# SkewTLogPro vs ACE

The clearest difference is rating: ACE at 5.0 against SkewTLogPro's 2.7. ACE also leads on in-app purchases (none vs 1) and review sentiment (80% vs 47%). SkewTLogPro's advantage is ratings volume (97 vs 5). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SkewTLogPro sells 1 in-app purchase, starting at $12.99 per year. ACE asks for nothing beyond the download.

ACE holds the better App Store score, 5.0 against 2.7. That said, the two scores are not equally well evidenced: SkewTLogPro has 97 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 47% of SkewTLogPro's written reviews are positive against 80% of ACE's.

## The numbers

| Metric | SkewTLogPro | ACE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (97 ratings)](https://appshunter.io/ios/app/skewtlogpro/id522720710/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ace-editor/id6469464234/reviews)** |
| Number of ratings | **97** | 5 |
| Positive reviews | 46.7% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Subscription | **Free** |
| Size | 79 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Chad Sandstedt](https://appshunter.io/developer/522720713) | [Post River Software](https://appshunter.io/developer/325439356) |

## 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


### ACE

[App page](https://appshunter.io/ios/app/ace-editor/id6469464234)

This application allows users to create and manage checklists for Garmin avionics. It specifically supports the ACE checklist file format, making it ideal for pilots using systems like the G3X Touch.

**Highlights:** Checklist editor, ACE checklist file format support, Garmin avionics integration, G3X Touch compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SkewTLogPro free?

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

### Is ACE free?

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

### Which has better reviews, SkewTLogPro or ACE?

ACE is rated higher. SkewTLogPro averages 2.7 out of 5 from 97 ratings, while ACE averages 5.0 from 5 ratings.

### Do SkewTLogPro or ACE have ads?

Neither SkewTLogPro nor ACE shows ads.

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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.*