Aquarium Maintenance Business Invoicing App (2026)
For a solo aquarium maintenance business, ShowTheReceipts ($15/mo) runs on recurring billing — monthly service contracts that invoice themselves and charge a card on file, with livestock, filters, and one-off repairs added as separate lines on the same account.
How we picked
Entry-plan prices as published in 2026, checked against each vendor's own pricing page. Tools were judged on the solo operator's real workflow — recurring monthly service contracts with parts and livestock added on, billed to a card on file — not on multi-tech routing.
| Software | Starting price | Best for |
|---|---|---|
| ShowTheReceipts That's us | $15/mo | Solo operators: monthly service contracts on autopilot, parts and livestock added per visit |
| Wave | Free | Manual invoicing on a zero budget |
| Kickserv Flex | $19/mo | Budget scheduling with basic invoicing |
| Jobber | $29/mo (Core) | Crews running multiple service techs |
| Housecall Pro | $59/mo | Staffed offices wanting a full CRM |
The solo operator’s real workflow
Aquarium maintenance is almost pure recurring revenue. Twenty tanks on monthly contracts is a predictable business — as long as twenty invoices don’t need to be created by hand every month.
Recurring billing on a card on file is the entire game. Everything else is a detail.
1. ShowTheReceipts — $15/mo
Monthly contracts that invoice and charge themselves, with parts and livestock added per visit. See how to price a recurring service contract.
2. Wave — free
Free, fully manual.
3. Kickserv Flex — $19/mo
Budget scheduling and invoicing.
4. Jobber — $29/mo (Core)
Built for dispatching several techs.
5. Housecall Pro — $59/mo
Full CRM for a staffed office.
Frequently asked questions
What does an aquarium maintenance business need from software?
Recurring monthly billing on a card on file, plus a way to add parts, livestock, and one-off repairs to the same account without breaking the contract. Route optimization only matters once you've got more tanks than one van can reach.
What do I get with ShowTheReceipts for $15/month?
Invoicing, card payment, and one tax-ready ledger. Recurring invoicing and card-on-file charging — the features this business actually runs on — are Pro-plan features at $39/month.
How do I bill parts on top of a service contract?
Add them as line items on that month's invoice. The base contract amount stays constant so the client isn't re-reading their agreement every month, and the extras are visible instead of buried.