# FollowUp App vs Simplex by SMS

The clearest difference is ratings volume: FollowUp App at 5 against Simplex by SMS's 1. On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for FollowUp App against 5.0 for Simplex by SMS. That said, the two scores are not equally well evidenced: FollowUp App has 5 ratings behind it against 1, so its average is the more settled of the two.

FollowUp App ships an update every 2 months, Simplex by SMS every 3 months. The most recent releases landed on October 3, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | FollowUp App | Simplex by SMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/followup-app/id1524764151/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/simplex-by-sms/id6450359480/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 342 MB | 347 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Robert Gomez](https://appshunter.io/developer/1833234903) | [Simplex Marketing System](https://appshunter.io/developer/1692911351) |

## What reviewers say

### FollowUp App

[App page](https://appshunter.io/ios/app/followup-app/id1524764151)

This app enables businesses to communicate with customers via SMS text messaging, confirming appointments, marketing offers, and generating reviews. It helps save time and resources compared to traditional phone calls and emails.

**Highlights:** Send SMS messages to customers, Confirm appointments, Market special offers, Generate customer reviews, Text-enable existing business number, Save time and resources

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**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 FollowUp App free?

FollowUp App 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.

### Which has better reviews, FollowUp App or Simplex by SMS?

FollowUp App and Simplex by SMS are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.

### Do FollowUp App or Simplex by SMS have ads?

Neither FollowUp App nor Simplex by SMS shows ads.

### Which is updated more often, FollowUp App or Simplex by SMS?

FollowUp App ships an update every 2 months, and Simplex by SMS every 3 months. Most recently, FollowUp App was updated on October 3, 2026 and Simplex by SMS on September 22, 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.*