# Simplex by SMS vs Nextbox

The clearest difference is ads: Simplex by SMS at none against Nextbox's shown. Nextbox's advantage is update cadence (every 9 days vs every 3 months) and iOS requirement (14.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

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

Simplex by SMS ships an update every 3 months, Nextbox every 9 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Simplex by SMS | Nextbox |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 347 MB | 22 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Simplex Marketing System](https://appshunter.io/developer/1692911351) | [Next Level Coder, LLC](https://appshunter.io/developer/1725712828) |

## What reviewers say

### 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


### Nextbox

[App page](https://appshunter.io/ios/app/nextbox-fast-fun-email/id6504255291)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simplex by SMS free?

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

### Is Nextbox free?

Nextbox is free to download, with no in-app purchases.

### Do Simplex by SMS or Nextbox have ads?

Nextbox shows ads; Simplex by SMS does not.

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

Simplex by SMS ships an update every 3 months, and Nextbox every 9 days. Most recently, Simplex by SMS was updated on November 3, 2026 and Nextbox on November 8, 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.*