# Sprinters Speed Training vs Kairos

The clearest difference is in-app purchases: Kairos at none against Sprinters Speed Training's 12. Kairos also leads on ads (none vs shown). Sprinters Speed Training's advantage is iOS requirement (15.0 vs 17). On price, update cadence and device support there is nothing between them.

Both are free to download. Sprinters Speed Training sells 12 in-app purchases, starting at $0.99 per month. Kairos asks for nothing beyond the download.

Sprinters Speed Training ships an update every 5 weeks, Kairos every 2 months. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Sprinters Speed Training | Kairos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sprinters-speed-training/id1006594013/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 110 MB | 59 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Loyal Health & Fitness, Inc.](https://appshunter.io/developer/1088263310) | [Nexiera Technologies, Ltd.](https://appshunter.io/developer/1768590316) |

## What reviewers say

### Sprinters Speed Training

[App page](https://appshunter.io/ios/app/sprinters-speed-training/id1006594013)

Enhance your sprinting performance with tailored exercise programs. Optimize starts, strides, and leg turnover for race day. Features audio guidance, instructional videos, and offline workout options.

**Highlights:** Personalized weekly workouts, Audio guidance from digital trainer, HD instructional videos, Offline workout capability, DJ-mixed coaching sessions, Multiple speed training programs

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Fitivity Premium | $1.99 | per month |
| ad Free One Month | $1.99 | per month |
| Yearly Subscription | $5.99 | per year |
| Yearly Subscription | $9.49 | per year |
| SPRINTERS SPEED MONTHLY | $9.99 | per month |
| Entire Program - Increase Sprint Speed Strength | $2.99 | one-time |
| Entire Program - Elite Sports Speed & Footwork | $2.99 | one-time |
| Entire Program - Runner Flexibility | $2.99 | one-time |
| Entire Program - Football Speed & Agility | $2.99 | one-time |
| Purchase levels of all programs | $7.99 | one-time |
| Lifetime Premium Subscription | $299.99 | one-time |


### Kairos

[App page](https://appshunter.io/ios/app/kairos-pose-analysis/id6739462169)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sprinters Speed Training free?

Sprinters Speed Training is free to download, with in-app purchases available.

### Is Kairos free?

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

### Do Sprinters Speed Training or Kairos have ads?

Sprinters Speed Training shows ads; Kairos does not.

### Which is updated more often, Sprinters Speed Training or Kairos?

Sprinters Speed Training ships an update every 5 weeks, and Kairos every 2 months. Most recently, Sprinters Speed Training was updated on November 1, 2026 and Kairos on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*