# PackRat AI vs River Ruler

The clearest difference is in-app purchases: PackRat AI at none against River Ruler's 2. PackRat AI also leads on device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. River Ruler sells 2 one-off in-app purchases. PackRat AI asks for nothing beyond the download.

PackRat AI ships an update every 2 weeks, River Ruler weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PackRat AI | River Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/river-ruler-length-and-map/id6793469300/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 49 MB | 14 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Bierman](https://appshunter.io/developer/1742901425) | [Alex Pupko](https://appshunter.io/developer/1891763444) |

## What reviewers say

### PackRat AI

[App page](https://appshunter.io/ios/app/packrat-ai/id6499243187)

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

**In-app purchases:** none


### River Ruler

[App page](https://appshunter.io/ios/app/river-ruler-length-and-map/id6793469300)

Measure river lengths precisely by following the actual riverbed, not a straight line. Get detailed trip data like flow, gradient, and estimated travel times for various watercraft and on foot. Export your measurements in multiple formats for GPS devices and mapping software.

**Highlights:** Measure river length along riverbed, View river source to mouth, Find rivers by name or coordinates, Analyze sinuosity, gradient, and discharge, Estimate travel time for kayak, SUP, or walking, Export measurements as GPX, KML, or PDF, Save measurement logs

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $5.99 | one-time |
| RiverRuler lifetime | $9.99 | one-time |


## Frequently asked questions

### Is PackRat AI free?

PackRat AI is free to download, with no in-app purchases.

### Is River Ruler free?

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

### Do PackRat AI or River Ruler have ads?

Neither PackRat AI nor River Ruler shows ads.

### Which is updated more often, PackRat AI or River Ruler?

PackRat AI ships an update every 2 weeks, and River Ruler weekly. Most recently, PackRat AI was updated on October 30, 2026 and River Ruler on October 31, 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.*