Who it is built for
Invoice Simple is an estimate and invoice app for small businesses and freelancers. Many new pressure washing and window cleaning operators start with it before moving to scheduling software.
Invoice Simple plans (checked Sep 23, 2026)
| Plan | Monthly | Annual | Invoices |
|---|---|---|---|
| Essentials | $6.99 | $69.99 | Up to 3 / month |
| Plus | $14.99 | $149.99 | Up to 10 / month |
| Premium | $21.99 | $219.99 | Unlimited |
Fit for pressure washing and window cleaning
| Need | What the vendor publishes |
|---|---|
| Scheduling / recurring routes | Not an invoice-app feature |
| Deposits | Premium plan |
| Client signatures | Premium plan |
When to stay
Stay while you do fewer than ~10 jobs a month and schedule from a calendar. The upgrade trigger is usually recurring customers you keep forgetting to rebook.
Published pricing side by side
| Tool | Type | Published pricing | Exterior-cleaning quoting |
|---|---|---|---|
| Field service | Core $49/mo to Plus $499/mo (monthly, no commitment); +$29/mo per extra user | General quotes | |
| Home service | Basic $79/mo ($59 billed annually) to Max $329/mo ($299 annually) | General quotes | |
| Quoting | Startup free; Scaling $179/mo; Pro $229/mo | Yes - website quoting calculator | |
| Quoting + CRM | Tiered - see vendor page (not verified by us) | Yes | |
| Field service | Quote-only (seat-based) | General quotes | |
| Invoicing | $6.99-$21.99/mo | No | |
| ExteriorClean HQ | Exterior cleaning | $39/mo founding (in development) | Yes (planned) |
Quote, schedule and invoice in one place - $39/mo founding rate
ExteriorClean HQ is in development for pressure washing and window cleaning businesses. Founding members lock $39/mo for life. No payment today.
Software for exterior cleaning operators
Pressure washing softwareQuotes, routes and invoices for washing crews (in development).Instant quotes from your price sheetMeasure, price and send before you leave the driveway.Window cleaning softwareBuilt around recurring rounds.Pricing: $39/mo founding rateOne published price, locked for founding members.
Frequently asked questions
How much is Invoice Simple?
$6.99, $14.99 or $21.99 per month (or $69.99, $149.99, $219.99 per year) depending on invoice volume (Sep 23, 2026).
When should a washing business upgrade?
When you pass the invoice cap, need scheduling, or run recurring rounds. Our free invoice template covers the very start.
Sources
- Invoice Simple - Pricing page (accessed 2026-09-23) - Checked 2026-09-23