# The Gym Doc vs Simplex by SMS

The Gym Doc and Simplex by SMS are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

The Gym Doc ships an update every 2 months, Simplex by SMS every 3 months. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | The Gym Doc | Simplex by SMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simplex-by-sms/id6450359480/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | — | Free |
| Size | 316 MB | 347 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Zach Carrington Coaching and Consulting, LLC](https://appshunter.io/developer/1559750199) | [Simplex Marketing System LLC](https://appshunter.io/developer/1692911351) |

## What reviewers say

### The Gym Doc

[App page](https://appshunter.io/ios/app/the-gym-doc/id1559750197)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Simplex by SMS

[App page](https://appshunter.io/ios/app/simplex-by-sms/id6450359480)

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:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is The Gym Doc free?

The Gym Doc is free to download, with no in-app purchases.

### Is Simplex by SMS free?

Simplex by SMS is free to download, with no in-app purchases.

### Do The Gym Doc or Simplex by SMS have ads?

Neither The Gym Doc nor Simplex by SMS shows ads.

### Which is updated more often, The Gym Doc or Simplex by SMS?

The Gym Doc ships an update every 2 months, and Simplex by SMS every 3 months. Most recently, The Gym Doc was updated on September 10, 2026 and Simplex by SMS on June 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*