EternalEngine Optivation

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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.
Optivation:

About

Optivation is one workspace for the five jobs agencies run every week: forms, databases, pages, time tracking and invoicing. The whole client lifecycle runs in one system on shared data, not across five separate tools. A client intake form writes straight into your database as a record. Every record opens into a full page with notes, files, sub-tasks and a built-in timer. The hours you log there become the line items on an invoice, generated from that same record. It's built for solo consultants and small studios billing hourly or on retainer. You can start on the free plan. Solo is $19 a month. Studio is $49 a month for up to 3 seats, then $19 for each extra seat. Paid plans come with a 30-day free trial.
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
Optivation:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Not Supported
Android Supported
Chromebook Not Supported
EternalEngine:

Audience

Service businesses and small businesses
Optivation:

Audience

Solo consultants, freelancers, and small agency studios in design, marketing, and consulting that bill hourly or on retainer, have outgrown single-purpose freelancer tools, and find enterprise PSA platforms overkill.
EternalEngine:

Support

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

Support

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

API

Offers API Not Supported
Optivation:

API

Offers API Not Supported
EternalEngine:

Screenshots and Videos

Optivation:

Screenshots and Videos

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
Optivation:

Pricing

$19/month
Optivation uses flat pricing — no per-seat cost for solo operators.

Forms Free — $0
Client intake and lead-capture forms. Up to 3 active forms and 50 submissions per month, viewed in-app and exported to CSV. Docs and community support.

Solo — $19/month ($190/year, two months free)
Everything needed to run client work from first task to paid invoice: Inbox, Pages, Databases, Contacts, time tracking, branded invoicing, Forms and Dashboards, AI Advisor and Assistant, full API and MCP access, and Gmail/Outlook integration. One seat, 1M AI tokens per month. Email support.

Studio — $49/month ($490/year, two months free)
Everything in Solo, plus team roles and permissions, real-time co-editing, team chat, access groups, a 7-year compliance-grade audit log, and 5M AI tokens shared across seats. Up to 3 seats included; additional seats are $19/seat per month. Priority email support.

Free trial: 30 days, no credit card required, with all Solo features unlocked. If you do not upgrade, the account moves to the Forms Free plan and your data is retained. Annual billing saves two months on Solo and Studio.
Free Version Supported
Free Trial Supported
EternalEngine:

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
Optivation:

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
Optivation:

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/
Optivation:

Company Information

Optivation
New Zealand
www.optivation.io
EternalEngine:

Alternatives

Optivation:

Alternatives

EternalEngine:
Optivation:
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EternalEngine:
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EternalEngine:
Optivation:
EternalEngine:
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Optivation:
EternalEngine:

Categories

Optivation:

Categories

Project Management Supported
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
Optivation:

Project Management Features

Agile Methodologies Supported
Budget Management Not Supported
Client Portal Supported
Collaboration Tools Not Supported
Cost-to-Completion Tracking Not Supported
Customizable Templates Supported
Gantt Charts Not Supported
Idea Management Not Supported
Kanban Board Supported
Milestone Tracking Supported
Portfolio Management Not Supported
Resource Management Not Supported
Time & Expense Tracking Supported
Traditional Methodologies Not Supported
EternalEngine:

Integrations

Gmail Not Supported
Microsoft SMTP Service Not Supported
Notion Not Supported
Optivation:

Integrations

Gmail Supported
Microsoft SMTP Service Supported
Notion Supported
EternalEngine:
Claim EternalEngine and update features and information
Claim EternalEngine and update features and information
Optivation:
Claim Optivation and update features and information
Claim Optivation and update features and information