# ADR System vs RSP App

The clearest difference is update cadence: RSP App at every 2 months against ADR System's every 7 months. RSP App also leads on iOS requirement (13.0 vs 17.6). On price, ads, 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.

ADR System ships an update every 7 months, RSP App every 2 months. The most recent releases landed on September 7, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | ADR System | RSP App |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 18 MB | 23 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Lucia Escobar Morales](https://appshunter.io/developer/1518635682) | [Inercial Performance Sl.](https://appshunter.io/developer/1554126019) |

## What reviewers say

### ADR System

[App page](https://appshunter.io/ios/app/adr-system/id1518635683)

Monitor and optimize strength training and jump assessments wirelessly via Bluetooth. Quickly view athlete performance data, measure key metrics like reactive strength index and estimated 1RM, and create custom load-velocity profiles. Manage multiple athletes with unlimited free storage.

**Highlights:** Wireless Bluetooth connectivity, Strength and jump performance monitoring, Reactive strength index measurement, Estimated daily 1RM calculation, Jump height and flight time tracking, Customizable load-velocity profiles, Athlete profile management

**Features:** macOS Compatibility

**In-app purchases:** none


### RSP App

[App page](https://appshunter.io/ios/app/rsp-app/id1623553151)

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

**In-app purchases:** none


## Frequently asked questions

### Is ADR System free?

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

### Is RSP App free?

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

### Do ADR System or RSP App have ads?

Neither ADR System nor RSP App shows ads.

### Which is updated more often, ADR System or RSP App?

ADR System ships an update every 7 months, and RSP App every 2 months. Most recently, ADR System was updated on September 7, 2026 and RSP App on September 26, 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.*