Flex
What Flex is
Flex brings rental inventory, production operations, sales, warehouse workflows, crew scheduling, billing and payments into one platform. A signed quote reserves equipment for its date range and can lead to a warehouse pick list, barcode or RFID scans, and a truck manifest. Flex can automatically generate invoices and accept credit card or ACH payments. It includes quote building, rental contracts, delivery scheduling and return tracking, but not online booking. The platform works in supported browsers on Windows, Mac and Linux, with Google Chrome recommended, and the Flex5 app is available for Apple and Android devices. Listed connections include QuickBooks, PayEngine, DocuSign, HubSpot, Salesforce, Pro Subrental Marketplace, CrewDriver, Google Calendar, Zapier and a REST API; the HubSpot CRM integration is in open beta. Flex supports configurable security groups and policies that can restrict access by time or IP address. The plan costs $510 a month and includes unlimited users; a 30-day trial is available, but there is no free plan. Flex says it suits operations with 500 or more assets, multiple jobs, or multiple users and locations.
Who it suits
Flex is aimed at rental and production businesses with 500 or more assets, multiple jobs, or multi-user and multi-location operations. The maker says it may not suit one- or two-person operations or businesses with budgets under $300/month.
What it does well
- Signed quotes reserve equipment for their date range
- Barcode and RFID scans support warehouse workflows
- Automatic invoices and credit card or ACH payments
- Unlimited users on the $510 a month plan
- 30-day trial available
What to know first
- No free plan
- Online booking is not included
- HubSpot CRM integration is in open beta
- Maker says it may not suit one- or two-person operations
Limits
There is no free plan. The listed Flex plan costs $510 a month and includes unlimited users; a 30-day trial is available. Online booking is not included.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Flex Asset Solutions | monthly · basic asset tracking | $100 a month |
| RFID module | monthly add-on · RFID scanning added to an existing Flex subscription | $100 a month |
| Flex GTS | monthly · inventory and availability management · excludes sales and financial functions | $260 a month |
| Flex | Plans from $510/month · unlimited users | $510 a month |
| Flex Rental Solutions | monthly · unlimited users · full rental, sales, warehouse and financial functionality | $510 a month |
As flexrentalsolutions.com lists them, read 14 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Flex website.
- Use the 30-day trial to evaluate the platform.
- Access Flex in a supported browser on Windows, Mac, or Linux; Google Chrome is recommended.
- Install the Flex5 app on an Apple or Android device if mobile access is needed.
- Arrange onboarding with a dedicated specialist or use Flex U and the other training resources.
Verdict
Flex connects equipment reservations to warehouse preparation, billing and payments, with mobile apps and listed integrations. Its $510 a month plan and stated business fit make it worth considering for larger rental operations, rather than the smallest teams.
Questions
How much does Flex cost?
The Flex plan is $510 a month and includes unlimited users. A 30-day trial is available.
Does Flex have a free plan?
No. Flex offers a 30-day trial.
Which platforms can I use?
Flex works in supported browsers on Windows, Mac, and Linux, and recommends Google Chrome. Its Flex5 app is available for Apple and Android devices.
What integrations does Flex list?
Connections include QuickBooks, PayEngine, DocuSign, HubSpot, Salesforce, Pro Subrental Marketplace, CrewDriver, Google Calendar, Zapier, and a REST API. The HubSpot CRM connection is in open beta.
Does Flex support online booking?
No. Online booking is not included.
What support and training are available?
Flex advertises free support, with weekday availability from 6:00 AM to 4:00 PM Mountain Standard Time. Training options include onboarding with a dedicated specialist, Flex U, video guides, custom training, a Help Center, webinars, and a user forum.
Facts from Flex's own pages
- Access
- Flex is web-based, works with supported browsers on Windows, Mac, and Linux, and recommends Google Chrome. · helpcenter.flexrentalsolutions.com, 8 Oct 2026
- API
- Flex5 exposes a beta REST API using API keys and customer-specific Swagger UI documentation. · helpcenter.flexrentalsolutions.com, 14 Oct 2026
- API limits
- Enterprise and GTS accounts receive a standard 100,000-request monthly API allowance, while Lite has no API access; concurrency is capped at 30 requests. · helpcenter.flexrentalsolutions.com, 14 Oct 2026
- API support
- Flex states that it does not currently provide support for API use and that Swagger alone is insufficient to fully understand the API. · helpcenter.flexrentalsolutions.com, 14 Oct 2026
- Backups
- The software services agreement says Flex performs daily full backups and stores them off site. · flexrentalsolutions.com, 14 Oct 2026
- Barcode scanning
- Flex supports barcode and QR workflows for prep, return, free scan in and free scan out. · flexrentalsolutions.com, 14 Oct 2026
- Best fit
- Flex says it is suited to businesses with 500 or more assets, multiple jobs, or multi-user and multi-location operations, and says it may not suit 1–2 person operations or businesses with budgets under $300/month. · flexrentalsolutions.com, 8 Oct 2026
- Billing
- Flex can automatically generate invoices and accept credit card or ACH payments. · flexrentalsolutions.com, 8 Oct 2026
- Company founded
- LinkedIn lists Flex Rental Solutions as founded in 2009 by CEO Chris Stein. · linkedin.com, 14 Oct 2026
- Company headquarters
- LinkedIn lists headquarters in Orem, Utah, at 826 S 325 W. · linkedin.com, 14 Oct 2026
- Company legal name
- The provider identifies itself as Flex Rental Solutions, LLC. · flexrentalsolutions.com, 14 Oct 2026
- Company size
- LinkedIn places the company in the 11–50 employee range. · linkedin.com, 14 Oct 2026
- Contracts
- Contracts and electronic signatures are provided through a DocuSign-powered integration. · flexrentalsolutions.com, 14 Oct 2026
- Crew scheduling
- The full platform supports crew scheduling, crew calls and crew communications; GTS does not include crew scheduling. · flexrentalsolutions.com, 14 Oct 2026
- CRM beta
- The HubSpot CRM integration is currently in open beta. · flexrentalsolutions.com, 8 Oct 2026
- Data separation
- The service agreement requires customer data to be stored separately or partitioned to protect security and privacy. · flexrentalsolutions.com, 14 Oct 2026
- Deployment model
- Flex describes itself as cloud based SaaS accessed through browsers and the Flex5 mobile app, with no on-premises installation required. · flexrentalsolutions.com, 14 Oct 2026
- Documentation
- Flex provides a public Help Center with product, mobile, integration, security and API articles plus training and webinars. · flexrentalsolutions.com, 14 Oct 2026
- Founded
- Chris Stein founded Flex in 2009 for live-event and rental operations. · flexrentalsolutions.com, 8 Oct 2026
- Headquarters
- Flex says it is headquartered in Orem, Utah. · flexrentalsolutions.com, 8 Oct 2026
- Integrations
- Official integrations include QuickBooks, DocuSign and Zapier, with Zapier workflows able to connect Slack, Gmail and Google Drive. · flexrentalsolutions.com, 14 Oct 2026
- Inventory and jobs
- A signed quote reserves gear for its date range and can generate a warehouse pick list, barcode or RFID scans, and a truck manifest. · flexrentalsolutions.com, 8 Oct 2026
- Inventory tracking
- The platform tracks inventory models, serial units, barcodes, locations, quantities and container contents. · flexrentalsolutions.com, 14 Oct 2026
- Invoicing
- Flex includes invoicing, deposits, payments, refunds and adjustments, with QuickBooks connectivity. · flexrentalsolutions.com, 14 Oct 2026
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