# Kailo vs Runtools Calc

The clearest difference is review sentiment: Runtools Calc at 100% against Kailo's 20%. Runtools Calc also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 1). Kailo's advantage is update cadence (every 6 days vs fortnightly). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Kailo sells 1 in-app purchase, starting at $9.99 per month. Runtools Calc asks for nothing beyond the download.

Runtools Calc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 14 and 5 respectively. Written reviews point the same way: 20% of Kailo's written reviews are positive against 100% of Runtools Calc's.

Kailo ships an update every 6 days, Runtools Calc fortnightly. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Kailo | Runtools Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (14 ratings)](https://appshunter.io/ios/app/kailo-running-plus-data/id6752672094/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/runtools-calc/id6758685205/reviews)** |
| Number of ratings | **14** | 5 |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Freemium | **Free** |
| Size | 161 MB | 1 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GetFast AI, Inc.](https://appshunter.io/developer/1840503243) | [Ladarius tellis](https://appshunter.io/developer/1871800577) |

## What reviewers say

### Kailo

[App page](https://appshunter.io/ios/app/kailo-running-plus-data/id6752672094)

Share your real-time running and cycling stats with loved ones. This app uses machine learning to analyze your training data, offering personalized race predictions and insights into your progress through interactive charts and conversational data exploration.

**Highlights:** Live location, pace, and distance sharing, AI-powered marathon time predictions, Interactive data visualization charts, Conversational data exploration via chat, Strava and Garmin account integration, Personalized workout analysis

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GetFast Pro Monthly | $9.99 | per month |


### Runtools Calc

[App page](https://appshunter.io/ios/app/runtools-calc/id6758685205)

This app simplifies running calculations for athletes and coaches. It accurately computes splits, pace, and performance metrics in a clear format, offering VO₂ max calculations and preset race distances. Train smarter with precise data without unnecessary complexity.

**Highlights:** Calculate splits for any distance and total time, View pace in multiple units (min/mi, min/km, mph, km/h), Accurate pace formatting, Preset distances for common races, VO₂ calculator with fitness insight, Clean, readable layout for quick reference

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kailo free?

Kailo is free to download, with in-app purchases available.

### Is Runtools Calc free?

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

### Which has better reviews, Kailo or Runtools Calc?

Runtools Calc is rated higher. Kailo averages 4.0 out of 5 from 14 ratings, while Runtools Calc averages 5.0 from 5 ratings.

### Do Kailo or Runtools Calc have ads?

Neither Kailo nor Runtools Calc shows ads.

### Which is updated more often, Kailo or Runtools Calc?

Kailo ships an update every 6 days, and Runtools Calc fortnightly. Most recently, Kailo was updated on November 8, 2026 and Runtools Calc on October 31, 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.*