SubStandard vs Roster Helper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SubStandard
This aviation utility app simplifies applying cold temperature corrections for altitudes. It allows users to save frequently used altitude sets for rapid retrieval, enhancing efficiency in flight planning.
- Cold temperature corrections
- Altitude set storage
- Quick access to saved altitudes
- Easy to use interface
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SubStandard is an easy to use app to apply cold temperature corrections in aviation. Moreover, it lets you store sets of altitudes for quick access later on.
Roster Helper
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Roster Helper is a roster companion for airline crew. Import your schedule from your airline's crew portal and see flights, standby, training, days off, positioning and layovers in clear month and timeline views. Open any duty for report times, block time, crew, aircraft and flight details. Export to AeroWeather, LogTen Pro, PILOTLOG and more. Supported airlines: - GetJet Airlines - RAIDO - Heston Airlines - RAIDO - Wizz Air - AIMS eCrew (roster import and history) - SKY express - AIMS eCrew (roster import and history) - FlyOne - crewconnex - More airlines coming soon - if your airline gives you a crew portal, write to us and we will add it Pro adds: - Statistics and Friends - Crew tools and roster sharing - GetJet Swaps: offer duties, review matching offers and prepare Crew Control requests - Subscribable calendars and logbook exports - Weather, trip and hotel information - Revision history Widgets and the Apple Watch app keep your next duty close at hand. Roster data is encrypted on your device. Signing in uses the crew portal account issued by your airline; Roster Helper is an independent app, not endorsed by, operated by any airline. Pro includes a 14-day free trial. Subscriptions renew automatically and can be managed in your App Store account. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rosterhelper.app/privacy/
Screenshots
Verdict
The clearest difference is update cadence: Roster Helper at every 5 days against SubStandard's every 7 months. SubStandard's advantage is iOS requirement (12.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SubStandard ships an update every 7 months, Roster Helper every 5 days. The most recent releases landed on October 20, 2026 and October 13, 2026 respectively.
| Parameter | SubStandard | Roster Helper |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 12.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 33 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | iService Ottner Röck | Arthur Weingart |
In-app purchases
SubStandard
No in-app purchases
Roster Helper
No in-app purchases
