# Prism vs RunSplit

The clearest difference is ads: Prism at none against RunSplit's shown. RunSplit's advantage is update cadence (every 2 days vs every 11 days) and iOS requirement (18.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Prism sells 1 in-app purchase, starting at $1.99 per month and RunSplit sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Prism ships an update every 11 days, RunSplit every 2 days. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Prism | RunSplit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 days | **Every 2 days** |
| Size | 3 MB | 18 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [剑炜 陈](https://appshunter.io/developer/1868267178) | [Zeus Solomon Olivar](https://appshunter.io/developer/1820417092) |

## What reviewers say

### Prism

[App page](https://appshunter.io/ios/app/prism-sunlight-tracker/id6758259341)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prism Premium (Monthly) | $1.99 | per month |


### 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 Prism free?

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

### Is RunSplit free?

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

### Do Prism or RunSplit have ads?

RunSplit shows ads; Prism does not.

### Which is updated more often, Prism or RunSplit?

Prism ships an update every 11 days, and RunSplit every 2 days. Most recently, Prism was updated on September 24, 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.*