# Wind Reader vs Erg

The clearest difference is review sentiment: Erg at 100% against Wind Reader's 0%. Erg also leads on rating (5.0 vs 4.0). Wind Reader's advantage is update cadence (weekly vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Erg holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews point the same way: 0% of Wind Reader's written reviews are positive against 100% of Erg's.

Wind Reader ships an update weekly, Erg every 2 months. The most recent releases landed on September 23, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Wind Reader | Erg |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/wind-reader/id6469385660/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/erg-connect/id6741701740/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free | Free |
| Size | 2 MB | 44 MB |
| Requires iOS | 15.0 | **14.0.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [James Eagleman](https://appshunter.io/developer/1464839727) | [Coding Minds, Inc.](https://appshunter.io/developer/1480612283) |

## What reviewers say

### Wind Reader

[App page](https://appshunter.io/ios/app/wind-reader/id6469385660)

This application calculates real-time wind speed for long-range shooting using the Eagleman Technique. It leverages your phone's inclination sensor to convert mirage and rain angles into accurate wind speed measurements, a method patented in the US.

**Highlights:** Real-time wind speed calculation, Eagleman Technique implementation, Uses phone inclination sensor, Converts mirage and rain angles, Patented wind reading method

**Features:** macOS Compatibility

**In-app purchases:** none


### Erg

[App page](https://appshunter.io/ios/app/erg-connect/id6741701740)

Enhance your rowing technique with AI-powered video analysis and track your progress. Compete on leaderboards, connect with teammates through group chat, and build a strong rowing community. Train smarter and improve faster with this comprehensive platform.

**Highlights:** AI-powered rowing analysis, Leaderboard rankings, Group chat and community, Create and join groups, Workout history and progress tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wind Reader free?

Wind Reader is free to download, with no in-app purchases.

### Is Erg free?

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

### Which has better reviews, Wind Reader or Erg?

Erg is rated higher. Wind Reader averages 4.0 out of 5 from 5 ratings, while Erg averages 5.0 from 2 ratings.

### Do Wind Reader or Erg have ads?

Neither Wind Reader nor Erg shows ads.

### Which is updated more often, Wind Reader or Erg?

Wind Reader ships an update weekly, and Erg every 2 months. Most recently, Wind Reader was updated on September 23, 2026 and Erg on October 2, 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.*