# Simple One vs Dromos

The clearest difference is price: Dromos at Free against Simple One's $0.99. Dromos also leads on update cadence (every 11 days vs every 13 months). Simple One's advantage is iOS requirement (16.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Dromos is free to download; Simple One costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simple One ships an update every 13 months, Dromos every 11 days. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Simple One | Dromos |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/simple-one-rep-max-calculator/id1191599672/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 11 days** |
| Monetization | Paid | — |
| Size | 2 MB | 5 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Above AS](https://appshunter.io/developer/894620418) | [Emmanuel Breard](https://appshunter.io/developer/1890869933) |

## What reviewers say

### Simple One

[App page](https://appshunter.io/ios/app/simple-one-rep-max-calculator/id1191599672)

This app helps you accurately determine your one-rep max (1RM) using multiple proven formulas. It provides reliable estimates to help you choose the right weights for your training, ensuring safer and more effective strength progression.

**Highlights:** Accurate one-rep max estimates, Multiple proven calculation formulas, Determine training weights, Fast and simple interface, Distraction-free design

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

**In-app purchases:** none


### Dromos

[App page](https://appshunter.io/ios/app/dromos/id6761685023)

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

**In-app purchases:** none


## Frequently asked questions

### Is Simple One free?

Simple One costs $0.99, with no in-app purchases.

### Is Dromos free?

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

### Do Simple One or Dromos have ads?

Neither Simple One nor Dromos shows ads.

### Which is updated more often, Simple One or Dromos?

Simple One ships an update every 13 months, and Dromos every 11 days. Most recently, Simple One was updated on October 20, 2026 and Dromos on October 6, 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.*