# CalcuRun vs Watchletic

The clearest difference is rating: CalcuRun at 5.0 against Watchletic's 4.3. CalcuRun also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). Watchletic's advantage is update cadence (every 2 weeks vs every 4 weeks) and ratings volume (29 vs 6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. CalcuRun sells 5 one-off in-app purchases and Watchletic sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

CalcuRun holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 6 and 29 respectively.

CalcuRun ships an update every 4 weeks, Watchletic every 2 weeks. The most recent releases landed on September 9, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | CalcuRun | Watchletic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/calcurun/id1554474187/reviews)** | [4.3 (29 ratings)](https://appshunter.io/ios/app/watchletic-run-tracker/id1606429298/reviews) |
| Number of ratings | 6 | **29** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 92 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Iannazzone](https://appshunter.io/developer/1554474189) | [Hesselbom Tech AB](https://appshunter.io/developer/1119655397) |

## What reviewers say

### CalcuRun

[App page](https://appshunter.io/ios/app/calcurun/id1554474187)

This app helps runners predict race times, plan training paces, and calculate race splits. It offers a science-based approach to training, with predictions based on recent performance. All calculations are done on-device for privacy.

**Highlights:** Predict race times based on recent performance, Plan workout paces, Calculate race splits, Support for custom race distances, iCloud sync across devices, On-device calculations for privacy

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Mile | $0.99 | one-time |
| 5K | $1.99 | one-time |
| Turkey Trot | $3.99 | one-time |
| Half Marathon | $5.99 | one-time |
| Marathon | $9.99 | one-time |


### Watchletic

[App page](https://appshunter.io/ios/app/watchletic-run-tracker/id1606429298)

This app provides structured interval workouts directly to your Apple Watch, helping serious runners stay focused on their training. It syncs with popular training platforms and offers advanced pacing tools with audio and haptic alerts to keep you on track.

**Highlights:** Direct training plan integration, Workouts on Apple Watch, Audio and haptic alerts, Advanced pacing tools, Apple Health sync, Export to Strava, GPX, TCX, FIT

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $39.99 | per year |


## Frequently asked questions

### Is CalcuRun free?

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

### Is Watchletic free?

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

### Which has better reviews, CalcuRun or Watchletic?

CalcuRun is rated higher. CalcuRun averages 5.0 out of 5 from 6 ratings, while Watchletic averages 4.3 from 29 ratings.

### Do CalcuRun or Watchletic have ads?

Watchletic shows ads; CalcuRun does not.

### Which is updated more often, CalcuRun or Watchletic?

CalcuRun ships an update every 4 weeks, and Watchletic every 2 weeks. Most recently, CalcuRun was updated on September 9, 2026 and Watchletic on September 24, 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.*