# Simple Strength NLP vs RoxLab

The clearest difference is in-app purchases: RoxLab at none against Simple Strength NLP's 1. RoxLab also leads on update cadence (every 4 days vs every 2 weeks). Simple Strength NLP's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Simple Strength NLP sells 1 one-off in-app purchase. RoxLab asks for nothing beyond the download.

Simple Strength NLP ships an update every 2 weeks, RoxLab every 4 days. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Simple Strength NLP | RoxLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/simple-strength-nlp/id6756832856/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free | — |
| Size | 3 MB | 27 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Jared Meyer](https://appshunter.io/developer/1863153769) | [Sahastra Bhadana](https://appshunter.io/developer/1725260203) |

## What reviewers say

### Simple Strength NLP

[App page](https://appshunter.io/ios/app/simple-strength-nlp/id6756832856)

This app guides novice lifters through a linear progression strength training program. It automatically adjusts weights, suggests modifications when you stall, and tracks your progress. Features include a rest timer, workout history, and an offline mode.

**Highlights:** Automatic weight progression, Rest timer with Lock Screen widget, Workout history and personal records, Apple Health integration, Plate calculator, Offline functionality, 1RM calculator

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Simple Strength | $7.99 | one-time |


### RoxLab

[App page](https://appshunter.io/ios/app/roxlab-hyrox-trainer/id6761068054)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Simple Strength NLP free?

Simple Strength NLP is free to download, with in-app purchases available.

### Is RoxLab free?

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

### Do Simple Strength NLP or RoxLab have ads?

Neither Simple Strength NLP nor RoxLab shows ads.

### Which is updated more often, Simple Strength NLP or RoxLab?

Simple Strength NLP ships an update every 2 weeks, and RoxLab every 4 days. Most recently, Simple Strength NLP was updated on November 5, 2026 and RoxLab on November 9, 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.*