Comparison

Kailo vs Runtools Calc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kailo

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
Read full description

Go LIVE on your runs & rides with the Kailo to share your realtime location, pace, and distance stats with friends & family. Kailo helps runners train intelligently, understand their progress, and predict race performance with unprecedented accuracy. Built on cutting-edge machine learning algorithms, Kailo transforms your running data into insights you can act on. Connect your Strava or Garmin account to unlock personalized predictions and workout analysis. -- Marathon Predictions -- We look at your training runs to give you a highly accurate marathon prediction time. Whether you’re chasing your first sub-3 hour or your next personal best, Kailo shows exactly where you stand—and how to get faster. -- Beautiful Data Visualization -- See your training come alive. Kailo automatically turns your runs into dynamic, interactive charts that reveal your progress over time—pace, elevation, heart rate, and more. Every data point is visualized with clarity and purpose, so you can truly see your fitness evolve. -- Chat With Your Data -- Ever wish you could just ask your training data questions? Now you can. Use Kailo's built-in chat to explore your runs conversationally—“Show me my fastest long runs,” “Compare this week’s mileage to last month,” or “Create a chart of my tempo splits.” Your data answers instantly. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Runtools Calc

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
Read full description

RunTools Calc is a free training calculator built for runners and coaches who care about accuracy. Most running apps overcomplicate simple math. RunTools Calc focuses on what actually matters: splits, pace, and performance clarity—presented in a clean, readable format. Features • Calculate splits for any distance and total time • View pace in min/mi, min/km, mph, and km/h • Simple vertical split layout designed for quick reference • Accurate pace formatting (no broken times like 3:60) • Preset distances including Mile, 8K, 10 Mile, 15K, Half Marathon, and Marathon • VO₂ calculator with fitness-level insight • Built for athletes, coaches, and serious training Whether you’re planning workouts, checking race pace, or coaching athletes, RunTools Calc gives you the numbers you need—without noise. Train smarter. Run with precision.

Screenshots

Kailo4 screens
Runtools Calc4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard5 real differences · 5 level
Kailo versus Runtools Calc: the parameters behind the verdict, then further details
ParameterKailoRuntools Calc
PriceFreeFree
Rating4.0 (14 ratings)5.0 (5 ratings) — better
Positive reviews20.0% of reviews100.0% of reviews — better
Number of ratings14 — better5
Update frequencyEvery 6 days — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size161 MB1 MB
Age rating4+4+
DeveloperGetFast AI, Inc.Ladarius tellis

Customer experience

Kailo

All ratings14 ratings
Positive71.4%
Neutral7.1%
Negative21.4%
Written reviews5 reviews
Positive20.0%
Neutral20.0%
Negative60.0%

Runtools Calc

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Kailo

Subscriptions1
  • GetFast Pro Monthly7 Days trial$9.991 Month
None

Runtools Calc

No in-app purchases

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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