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SPECIFICTION
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DayZero vs Hili Billing

DayZero

ondayzero.com

Hili Billing

hiliai.com

Side by side

FigureDayZeroHili Billing
Price from—$29/mo
Free plan—Yes
Free trial——
Open source——
WebYesYes
APIYes—
Plans published14
Spec score · Invoice Approval Software7.3 (#30)8.6 (#6)
HeadquartersUnited StatesHili identifies Toronto, Canada as its base.
IntegrationsLive connectors listed include Plaid, Stripe, Square, Shopify, Ramp, and Slack; QuickBooks Online and Xero are listed for one-time migration.Paid plans include property-management and field-service integrations plus Zapier; Hili names AppFolio, Yardi, and Buildium as examples of connected property systems.
SecurityDayZero states that it uses AES-256 encryption at rest, TLS 1.3 in transit, business-scoped isolation, and a tamper-evident audit trail; SOC 2 Type II is in progress with a Q1 2027 target.Hili says data is encrypted in transit and at rest, workspace records are isolated, and key changes are recorded as events.
What it doesDayZero is an accounting and finance firm that handles company finance on software it built, either running the work end to end or supporting a customer’s team.Hili coordinates property maintenance from the initial request through work orders, scheduling, field updates, approvals, invoicing, and completion.

Plans

DayZero

  • Scoped engagementPriced on request

DayZero pricing →

Hili Billing

  • StarterFree
  • Pro$29 a month
  • Business$399 a month
  • EnterprisePriced on request

Hili Billing pricing →

In their own words

DayZero

DayZero has no write-up on Specifiction yet; its figures are above.

Visit ondayzero.com

Hili Billing

Hili Billing keeps estimates, owner approvals, vendor invoices, and payment approval together on a maintenance work order. Vendors post estimates and invoices, while property teams review them against the work performed. Owners can approve or decline through a private link without an account or login. The system records who posted or changed billing information and who approved it, preserving a history that cannot be overwritten. Human review remains required: the Assistant may flag mismatches but does not approve or pay bills by default. Starter is free for light use and includes the full product, with no integrations listed. Pro costs $29 a month and adds property-management and field-service integrations plus Zapier automations. Business costs $399 a month and includes integrations, assisted onboarding, and priority support. Enterprise uses custom pricing, onboarding, and terms. Hili says the web product is invitation-only during private beta, with no free trial.

Visit hiliai.com