# WinopsECB vs simREF

The clearest difference is in-app purchases: WinopsECB at none against simREF's 2. simREF's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. simREF sells 2 one-off in-app purchases. WinopsECB asks for nothing beyond the download.

WinopsECB ships an update every 3 months, simREF every 2 weeks. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | WinopsECB | simREF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/simref/id6753267206/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 119 MB | 148 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 17+ |
| Developer | [cbl Electronics AG](https://appshunter.io/developer/1319501251) | [Chris-Luca Fischer](https://appshunter.io/developer/1843257076) |

## What reviewers say

### WinopsECB

[App page](https://appshunter.io/ios/app/winopsecb/id6740320745)

**Features:** macOS Compatibility

**In-app purchases:** none


### simREF

[App page](https://appshunter.io/ios/app/simref/id6753267206)

This app provides quick-reference checklists and operational data for flight simulation on iPad. It features interactive normal and abnormal checklists, essential flight data, and a CG/Trim calculator for takeoff planning in a distraction-free, dark UI optimized for cockpit environments.

**Highlights:** Interactive Normal & Abnormal Checklists, Operational Data at a glance, CG/Trim calculator, Offline functionality, Dark UI for cockpit environments, iPad landscape optimized

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IndiGo Virtual Integration | $2.99 | one-time |
| simREF Full Access | $8.99 | one-time |


## Frequently asked questions

### Is WinopsECB free?

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

### Is simREF free?

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

### Do WinopsECB or simREF have ads?

Neither WinopsECB nor simREF shows ads.

### Which is updated more often, WinopsECB or simREF?

WinopsECB ships an update every 3 months, and simREF every 2 weeks. Most recently, WinopsECB was updated on October 2, 2026 and simREF on October 11, 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.*