# Rivalists vs Stack Up

The clearest difference is update cadence: Rivalists at fortnightly against Stack Up's every 4 months. 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.

Rivalists ships an update fortnightly, Stack Up every 4 months. The most recent releases landed on October 10, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Rivalists | Stack Up |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/rivalists/id1638560877/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free | — |
| Size | 82 MB | 39 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Athleticus Inc](https://appshunter.io/developer/1638560879) | [David Chabot](https://appshunter.io/developer/1827519391) |

## What reviewers say

### Rivalists

[App page](https://appshunter.io/ios/app/rivalists/id1638560877)

This app helps athletes and active individuals optimize their health and performance by syncing data from wearables and health apps. It facilitates real-time connection with physical therapists, coaches, or trainers for personalized care and progress monitoring.

**Highlights:** Sync health data from 100+ sources, Message with PT, Coach, or Trainer, Access assigned workouts, Track activity, sleep, and recovery, Share key metrics securely with providers

**In-app purchases:** none


### Stack Up

[App page](https://appshunter.io/ios/app/stack-up-fitness-tracker/id6756453177)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rivalists free?

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

### Is Stack Up free?

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

### Do Rivalists or Stack Up have ads?

Neither Rivalists nor Stack Up shows ads.

### Which is updated more often, Rivalists or Stack Up?

Rivalists ships an update fortnightly, and Stack Up every 4 months. Most recently, Rivalists was updated on October 10, 2026 and Stack Up on October 19, 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.*