A SHORTER WAY TO WHAT YOU NEED

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Tools, templates, articles and a little clarity. All in one place.

132 pages to explore.

Ostro

Acceptable Use Policy

Ostro Acceptable Use Policy: permitted payment activity, prohibited misuse, verification, sanctions, receiving details, payouts, and review of restrictions.

Templates

Agency invoice template

An agency invoice template for multiple workstreams, retainers or project deliverables, with an editable Word file and example.

Templates

Branding project brief template

Plan a branding project with an editable brief covering the problem, audience, outputs, inputs, constraints and approval process.

Templates

Branding proposal template

An editable branding proposal with objectives, deliverables, exclusions, milestones and payment terms. Includes a completed example.

Tools

Break-even calculator

Calculate break-even sales units, revenue and contribution per unit from your fixed costs, variable costs and selling price. Include a target profit.

Templates

Business expense tracker template

Download an expense tracker spreadsheet with dates, merchants, categories, receipt references and totals for personal and company-paid expenses.

Templates

Business spreadsheets

Download expense trackers, project budgets and unpaid-invoice trackers with formulas, example data and instructions for Excel or Google Sheets.

Tools

Cash-flow forecast builder

Build a monthly cash-flow forecast with opening cash, cash in and cash out. See closing balances, potential shortfalls and export the forecast to CSV.

Templates

Client email templates

Copy and customize professional payment reminders, proposal follow-ups, scope-change emails and project handovers, with completed examples and usage notes.

Templates

Consulting invoice template

Download a consulting invoice with service periods, day-rate or hourly line items and a completed example you can adapt.

Ostro

Cookie Policy

Ostro Cookie Policy: public website storage, contact-form processing, optional technologies, browser controls, and privacy contact details.

Tools

Credit note generator

Create a credit note referencing an original invoice, with credited items, tax adjustments and a clear reason. Preview and export a professional PDF or CSV.

Templates

Development proposal template

An editable development proposal with objectives, deliverables, exclusions, milestones and payment terms. Includes a completed example.

Tools

Email signature generator

Create a professional email signature with your name, role, company and contact links. Choose a layout, then copy the formatted signature or download the HTML.

Tools

Expense report generator

Create an itemized expense report with dates, merchants, categories, business purposes and receipt references. Separate personal and company-paid costs and export PDF or CSV.

Templates

Freelance invoice template

An editable invoice for independent project or hourly work, with clear line items, a reference, due date and payment instructions.

Tools

Hourly-to-salary calculator

Convert hourly, daily, weekly, fortnightly, monthly and annual gross pay using your own working hours and paid weeks. Compare equivalent amounts before deductions.

Tools

Invoice aging calculator

Build an accounts receivable aging report from invoice due dates, payments and credits. Import CSV, group unpaid balances into aging buckets and export CSV or PDF.

Tools

Invoice generator

Create a professional invoice with your logo, line items, tax and payment details.

Templates

Invoice templates

Download editable freelance, consulting, agency, retainer and milestone invoice templates, with completed examples and a browser-based invoice generator.

Templates

Marketing proposal template

An editable marketing proposal with objectives, deliverables, exclusions, milestones and payment terms. Includes a completed example.

Templates

Milestone invoice template

An editable milestone invoice for staged project billing, with an example that identifies the completed stage and agreed payment amount.

Tools

One-page business plan builder

Create a concise business plan covering customers, your offer, revenue, costs, marketing and milestones. Preview your plan and export a professional PDF.

Templates

Payment reminder email template

Create a polite or firm payment reminder email with your invoice details. Copy the editable message or download free reminder templates and completed examples.

Ostro

Payment Security & Compliance

Learn about Ostro onboarding, identity checks, sanctions screening, monitoring, and the responsibilities of licensed financial partners.

Tools

Payment-fee & FX calculator

Compare payment and FX quotes using your own exchange rates and fees. Calculate the amount received or work backwards to the amount you need to invoice.

Ostro

Privacy Policy

Ostro Privacy Policy for SP STUDIOZ (OPC) PRIVATE LIMITED: information use, financial partners, contact forms, retention, privacy rights, and contact details.

Tools

Profit margin & markup calculator

Calculate profit margin, markup and gross profit, or work backwards from a target margin to a selling price. Free, with clear formulas and examples.

Templates

Project budget template

An editable project budget spreadsheet with cost categories, planned and actual costs, variance formulas and an optional contingency calculation.

Templates

Project handover email template

Send a clear project handover with deliverables, access instructions, known limitations, ownership of next steps and a request for receipt confirmation.

Tools

Project profitability calculator

Calculate project profit after contractors, expenses, payment fees and the value of your time. See your effective hourly return, break-even fee and target price.

Tools

Proposal & scope-of-work builder

Build a client proposal and scope of work with objectives, deliverables, exclusions, milestones and payment terms. Preview and export a professional PDF.

Templates

Proposals & project briefs

Editable proposals and project briefs for website design, branding, development and marketing. Download Word templates and see practical completed examples.

Tools

Purchase order generator

Create a purchase order with buyer and supplier details, line items, quantities, taxes and delivery instructions. Download a professional PDF without signing up.

Tools

QR code generator

Create a static QR code for a website or contact card. Download PNG or SVG files with no account, tracking redirect or expiration date.

Ostro

Receive International Income with Ostro

Receive international income through available USD, EUR, GBP, BRL, MXN, and COP payment routes, subject to eligibility. Explore receiving details and payout choices.

Ostro

Receive International Payments

Share available Ostro receiving details with legitimate clients, employers, customers, and marketplaces to receive supported international payments.

Templates

Retainer invoice template

Create a retainer invoice covering an agreed service period, included work and separately approved overages. Download a Word template and example.

Tools

ROAS & acquisition cost calculator

Calculate return on ad spend, customer acquisition cost and contribution after advertising, acquisition and fulfillment costs. Use your own campaign figures.

Templates

Scope-change email template

Explain a requested project change, its impact on deliverables, price and timing, and the approval needed before additional work begins.

Tools

Statement of account generator

Create a customer statement with opening balance, invoices, payments, credit notes and a running balance. Export a professional statement of account PDF or CSV.

Ostro

Terms of Service

Terms for using Ostro, operated by SP STUDIOZ (OPC) PRIVATE LIMITED. Read about eligibility, payments, fees, payout options, responsibilities, and disputes.

Tools

Timesheet & work-hours calculator

Calculate work hours, unpaid breaks, overnight shifts and weekly totals. Turn your timesheet into a billable amount and export a PDF or CSV.

Templates

Unpaid-invoice tracker template

Track invoice totals, payments, credits, outstanding amounts and days overdue in a spreadsheet with an editable as-of date and working formulas.

Tools

UTM link builder

Build campaign URLs with UTM source, medium, campaign, content and term parameters. Preserve existing URL parameters and copy a properly encoded tracking link.

Tools

VAT / GST calculator

Add or remove VAT or GST using your own tax rate. Calculate net, tax and gross amounts, see the reverse-tax formula and export the breakdown.

Templates

Website design proposal template

An editable website design proposal with objectives, deliverables, exclusions, milestones and payment terms. Includes a completed example.