A small contractor usually ends up with a site app for attendance and material, and Tally for the books, with someone re-typing bills between them. The choice is whether to keep two systems or move to one, and what each costs for five people.
Site apps such as Onsite and Powerplay start from the site: daily attendance, labour payments, material requests and stock at site, photos and issues. They are quick to roll out to supervisors. Most leave the books, GST returns and TDS to an accounting package.
Accounting software such as TallyPrime, BUSY or Zoho Books keeps the ledger, GST and TDS correct. It knows nothing about a BOQ, a measurement or an RA bill, so project cost is worked out in Excel from what the site sends.
An ERP holds both: the BOQ, what was measured and billed, what the site consumed and paid, and the ledger those entries post to. ERPNext and Odoo can be configured for construction; Rebota ships with it.
None of the three is right for everyone. The question is where your money leaks today: on site (labour and material), in billing (RA bills, retention, advances), or in the books.
Take this list into every demo and ask to see each step on one sample project, end to end.
Onsite (onsiteteams.com). A site-first app with labour attendance and salary, material requests and inventory, tasks, snag lists and sub-contractor work orders with RA billing on the Business plan. BOQ and client RA bills, budget control, purchase orders and staff payroll are on Business+. Accounting integration with Tally or Zoho is on Enterprise or an add-on. Prices are per user per year; there is a free demo, not a free trial.
Powerplay (getpowerplay.in). A site-team app: project and work tracking, material at site, labour attendance and payroll, issues, reports and petty cash. It does not publish prices; you request a demo. Its home page does not mention accounting, GST invoicing, BOQ or RA bills, so ask about them directly.
TallyPrime. The books, GST and TDS, and the package almost every Indian CA can open. No BOQ, measurement or RA bill; contractors usually pair it with Excel or a site app. Prices compared on Tally vs BUSY.
ERPNext. Open source (GPL-3.0) with projects, purchase, stock and accounts. Construction billing has to be set up, so it suits a firm with someone who can configure it. Costs on Odoo vs ERPNext.
Rebota. One system for the BOQ, RA bills with retention and advances, sub-contract work orders, labour attendance and wages, purchase, site stock, GST invoicing with e-invoice and e-way bill, and the accounts. It imports Tally data free. After the 15-day trial it stays free for 1 user and 30 GST invoices a month.
A contractor with an owner, an accountant, a purchase person and two site engineers, before GST:
Prices checked on the vendors' own pages: Onsite pricing and Powerplay on 24 October 2026; Tally's cost guide and Frappe Cloud pricing on 20 October 2026. Onsite's plan cards show a 5-user minimum and its FAQ a 3-user minimum; confirm with them. Rebota's price is from rebota.in/pricing.
If attendance by GPS or face matters most, Onsite sells it (Enterprise, or a ₹20,000 a year add-on) and Rebota does not. If your supervisors only need a simple phone app and your accountant will not leave Tally, a site app plus Tally is a sensible setup, as long as you accept re-typing bills or pay for the integration.
If you have a developer and want to own and change the code, ERPNext is the honest pick. If you are a large developer with sales, bookings and RERA reporting, look at real-estate ERPs; Rebota is aimed at small and mid-sized contractors and builders.
| What you need | Onsite | Powerplay | TallyPrime | ERPNext | Rebota |
|---|---|---|---|---|---|
| How it is priced | Per user, per year | Not published (demo) | One-time licence or yearly rental | Free software; you pay hosting | Per company, per year |
| Published price | ₹12,000 / ₹15,000 per user a year + GST | — | Silver ₹22,500, Gold ₹67,500 + GST | Frappe Cloud from ₹410 a month | Starter ₹9,832 + GST first year, 5 users |
| Free trial or free plan | Free demo | Demo on request | — | Free to self-host | 15-day trial, then free for 1 user |
| BOQ and RA bills | Business+ and above | Not on its home page | With configuration | Starter and above | |
| Retention and advance recovery on bills | Ask in the demo | Ask in the demo | With configuration | Built in | |
| Labour attendance and wages | All plans | With configuration | All paid plans | ||
| Ledger, GST returns, TDS | Via Tally or Zoho integration | Petty cash only on its home page | With configuration | Built in | |
| Tally data | Integration add-on ₹20,000 a year | — | — | Varies | Free XML import |
| Best fit | Site teams; books stay in Tally | Site teams wanting a demo-led rollout | Books and GST only | Firms with a developer | Contractors wanting one system |
Contractors, sub-contractors and builders who bill clients on RA bills, hold or suffer retention, pay labour weekly or monthly and want project cost, GST and the books in one place, without paying per user.
A firm that only needs site attendance and photos, with the books staying in Tally by choice. A site app is simpler there. Also large real-estate developers whose main need is sales, bookings and RERA reporting.
Onsite wins on GPS and face attendance and on a phone-first rollout to many supervisors. TallyPrime wins when the accountant is the main user. ERPNext wins when you have a developer and want to own the code.
One or two running projects, the owner on every site, and a CA happy with an Excel bill register. The case changes when RA bills, retention and labour advances run on more projects than one person can hold in their head.
Per-user pricing grows with every site engineer you add. Two systems cost re-typing time, or an integration fee. Any system costs the weeks it takes to load your BOQs, workers and opening balances; ask who does that and what it costs.
If the site is the problem and the books are fine, a site app plus Tally works. If the money leaks between the BOQ, the RA bill and the ledger, put them in one system, and compare the five-user price before the feature list.
In every demo, ask the vendor to take one sample BOQ item from measurement to RA bill to the client's payment with retention held, then show where that entry sits in the ledger and the GST return. A system that needs a spreadsheet anywhere in that chain will need it every month.