# SkewTLogPro vs Cloud Topper

The clearest difference is price: SkewTLogPro at Free against Cloud Topper's $1.99. SkewTLogPro also leads on update cadence (every 2 months vs every 12 months) and ratings volume (97 vs 7). Cloud Topper's advantage is in-app purchases (none vs 1) and review sentiment (65% vs 47%). On rating, ads and device support there is nothing between them.

SkewTLogPro is free to download; Cloud Topper costs $1.99 up front. SkewTLogPro sells 1 in-app purchase, starting at $12.99 per year. Cloud Topper asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 2.7 for SkewTLogPro against 2.7 for Cloud Topper. That said, the two scores are not equally well evidenced: SkewTLogPro has 97 ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 47% of SkewTLogPro's written reviews are positive against 65% of Cloud Topper's.

SkewTLogPro ships an update every 2 months, Cloud Topper every 12 months. The most recent releases landed on September 23, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SkewTLogPro | Cloud Topper |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [2.7 (97 ratings)](https://appshunter.io/ios/app/skewtlogpro/id522720710/reviews) | **[2.7 (7 ratings)](https://appshunter.io/ios/app/cloud-topper/id563015359/reviews)** |
| Number of ratings | **97** | 7 |
| Positive reviews | 46.7% of reviews | **65.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Subscription | **Paid** |
| Size | 79 MB | 13 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chad Sandstedt](https://appshunter.io/developer/522720713) | [Crop Applications, LLC.](https://appshunter.io/developer/563015362) |

## What reviewers say

### SkewTLogPro

[App page](https://appshunter.io/ios/app/skewtlogpro/id522720710)

Access powerful skew-t log-p charts with one touch. View atmospheric data like temperature, dew point, and winds aloft at various altitudes. Supports current GPS location, airport codes, or lat/lon for detailed weather analysis.

**Highlights:** One-touch skew-t log-p chart access, View charts by GPS, airport ID, or lat/lon, Visual indication of temperature, dew point, winds aloft, Support for International Airport ICAO codes, View charts along your route, Save charts for offline use, Scroll forward/backward for past and forecast charts

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $12.99 | per year |

**What reviewers like**

- 📊 Excellent tool for flight planning and weather analysis
- ☁️ Accurate cloud top and bottom predictions
- ❄️ Helpful for identifying icing conditions and freezing levels
- 🎯 Comprehensive atmospheric information in one app
- 👨‍✈️ Essential resource for pilots and weather enthusiasts

**What reviewers complain about**

- 💰 Sudden switch to subscription model for existing paid users
- 🚫 No grandfathering or refunds for previous purchasers
- ⏸️ Extended downtime when data source became unavailable
- 📵 App becomes completely non-functional without subscription
- 💸 High annual subscription fee ($13/year) relative to competitors

**Reported bugs**

- App crashes when selecting locations
- Data timeout errors after updates
- App becomes non-functional when data source API changes
- Slow performance and lag when flipping through hourly forecasts on iPad
- Crashes when manually changing parameters on iPad

**Requested features**

- Interactive charts like rucsoundings with exact value selection
- Extended forecast range beyond 18 hours using GFS data
- Remember last input locations for route planning
- Display CAPE, LFC, EL, and adiabatic lines graphically on chart
- Show weather model being used in the app


### Cloud Topper

[App page](https://appshunter.io/ios/app/cloud-topper/id563015359)

This utility app helps pilots determine cloud height using their device's camera and sensors. It offers a modern alternative to traditional methods and corrects for Earth's curvature.

**Highlights:** Camera, gyroscope, and accelerometer integration, Calculate height above or below clouds, Earth's curvature correction, Modern alternative to traditional sight levels, Easy to use interface

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

**In-app purchases:** none


## Frequently asked questions

### Is SkewTLogPro free?

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

### Is Cloud Topper free?

Cloud Topper costs $1.99, with no in-app purchases.

### Which has better reviews, SkewTLogPro or Cloud Topper?

Cloud Topper is rated higher. SkewTLogPro averages 2.7 out of 5 from 97 ratings, while Cloud Topper averages 2.7 from 7 ratings.

### Do SkewTLogPro or Cloud Topper have ads?

Neither SkewTLogPro nor Cloud Topper shows ads.

### Which is updated more often, SkewTLogPro or Cloud Topper?

SkewTLogPro ships an update every 2 months, and Cloud Topper every 12 months. Most recently, SkewTLogPro was updated on September 23, 2026 and Cloud Topper on September 29, 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.*