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Related Products
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EternalEngine:
About
EternalEngineOS combines five business functions — CRM, invoicing, payments, booking, and email — in one app for solo founders and small service businesses. The one-person business back office: CRM, invoicing, payments, booking and email. Manage clients and contacts, send invoices and estimates, take payments, schedule bookings on your calendar, and send email — all in one place, without juggling five separate subscriptions. EternalEngineOS replaces the patchwork of separate CRM, invoicing, payment, booking and email tools with one simple app designed for one-person businesses. Free tier: $0, no credit card required. Basic: $9.95/mo flat with a 30-day no-card trial. Team $49/mo, Pro $99/mo, Business $199/mo. Built for solo founders and small businesses of every kind. Start free, no card. Basic is $9.95/mo when you're ready. Launched 3 months ago and in beta.
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Koira:
About
Koira is field service management software for solo trade contractors and small home-service businesses. It combines a customer-facing website and online job booking with business-phone answering and follow-up for missed calls. Contractors can send good-better-best estimates for customer approval and collect deposits, then issue invoices and accept payments, including QR-code payments at the job site. Koira also supports customer review requests and neighborhood postcard marketing. The product brings lead response, scheduling, estimates, payments and post-job follow-up into a single workflow for trades such as plumbing, HVAC, electrical, roofing, cleaning and landscaping. Plans are priced per business rather than per user.
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EternalEngine:
Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Koira:
Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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EternalEngine:
Audience
Service businesses and small businesses
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Koira:
Audience
Solo trade contractors and home service shops of 2 to 15 people: roofing, plumbing, HVAC, electrical, painting, lawn and landscape, cleaning, pressure washing, pest control, pool service, remodeling and handyman businesses.
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EternalEngine:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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Koira:
Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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EternalEngine:
API
Offers API
Not Supported
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Koira:
API
Offers API
Not Supported
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EternalEngine:
Screenshots and Videos |
Koira:
Screenshots and VideosNo images available
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EternalEngine:
Pricing
$9.95/month
Free $0 (no card, not a trial). Basic $9.95/mo flat, with a 30-day no-card trial. Team $49/mo. Pro $99/mo. Business $199/mo.
Free Version
Supported
Free Trial
Supported
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Koira:
Pricing
$0/month
Office is free. Grow is $249 per month plus usage at cost; Front Office is $499 per month with usage included. Plans have no per-person fee. U.S. card payments incur Stripe's 2.9% + $0.30 processing fee plus Koira's plan-dependent fee: 2% on Office, 1% on Grow, or 0.5% on Front Office.
Free Version
Supported
Free Trial
Not Supported
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EternalEngine:
Reviews/
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Koira:
Reviews/
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EternalEngine:
Training
Documentation
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Koira:
Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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EternalEngine:
Company InformationEternalEngine
Founded: 2026
United States
eternalengineos.io/basic/
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Koira:
Company InformationKoira
Founded: 2026
United States
www.koira.ai
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EternalEngine:
Alternatives |
Koira:
Alternatives |
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EternalEngine:
Categories |
Koira:
Categories |
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EternalEngine:
Business Management Features
Billing & Invoicing
Supported
CRM
Supported
Employee Management
Not Supported
Financial Management
Supported
Inventory Management
Not Supported
Marketing Management
Supported
Order Management
Not Supported
Point of Sale (POS)
Not Supported
Project Management
Not Supported
Purchasing
Not Supported
Scheduling
Supported
Time & Expense Tracking
Not Supported
Training Management
Not Supported
Vendor Management
Not Supported
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EternalEngine:
Integrations
QuickBooks Online
Not Supported
Stripe
Not Supported
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Koira: | |||||
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EternalEngine:
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Koira:
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