EternalEngine Koira

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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.
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.
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
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
EternalEngine:

Audience

Service businesses and small businesses
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.
EternalEngine:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported
Koira:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
EternalEngine:

API

Offers API Not Supported
Koira:

API

Offers API Not Supported
EternalEngine:

Screenshots and Videos

Koira:

Screenshots and Videos

No images available
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
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
EternalEngine:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Review this Software
Koira:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
EternalEngine:

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
Koira:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
EternalEngine:

Company Information

EternalEngine
Founded: 2026
United States
eternalengineos.io/basic/
Koira:

Company Information

Koira
Founded: 2026
United States
www.koira.ai
EternalEngine:

Alternatives

Koira:

Alternatives

EternalEngine:
Koira:
EternalEngine:
Koira:
Zebu

Zebu

Zebu HQ
EternalEngine:
Koira:
MightyCrews

MightyCrews

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EternalEngine:
Atlas Solo

Atlas Solo

MARUPA
Koira:
EternalEngine:

Categories

Koira:

Categories

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
EternalEngine:

Integrations

QuickBooks Online Not Supported
Stripe Not Supported
Koira:

Integrations

QuickBooks Online Supported
Stripe Supported
EternalEngine:
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Koira:
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