Read this before you outgrow your billing app
In plain words: inventory software keeps an accurate, valued picture of your stock and records every movement in and out. A few terms below: an SKU is one stock item; a GRN (goods receipt note) brings stock in; a lot or batch is stock received together, with its own expiry; FEFO means issue the nearest-expiry batch first; a reorder level is the point that should trigger a purchase; ABC sorts items by how much money they tie up; and the stock ledger is the tamper-proof history of every movement. Fast Inventory does all of this in one system.
Here is the honest part most vendors skip: many small businesses genuinely start best on a cheap billing app. The problem is the day your stock accuracy, batches, reorders or an audit trail start to matter — and a billing app was never built for that. This page tells you which small-business tool fits which stage, so you neither overspend early nor get stuck later.
Is this you?
What a small business really needs from stock software
- A stock figure you can trust, updated at every receipt, issue and transfer — not just at invoicing.
- Batch and expiry with FEFO, for the day your goods or your customers demand it.
- Reorder alerts and simple ABC, so cash is not stuck in slow movers.
- Room to add a second store, more users or barcode without switching systems.
- An audit-ready ledger so any batch can be traced forward and backward in minutes.
- A real person who sets it up, imports your opening stock and trains your team.
Why Fast Inventory for a growing small business
Start small, add as you grow
Begin with the item master and stock movement core — goods receipt, issue, return, transfer — and switch on lot and FEFO, stock taking, ABC, reports or barcode when you need them. You pay for what you run today, not a bloated suite.
Real stock depth, not just billing
Unlike a billing-first app where stock is a by-product of invoicing, Fast Inventory is a proper stock system — movements, lot genealogy, cycle-count variance, valuation and an immutable ledger — so the figure holds up when it matters.
Affordable, scoped for small teams
Per user, per store, or a flat fee, scoped to a small operation — a single-store business pays a fraction of a multi-warehouse one. Itemised written quote within 48 hours, implementation and training included.
Someone actually sets it up
Built in Pune (Nigdi) by Improsys; the same team installs it, imports your opening balances, trains your storekeepers and answers support calls — you are not left alone with a login and a help article.
Never a rip-and-replace later
It shares one platform with Fast Production, Purchase, Billing and Planning, and the Fast WMS superset — so as your small business grows into manufacturing or multi-warehouse, you add capability, not a new system.
Works with Tally and what you have
Fast Inventory integrates with the systems you already run, including Tally — movements can post as stock journals with godown mapping, so your stock and your books finally agree without double entry.
How the options compare for a small business
The tools below are all real and genuinely useful — at different stages. We will be honest: if you only need cheap billing with basic stock, a billing app may be the right call today. Here is where each fits.
| Software | Best for | Stock depth (lot/FEFO, ledger, cycle count, valuation) | Pricing model | Support | Deployment |
|---|---|---|---|---|---|
| Fast Inventory Software | Small manufacturers, distributors and spare-parts stores that need real stock accuracy and room to grow | Deep — movements, lot & FEFO, cycle-count variance, ABC, reorder, valuation, immutable ledger; start small and add modules | Per user, per store, or flat fee — scoped small for Indian SMEs (ask for a quote) | On-site setup, opening-balance import & training from the Pune team that builds it | Cloud and on-premise |
| Vyapar | Very small shops and traders wanting cheap GST billing with basic stock | Billing-led; stock follows invoicing, limited lot genealogy and ledger | Low-cost subscription (confirm quote) | App / online support | Mobile & desktop |
| Zoho Inventory | Small online and multichannel sellers | Order-and-inventory focus; lighter on shop-floor and on-premise store control | Cloud subscription, free starter tier (confirm quote) | Online / global support | Cloud |
| TallyPrime | Small businesses that want accounting-first books with stock | Godown stock; lighter on FEFO issue and cycle-count variance workflow | Perpetual licence plus TSS (confirm quote) | Partner network | On-premise |
| Sortly | Simple visual inventory, supplies and asset tracking | Easy photo/QR tracking; not built for valuation, ledger and multi-store depth | Cloud subscription, free tier (confirm quote) | Online support | Cloud / mobile |
| Marg | Small pharma distributors, chemists and retail billing | Distribution billing & stock; distribution-led rather than manufacturing store control | Licence-based (confirm quote) | Partner network | On-premise |
| Unicommerce | Small e-commerce order fulfilment operations | Fulfilment-led; heavier than a simple small business usually needs for store stock | SaaS subscription (confirm quote) | Online support | Cloud |
How we compare: this table uses each vendor's own public positioning and documented focus. We do not score, rank or give star ratings — we simply describe which type of buyer each tool fits best. Features and pricing change, so confirm the current details with each vendor before you decide.
Best for small Indian manufacturers, distributors and spare-parts stores that have outgrown a billing app and need real stock, batch and reorder depth — with on-site support at pricing scoped small.
If your small business is a shop or online seller and you just need cheap billing, a lighter tool may serve you today — and we will say so. But the moment stock accuracy, batches, reorders, multiple stores or an audit trail start to matter, Fast Inventory gives you a proper stock system with local on-site help and room to grow, so you never have to rip everything out and start again.
Proof, without the marketing
Fast Inventory is a Fast Technology product, built in Pune (Nigdi) by Improsys — a company whose name is short for “improvement in systems,” which began as a systems-improvement consultancy for SME manufacturers across Pune and Maharashtra. It is one of 12 products on a single shared platform, and Improsys carries ISO 9001:2015, ISO 27001:2013 and CMMI Level 5. Its reference deployments span small and mid-size manufacturing, engineering and distribution stores, and the same stock engine serves retail, pharma, food and beverage, chemical, dairy, spare-parts and 3PL operations across India and worldwide, cloud and on-premise.