# QuickColdAlt vs RosterSync

The clearest difference is in-app purchases: QuickColdAlt at none against RosterSync's 1. QuickColdAlt also leads on ads (none vs shown) and review sentiment (100% vs 80%). RosterSync's advantage is update cadence (every 3 days vs every 11 days) and ratings volume (3 vs 1). On price, rating and device support there is nothing between them.

Both are free to download. RosterSync sells 1 one-off in-app purchase. QuickColdAlt asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for QuickColdAlt against 5.0 for RosterSync. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 100% of QuickColdAlt's written reviews are positive against 80% of RosterSync's.

QuickColdAlt ships an update every 11 days, RosterSync every 3 days. The most recent releases landed on September 23, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | QuickColdAlt | RosterSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/quickcoldalt/id6739363484/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/rostersync/id6759645143/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 days | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 40 MB | 62 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [SEUNGSOO YOU](https://appshunter.io/developer/1785034668) | [AeroSync Studio](https://appshunter.io/developer/1888070954) |

## What reviewers say

### QuickColdAlt

[App page](https://appshunter.io/ios/app/quickcoldalt/id6739363484)

This utility calculates temperature and altitude corrections for flight operations. It offers a user-friendly interface for quick and reliable results, with a dark mode ideal for night flying. The app is completely free and ad-free.

**Highlights:** Temperature and altitude correction calculation, User-friendly interface, Fast results (under 10 seconds), Clear and reliable display, Dark mode for night flights, Completely free and ad-free

**Features:** macOS Compatibility

**In-app purchases:** none


### RosterSync

[App page](https://appshunter.io/ios/app/rostersync/id6759645143)

Manage and share your flight schedules with airline crew. This utility automatically syncs your roster, offers robust security for login credentials, and allows real-time schedule comparison with colleagues. Export your schedule to your native calendar for seamless organization.

**Highlights:** Automated schedule sync, Secure credential storage, Real-time schedule sharing, Cross-comparison with colleagues, Calendar export (iCloud/Google), Privacy permission settings

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro 버전 업그레이드 | $2.99 | one-time |


## Frequently asked questions

### Is QuickColdAlt free?

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

### Is RosterSync free?

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

### Which has better reviews, QuickColdAlt or RosterSync?

QuickColdAlt and RosterSync are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do QuickColdAlt or RosterSync have ads?

RosterSync shows ads; QuickColdAlt does not.

### Which is updated more often, QuickColdAlt or RosterSync?

QuickColdAlt ships an update every 11 days, and RosterSync every 3 days. Most recently, QuickColdAlt was updated on September 23, 2026 and RosterSync on October 12, 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.*