Comparison

Simplex by SMS vs FourStage

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Simplex by SMS

This all-in-one platform uses AI to streamline sales and marketing for gym owners. It offers lead generation, automated workflows, reputation management, and a website builder. Seamlessly syncs automated marketing with personal team interaction for a personalized customer experience.

Highlights
  • AI-powered sales and marketing
  • Lead generation from multiple sources
  • Automated workflows
  • Reputation management tool
  • Website builder
  • CRM/lead management
  • 2-way sync with automation
Features
Read full description

Calling all gym owners! Are you tired of juggling multiple systems to manage your sales and marketing efforts? Simplex Marketing System is here to revolutionize your gym's marketing game! Our all-in-one platform, powered by advanced AI technology, is designed to help you streamline your sales and marketing processes, increase efficiency, and drive more revenue. Our platform includes features such as lead generation from multiple sources, automated workflows, and a reputation management tool, all designed to build your gym's online presence and grow your customer base. Our website builder and CRM/lead management system allow you to manage all aspects of your gym's marketing and sales in one easy-to-use platform. But what sets Simplex Marketing System apart is our unique 2-way sync with automation. Our platform seamlessly integrates the experience delivered by automated marketing communications with the personal touch delivered by your team. Humans and robots can work together to provide your gym's customers with a personalized experience that drives results. Don't wait any longer to take your gym's marketing efforts to the next level. Join the thousands of businesses who have already discovered the power of Simplex Marketing System and experience the benefits of seamless automation and human interaction today!

About

FourStage

Features
Read full description

FourStage is a top-of-the-line customer relationship management (CRM) platform designed to help businesses manage their client interactions more efficiently. With its advanced features and capabilities, FourStage offers a comprehensive solution for managing customer data, streamlining sales and marketing activities, and improving business processes. From contact management and sales tracking to marketing automation and analytics, FourStage provides businesses with a complete set of tools to enhance their customer engagement and increase sales. With FourStage, you can store all customer data in one place, track deals, opportunities, and pipelines, automate your marketing tasks, and get real-time insights into your business metrics through detailed analytics and reporting. Whether you're a small business owner or an enterprise-level organization, FourStage can help you take your customer relationship management to the next level. Experience the power of FourStage and transform the way you manage your clients today. FourStage empowers businesses with seamless customer data management, sales tracking, marketing automation, and detailed analytics. Elevate your CRM game with FourStage today!

Screenshots

Simplex by SMS4 screens
FourStage4 screens

Verdict

The call

The clearest difference is iOS requirement: FourStage at 13.0 against Simplex by SMS's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Simplex by SMS ships an update every 3 months, FourStage every 4 months. The most recent releases landed on June 1, 2026 and September 18, 2026 respectively.

Scorecard1 real difference · 8 level
Simplex by SMS versus FourStage: the parameters behind the verdict, then further details
ParameterSimplex by SMSFourStage
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS16.013.0 — better
Further details — not scored
Size347 MB149 MB
Age rating17+17+
DeveloperSimplex Marketing System LLCVertical Axion, LLC

In-app purchases

None

Simplex by SMS

No in-app purchases

None

FourStage

No in-app purchases

Questions

Is Simplex by SMS free?
Simplex by SMS is free to download, with no in-app purchases.
Is FourStage free?
FourStage is free to download, with no in-app purchases.
Do Simplex by SMS or FourStage have ads?
Neither Simplex by SMS nor FourStage shows ads.
Which is updated more often, Simplex by SMS or FourStage?
Simplex by SMS ships an update every 3 months, and FourStage every 4 months. Most recently, Simplex by SMS was updated on June 1, 2026 and FourStage on September 18, 2026.

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