data import

Can I move my existing data into 399Apps when I switch?

Short answer

Yes. You bring your customers, items and stock, ledgers and opening balances into 399Apps’ Nidhi Books by exporting them from Tally, Vyapar or Excel and importing them. There is no one-click pull from a Tally file, but guided onboarding is available for large datasets. Run 399Apps alongside your old tool for one filing cycle so nothing is lost.

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What data comes across

The core records a business needs to keep running import cleanly: your customers and suppliers (parties), your item and stock list with opening quantities and rates, your ledgers and account heads, and your opening balances as on your cut-over date. GST details — GSTIN, tax rates and HSN/SAC codes on your items — carry across so your very first invoice in 399Apps is compliant.

You do not need to re-key years of transactions to get going. Most businesses import masters (parties and items) plus opening balances, set a clean cut-over date, and start billing fresh in 399Apps from that date — while keeping the old software’s history as a read-only backup for reference and audits.

How to switch without losing history

Export your masters and balances from your current tool. Tally exports masters and balances; Vyapar and most billing apps export to Excel/CSV; and if you already keep your list in a spreadsheet, that Excel file is your import source. You then import those files into Nidhi Books — there is no automatic one-click pull from a Tally company file, so a tidy export and a clear cut-over date keep your books clean.

The safest switches are not big-bang. Run 399Apps in parallel with your old software for one filing cycle: bill in 399Apps, compare the reports and GST output against your old tool, and only retire the old system once the numbers match. Keep a backup of your old data until you are fully confident nothing was lost — so switching is reversible, not a leap of faith.

If your dataset is large or messy

For a big item catalogue, multi-year ledgers, or data that needs cleaning before it imports, guided onboarding support is available — the team helps you shape the export, map the columns and load it correctly, so you are not left to figure out a bulk import alone. That is included help, not a paid migration project, which matters when you are moving on a ₹399/month plan rather than an enterprise contract.

Self-hosting customers get the same path: 399Apps provides importers so you can onboard users and load your data on your own server. Either way, the goal is the same — you keep your customers, stock and balances, and start billing in the cloud without re-entering everything by hand.

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FAQ

More questions

Can I import my Tally data into 399Apps? +
Yes. You export your masters — parties, items and opening balances — from Tally and import them into Nidhi Books. There is no automatic one-click pull from a Tally company file, so a clean export and a clear cut-over date keep your books tidy. Guided onboarding is available if your Tally data is large.
Can I import my customers and items from an Excel sheet? +
Yes. If you already keep your customer list, item list or stock in Excel or CSV, that spreadsheet is your import source — you map the columns and load it into Nidhi Books. Most businesses that come off Vyapar or a plain Excel workbook import this way.
Will I lose my past invoices and history if I switch? +
No. You keep your old software and its history as a read-only backup, and start billing fresh in 399Apps from a chosen cut-over date. Most businesses import their masters and opening balances rather than re-keying years of transactions, so nothing is lost and you are up and running quickly.
Do I have to stop using my old software immediately? +
No — and you should not. The safest switch is a parallel run: bill in 399Apps alongside your old tool for one filing cycle, compare the reports and GST output, and only retire the old system once the numbers match. Keep a backup until you are confident.
How long does the switch take? +
For a typical small business importing customers, items and opening balances, you can be billing in 399Apps the same day. Larger or messier datasets take longer, which is where guided onboarding helps you shape, map and load the data correctly.
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