# Custom Running Intervals vs RunSplit

The clearest difference is ads: Custom Running Intervals at none against RunSplit's shown. Custom Running Intervals also leads on iOS requirement (16.0 vs 18.0). RunSplit's advantage is update cadence (every 2 days vs every 3 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Custom Running Intervals sells 1 one-off in-app purchase and RunSplit sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Custom Running Intervals ships an update every 3 months, RunSplit every 2 days. The most recent releases landed on August 2, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Custom Running Intervals | RunSplit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/custom-running-intervals/id1533333253/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 18 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [John Mallonee](https://appshunter.io/developer/1520115384) | [Zeus Solomon Olivar](https://appshunter.io/developer/1820417092) |

## What reviewers say

### Custom Running Intervals

[App page](https://appshunter.io/ios/app/custom-running-intervals/id1533333253)

Create custom running workouts with flexible intervals based on time or distance. Track progress, build training plans, and analyze past runs with detailed results. Your data is private and stored securely on your device or iCloud.

**Highlights:** Configurable time or distance intervals, Repeatable interval blocks, Training plan calendar, Historical run analysis, Apple Watch monitoring, iCloud synchronization, Data privacy

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Capabilities | $0.99 | one-time |


### RunSplit

[App page](https://appshunter.io/ios/app/runsplit-interval-coach/id6762451782)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gel | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| Energy Bar | $2.99 | one-time |
| Race Entry | $4.99 | one-time |


## Frequently asked questions

### Is Custom Running Intervals free?

Custom Running Intervals is free to download, with in-app purchases available.

### Is RunSplit free?

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

### Do Custom Running Intervals or RunSplit have ads?

RunSplit shows ads; Custom Running Intervals does not.

### Which is updated more often, Custom Running Intervals or RunSplit?

Custom Running Intervals ships an update every 3 months, and RunSplit every 2 days. Most recently, Custom Running Intervals was updated on August 2, 2026 and RunSplit on September 20, 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.*