This is an India-only comparison in the useful sense: both products are sold into the same market, and the difference is not a feature gap but a category gap. One of them is an invoicing tool. The other is, as far as general knowledge of this market goes, an accounting package. Price is the easy part to compare here. The hard part is knowing which of those two problems you have.
Zero rupees, and what free actually means at Zoho Invoice
The price is genuinely zero, stated four ways by the vendor, and there is no paid tier on that page to be tempted up to. What free does come with is a defined envelope: two users, three projects, five hundred invoices a year, and a “Powered by Zoho Invoice” mark on the document. That is a straightforward small-business proposition and it is honest about its edges. What it is not is a set of books.
GST: the one claim, and the three that are absent
Zoho Invoice claims GST-compliant invoices in one click, and that is the whole of its GST position on this page. The term e-invoicing, and the strings e-way bill, GSTR and any reference to filing a return, each appear zero times in the HTML we received. We are deliberately not telling you what GST law requires of your business, what your deadlines are, or what format a submission must take. That is your chartered accountant’s conversation and it is the one fee worth paying. But do read the distinction carefully: a product that can produce a GST-compliant invoice is not a product that files your returns, and this page does not claim it is.
The inactivity clause is the one to read twice
Zoho Invoice publishes a data retention policy that deletes the data of a user inactive for more than 180 days, within the following 20 days, after notifying them, and says you can keep the data by logging back in or creating a backup. For a two-person firm where one person is on leave for a long stretch, that is a real operational risk with no purchase to negotiate. It is published, which is more than most vendors do, and it is on the page, so it is here. Build the backup habit or do not use the free tier.
Where the money actually goes wrong
A small business usually reaches for invoicing software because money is late, not because invoices are hard. Those are different problems and only one of them is a software problem. An automated payment reminder and a WhatsApp-delivered invoice are cheap answers to the second. The first is a receivables process, and it needs a person working a queue with an owner and a promised date, which is a different product category again. If the reason you are reading this page is that a customer owes you money, name the real problem before you compare anything, because a ledger will not chase anyone. Read the Khatabook versus Zoho Books comparison for the other Indian ledger-versus-ledger head-to-head, and the Tally versus Zoho Books comparison for the accounting head-to-head, which also publishes no Tally figure for the same reason this page does.