# SkewTLogPro vs ACE Checklist Editor

The clearest difference is rating: ACE Checklist Editor at 3.8 against SkewTLogPro's 2.7. ACE Checklist Editor also leads on monetization model (free with in-app purchases vs subscription) and update cadence (every 4 days vs every 2 months). SkewTLogPro's advantage is ratings volume (97 vs 4). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. SkewTLogPro sells 1 in-app purchase, starting at $12.99 per year and ACE Checklist Editor sells 10 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ACE Checklist Editor holds the better App Store score, 3.8 against 2.7. That said, the two scores are not equally well evidenced: SkewTLogPro has 97 ratings behind it against 4, 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 50% of ACE Checklist Editor's.

SkewTLogPro ships an update every 2 months, ACE Checklist Editor every 4 days. Both last shipped on October 17, 2026.

## The numbers

| Metric | SkewTLogPro | ACE Checklist Editor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (97 ratings)](https://appshunter.io/ios/app/skewtlogpro/id522720710/reviews) | **[3.8 (4 ratings)](https://appshunter.io/ios/app/ace-checklist-editor/id6748047077/reviews)** |
| Number of ratings | **97** | 4 |
| Positive reviews | 46.7% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 79 MB | 13 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chad Sandstedt](https://appshunter.io/developer/522720713) | [Patrick Michalina](https://appshunter.io/developer/1823351786) |

## 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 Checklist Editor

[App page](https://appshunter.io/ios/app/ace-checklist-editor/id6748047077)

Create, manage, and execute aviation checklists digitally. Designed for pilots, it offers offline functionality, professional templates, and multi-format import/export for enhanced safety and efficiency in the cockpit.

**Highlights:** Digital aviation checklist creation, Offline functionality, Multi-format import/export (ACE, ForeFlight, Dynon), Professional templates, Challenge & Response format, Revision history, Smart organization by aircraft or phase of flight

**Features:** Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ACE Pro Monthly | $5.99 | per month |
| ACE Pro Annual | $49.99 | per year |
| Fly Mode (Lifetime) | $4.99 | one-time |
| PDF Export (Lifetime) | $9.99 | one-time |
| Beechcraft Baron B55 (BE55) | $9.99 | one-time |
| Beechcraft Baron B58 (BE58) | $9.99 | one-time |
| Beechcraft Baron B58P (B58T) | $9.99 | one-time |
| Beechcraft Duchess (BE76) | $9.99 | one-time |
| Piper JETPROP (PA46) Checklist | $9.99 | one-time |
| ACE File Access (Lifetime) | $99.99 | one-time |


## Frequently asked questions

### Is SkewTLogPro free?

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

### Is ACE Checklist Editor free?

ACE Checklist Editor is free to download, with in-app purchases available.

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

ACE Checklist Editor is rated higher. SkewTLogPro averages 2.7 out of 5 from 97 ratings, while ACE Checklist Editor averages 3.8 from 4 ratings.

### Do SkewTLogPro or ACE Checklist Editor have ads?

Neither SkewTLogPro nor ACE Checklist Editor shows ads.

### Which is updated more often, SkewTLogPro or ACE Checklist Editor?

SkewTLogPro ships an update every 2 months, and ACE Checklist Editor every 4 days. Most recently, SkewTLogPro was updated on October 17, 2026 and ACE Checklist Editor on October 17, 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.*