# CardioSimple vs Pace Lab

The clearest difference is ads: CardioSimple at none against Pace Lab's shown. CardioSimple also leads on device support (4 vs 2). On price, update cadence, in-app purchases and iOS requirement there is nothing between them.

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

CardioSimple ships an update every 9 days, Pace Lab weekly. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | CardioSimple | Pace Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cardiosimple/id6748622467/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Weekly** |
| Monetization | Free | — |
| Size | 71 MB | 31 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Seamless Care LLC](https://appshunter.io/developer/1726763757) | [Pyoungoh Yun](https://appshunter.io/developer/1877024185) |

## What reviewers say

### CardioSimple

[App page](https://appshunter.io/ios/app/cardiosimple/id6748622467)

This app offers AI-driven cardiac rehabilitation exercises and coaching at home. It personalizes your experience through surveys, tracks vitals and medications, and provides AI-graded nutrition logging. Guided workouts focus on heart rate targets to support your recovery.

**Highlights:** AI-driven exercise coaching, Personalized rehab plans, Nutrition logging and AI-grading, Medication tracking, Vitals monitoring, Heart rate target guided workouts, Progress charts

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

**In-app purchases:** none


### Pace Lab

[App page](https://appshunter.io/ios/app/pace-lab-running-calculator/id6759136568)

**In-app purchases:** none


## Frequently asked questions

### Is CardioSimple free?

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

### Is Pace Lab free?

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

### Do CardioSimple or Pace Lab have ads?

Pace Lab shows ads; CardioSimple does not.

### Which is updated more often, CardioSimple or Pace Lab?

CardioSimple ships an update every 9 days, and Pace Lab weekly. Most recently, CardioSimple was updated on October 7, 2026 and Pace Lab on October 18, 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.*