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Flex

flexrentalsolutions.com

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Spec score 9.1 #1 of 27 in Event Rental Software

What it is

Flex brings rental inventory, sales, production operations, 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 generate invoices automatically and accept credit card or ACH payments. It includes quote building, rental contracts, delivery scheduling, and return tracking, but not online booking. The integration list includes QuickBooks, PayEngine, DocuSign, HubSpot, Salesforce, Pro Subrental Marketplace, CrewDriver, Google Calendar, Zapier, and a REST API; its HubSpot CRM integration is in open beta. Flex runs in supported browsers on Windows, Mac, and Linux, with Google Chrome recommended, and the Flex5 app is available for Apple and Android devices. The Flex plan costs $510 a month and includes unlimited users. There is no free plan, but a 30-day trial is available. Flex says it is suited to businesses with 500 or more assets, multiple jobs, or multi-user and multi-location operations.

Spec sheet

What it does
Flex is cloud rental and inventory software aimed at live-event, AV, staging, production and equipment-rental operations.Read 14 Oct 2026 · getapp.com
Purpose
Flex combines rental inventory and production operations, sales, warehouse workflows, crew scheduling, billing, and payments in one platform.Read 8 Oct 2026 · flexrentalsolutions.com
API
Flex5 exposes a beta REST API using API keys and customer-specific Swagger UI documentation.Read 14 Oct 2026 · helpcenter.flexrentalsolutions.com
Integrations
Official integrations include QuickBooks, DocuSign and Zapier, with Zapier workflows able to connect Slack, Gmail and Google Drive.Read 14 Oct 2026 · flexrentalsolutions.com
Security
Flex supports security groups with configurable system permissions, and security policies that can restrict access by time or IP address.Read 8 Oct 2026 · helpcenter.flexrentalsolutions.com
Support
The homepage advertises free support, while the support page lists weekday availability from 6:00 AM to 4:00 PM Mountain Standard Time.Read 8 Oct 2026 · flexrentalsolutions.com
Headquarters
Flex says it is headquartered in Orem, Utah.Read 8 Oct 2026 · flexrentalsolutions.com
Founded
Chris Stein founded Flex in 2009 for live-event and rental operations.Read 8 Oct 2026 · flexrentalsolutions.com
Access
Flex is web-based, works with supported browsers on Windows, Mac, and Linux, and recommends Google Chrome.Read 8 Oct 2026 · helpcenter.flexrentalsolutions.com
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.Read 14 Oct 2026 · helpcenter.flexrentalsolutions.com
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.Read 14 Oct 2026 · helpcenter.flexrentalsolutions.com
Backups
The software services agreement says Flex performs daily full backups and stores them off site.Read 14 Oct 2026 · flexrentalsolutions.com
Barcode scanning
Flex supports barcode and QR workflows for prep, return, free scan in and free scan out.Read 14 Oct 2026 · flexrentalsolutions.com
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.Read 8 Oct 2026 · flexrentalsolutions.com
Billing
Flex can automatically generate invoices and accept credit card or ACH payments.Read 8 Oct 2026 · flexrentalsolutions.com
Company founded
LinkedIn lists Flex Rental Solutions as founded in 2009 by CEO Chris Stein.Read 14 Oct 2026 · linkedin.com
Company headquarters
LinkedIn lists headquarters in Orem, Utah, at 826 S 325 W.Read 14 Oct 2026 · linkedin.com
Company legal name
The provider identifies itself as Flex Rental Solutions, LLC.Read 14 Oct 2026 · flexrentalsolutions.com
Company size
LinkedIn places the company in the 11–50 employee range.Read 14 Oct 2026 · linkedin.com
Contracts
Contracts and electronic signatures are provided through a DocuSign-powered integration.Read 14 Oct 2026 · flexrentalsolutions.com
Crew scheduling
The full platform supports crew scheduling, crew calls and crew communications; GTS does not include crew scheduling.Read 14 Oct 2026 · flexrentalsolutions.com
CRM beta
The HubSpot CRM integration is currently in open beta.Read 8 Oct 2026 · flexrentalsolutions.com
Data separation
The service agreement requires customer data to be stored separately or partitioned to protect security and privacy.Read 14 Oct 2026 · flexrentalsolutions.com
Deployment model
Flex describes itself as cloud based SaaS accessed through browsers and the Flex5 mobile app, with no on-premises installation required.Read 14 Oct 2026 · flexrentalsolutions.com
Documentation
Flex provides a public Help Center with product, mobile, integration, security and API articles plus training and webinars.Read 14 Oct 2026 · flexrentalsolutions.com
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.Read 8 Oct 2026 · flexrentalsolutions.com
Inventory tracking
The platform tracks inventory models, serial units, barcodes, locations, quantities and container contents.Read 14 Oct 2026 · flexrentalsolutions.com
Invoicing
Flex includes invoicing, deposits, payments, refunds and adjustments, with QuickBooks connectivity.Read 14 Oct 2026 · flexrentalsolutions.com
Kits and containers
Equipment can be grouped into kits, racks, cases or other containers so the group travels and scans together.Read 14 Oct 2026 · flexrentalsolutions.com
Licence
Flex is proprietary commercial software governed by a software-services agreement that reserves ownership rights and forbids resale or derivative works.Read 14 Oct 2026 · flexrentalsolutions.com
Limit: integrations
GetApp includes reviewer criticism that Flex lacks some integrations available in competing services.Read 14 Oct 2026 · getapp.com
Limit: mobile feature gaps
Google Play reviewers complain that Flex5 lacks important web features such as detailed quote and invoice views and has navigation and filtering problems.Read 14 Oct 2026 · play.google.com
Limit: performance
GetApp reviewers report slow reaction times and irritating software bugs.Read 14 Oct 2026 · getapp.com
Maintenance
Users can record repairs, cleaning, maintenance procedures and item history, with unavailable equipment removed from the rentable pool.Read 14 Oct 2026 · flexrentalsolutions.com
Mobile app
Flex5 is distributed for Apple and Android devices and includes scanning, inventory, maintenance, pull-sheet preparation, returns and signature capture.Read 14 Oct 2026 · helpcenter.flexrentalsolutions.com
Notable company claim
Flex says customers have scanned more than 250 million assets and that half of its customers remain for at least ten years.Read 14 Oct 2026 · flexrentalsolutions.com
Praise: flexibility
GetApp reviewers repeatedly describe Flex as adaptable to their workflows and useful for inventory, projects and maintenance tracking.Read 14 Oct 2026 · getapp.com
Price listed by GetApp
GetApp lists a starting price of 435 per feature per month and indicates a free trial but no free version.Read 14 Oct 2026 · getapp.com
Pull sheets
Confirmed reservations can generate job pull sheets for warehouse preparation.Read 14 Oct 2026 · flexrentalsolutions.com
Quoting
The full Flex product supports detailed quotes and proposals with line items, pricing and packages.Read 14 Oct 2026 · flexrentalsolutions.com
Rating on GetApp
4.0 out of 5 from 137 reviewsRead 14 Oct 2026 · getapp.com
Rating on Google Play
2.2 out of 5 from 48 reviewsRead 14 Oct 2026 · play.google.com
Reservations
Flex provides reservation and availability management across concurrent jobs and locations.Read 14 Oct 2026 · flexrentalsolutions.com
RFID scanning
RFID is an optional module that can read large groups of tagged assets without line of sight.Read 14 Oct 2026 · flexrentalsolutions.com
Security controls
Administrators can restrict user access by IP address, allowlisted or blocklisted networks and time windows.Read 14 Oct 2026 · helpcenter.flexrentalsolutions.com
Security standards
Flex's Software Services Agreement describes security controls including access controls, firewalls, encryption of data in transit, and intrusion protection systems.Read 8 Oct 2026 · flexrentalsolutions.com
Training
Flex offers onboarding with a dedicated specialist, Flex U, video guides, custom training, a Help Center, webinars, and a user forum.Read 8 Oct 2026 · flexrentalsolutions.com

Plans and prices

Flex Asset Solutions $100 a month monthly basic asset tracking Read 14 Oct 2026 · rentalcrafter.com
RFID module $100 a month monthly add-on RFID scanning added to an existing Flex subscription Read 14 Oct 2026 · helpcenter.flexrentalsolutions.com
Flex GTS $260 a month monthly inventory and availability management · excludes sales and financial functions Read 14 Oct 2026 · rentalcrafter.com
Flex $510 a month Plans from $510/month · unlimited users Read 8 Oct 2026 · flexrentalsolutions.com
Flex Rental Solutions $510 a month monthly unlimited users · full rental, sales, warehouse and financial functionality Read 14 Oct 2026 · flexrentalsolutions.com

Every Flex plan and price →

Strong points and limits

Strong points

  • Quotes reserve gear for specified date ranges.
  • Creates pick lists and truck manifests.
  • Supports barcode and RFID scans.
  • Automates invoices and accepts card or ACH payments.
  • Includes unlimited users on the Flex plan.

Limits

  • Online booking is not included.
  • Costs $510 a month.
  • HubSpot CRM integration is in open beta.
  • Support hours are weekdays, 6:00 AM–4:00 PM MST.

Who it suits

Flex is aimed at rental businesses with substantial inventories, multiple jobs, or multiple users and locations. The maker says it may not suit 1–2 person operations or businesses with budgets under $300/month.

Flex in depth

Read the full write-up

Overview

Flex is an operations platform for rental and production businesses, linking sales commitments with inventory, warehouse work, crew schedules, and payment collection. It makes the most sense for established teams coordinating substantial stock or several jobs and locations; small operators are likely to find both its scope and monthly cost excessive.

The core workflow is coherent: a signed quote reserves gear for its rental dates and can feed warehouse preparation and delivery, then billing. That connection is valuable when equipment passes between sales, warehouse, and field teams. But Flex is not a self-service booking storefront: it has no online booking, which rules it out for businesses that depend on customers reserving directly on the web.

Key features

From quote to return

Quote builder and rental contracts support the sales commitment; reservations then inform pick lists, barcode or RFID scans, and truck manifests. Delivery scheduling and return tracking extend that chain beyond the initial booking. Together, these features suit operations where missed handoffs or double-committed equipment can disrupt multiple jobs. They are more infrastructure than a one- or two-person business may need.

Billing and integrations

Flex can generate invoices automatically and accept credit card or ACH payments, keeping collection within the same operating system. 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, so businesses making that integration central should account for its beta status.

Access, security, and support

Flex is browser-based on Windows, Mac, and Linux, with Chrome recommended, and its Flex5 app is available for Apple and Android devices. Security groups allow configurable system permissions, while policies can limit access by time or IP address. Its service agreement describes controls including access controls, firewalls, encryption in transit, and intrusion protection systems. Flex advertises free support, with weekday support hours of 6:00 AM to 4:00 PM Mountain Standard Time. Onboarding with a dedicated specialist, Flex U, video guides, custom training, a Help Center, webinars, and a user forum give larger teams several routes to adoption and ongoing help.

Pricing

Flex costs $510 a month, with unlimited users. The plan includes quote building, rental contracts, delivery scheduling, and return tracking; there is no free plan, but a 30-day trial is offered. Unlimited users remove a per-seat calculation for growing teams, though the monthly floor remains substantial. Flex itself says it is suited to businesses with 500 or more assets, multiple jobs, or multi-user and multi-location operations, and may not suit one- or two-person businesses or budgets under $300/month. The price makes that warning practical: smaller firms should compare narrower or lower-cost options before committing.

Platforms

The browser product works on Windows, Mac, and Linux with supported browsers, and Flex recommends Chrome. Flex5 extends access to Apple and Android devices. The platform list also includes an API, which may matter to businesses connecting other systems, although the API's capabilities are not described here.

Who it's for

Flex is aimed at rental businesses with sizable inventories, concurrent jobs, and multiple users or locations that need sales, stock handling, scheduling, and billing connected. Its workflow depth and unlimited-user plan are easier to justify when many people share operational responsibility. A small rental shop with a limited inventory, a tight budget, or a need for online customer booking should look elsewhere.

Pros and cons

Pro: A signed quote can reserve gear and carry the job into pick lists, scans, and truck manifests, reducing the gap between sales and fulfillment.

Pro: Automatic invoices and card or ACH payments extend the workflow through collection, while integrations cover accounting, CRM, documents, scheduling, and automation.

Pro: Unlimited users avoid per-seat charges as a team grows, and the trial lasts 30 days.

Con: At $510 a month, the price is difficult to justify for small operators, especially those below Flex's stated scale or budget guidance.

Con: No online booking means customers cannot reserve directly through a booking flow in Flex.

Con: HubSpot CRM is in open beta, making that connection less established than a core operational workflow.

Alternatives

For a smaller event-rental operation, HiveSuite starts with Solo at £34.99 a month, billed monthly and including VAT; it includes all features for one admin and two crew, with a yearly option at £349 per year, inc. VAT. That is a much lower entry point, but its stated Solo allowance is a smaller team.

Rentman is worth comparing if a free plan matters: it offers one, alongside a free trial, and its Rentman Platform plan is €39 a month with CRM and communication, task management, and team collaboration. Choose it when that lower-cost entry and those collaboration tools matter more than Flex's stated connected rental workflow.

HireHop is a better starting point for a business wanting to test rental software without a subscription: its free Starter plan covers one user, quotes and bookings, customer management, basic stock control, and email support.

Bundus is another paid option with a free trial; its Starter plan is described for 200 inventory items and one user, making it more relevant to a smaller operation than Flex's stated target.

Rentificial offers a free-forever Freemium plan capped at 10 assets and one user, so it suits a very small operation looking for a no-cost starting point rather than Flex's larger-scale workflow.

TWICE Party Rental Software has a free Standard plan with all features included, but charges a 1.5% commission on each processed payment and other transactional costs may apply. It is a candidate for businesses prioritizing a free entry point that can accept payment-linked costs.

Current RMS charges $79 a month for the first user and $49 a month per additional user. That structure may suit a business with a small team willing to pay by seat rather than take Flex's unlimited-user plan.

KeysBlu starts with a $199 a month Starter plan for up to 25 units per location, with email and chat support; consider it if that location-based cap and lower starting price fit better than Flex's scale.

For the broader category, see Event Rental Software.

Verdict

Flex is the stronger fit for established rental and production teams that need quotes, inventory reservations, warehouse preparation, delivery, returns, and billing to work as one process. Its broad operational chain and unlimited users are the main reasons to choose it; the 510.00 USD monthly price and lack of online booking are the clearest reasons to look elsewhere. If your business is smaller, budget-constrained, or built around direct customer bookings, a lower-cost alternative is the more sensible choice.

Verdict

Flex connects quoting, warehouse preparation, scheduling, and billing for rental operations. Its stated fit favors larger or multi-location businesses, and the monthly price and lack of online booking are worth weighing.

Where Specifiction places it

Alternatives to FlexAll alternatives →