# CalcuRun vs ExerNation

CalcuRun and ExerNation are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. CalcuRun sells 5 one-off in-app purchases and ExerNation sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

CalcuRun ships an update every 4 weeks, ExerNation every 2 weeks. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | CalcuRun | ExerNation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/calcurun/id1554474187/reviews)** | — |
| Number of ratings | **6** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 2 MB | 1 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Iannazzone](https://appshunter.io/developer/1554474189) | [FastBri](https://appshunter.io/developer/324121856) |

## 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 |


### ExerNation

[App page](https://appshunter.io/ios/app/exernation/id6473595912)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Length Workouts! | $9.99 | per month |
| Unlimited Length (One-Time) | $99.99 | one-time |


## Frequently asked questions

### Is CalcuRun free?

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

### Is ExerNation free?

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

### Do CalcuRun or ExerNation have ads?

Neither CalcuRun nor ExerNation shows ads.

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

CalcuRun ships an update every 4 weeks, and ExerNation every 2 weeks. Most recently, CalcuRun was updated on September 9, 2026 and ExerNation on September 13, 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.*