Comparison

SubStandard vs RosterSync

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Cold temperature corrections
  • Altitude set storage
  • Quick access to saved altitudes
  • Easy to use interface
Features
Read full description

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.

About

RosterSync

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
Read full description

A New Standard for Your Flight Life, RosterSync! RosterSync is a smart utility designed for busy airline crew members to easily manage and securely share their complex flight rosters. With a sleek deep-sea theme and robust security features, we make your aviation life more comfortable and organized. [Key Features] 1. Smart Automated Schedule Sync Log in just once to your airline portal, and RosterSync will automatically parse your complex flight schedule and display it beautifully on the in-app calendar. Easily check your layovers, off days, and flight numbers at a glance. 2. Ironclad Security with Apple Keychain Your valuable airline portal login credentials (Employee ID and Password) are securely encrypted and stored ONLY within your iPhone's native 'Keychain'. They are NEVER transmitted to any external server, ensuring your absolute privacy. 3. Real-Time Schedule Sharing & Comparison Add colleagues via social login (Apple, Google) and cross-compare your schedules in real-time. Instantly see "who is flying where" and maintain your privacy with detailed search permission settings (e.g., Public, Same Airline Only, Private). 4. Calendar Export (iCloud & Google) Seamlessly export your RosterSync schedule to your native iOS Calendar or Google Calendar. For iCloud accounts, the app can automatically create a dedicated orange 'RosterSync' calendar to keep things perfectly organized! Start a smarter, more enjoyable flight life with RosterSync today!

Screenshots

SubStandard4 screens
RosterSync3 screens

Verdict

The call

SubStandard and RosterSync both sit at 5.0 stars, but that hides the real split: 80% of RosterSync's written reviews are positive against 0% of SubStandard's. RosterSync also leads on update cadence (every 3 days vs every 7 months). SubStandard's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SubStandard against 5.0 for RosterSync. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews are what separate them: 0% of SubStandard's written reviews are positive against 80% of RosterSync's.

UpkeepUpdate frequency

SubStandard ships an update every 7 months, RosterSync every 3 days. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

Scorecard6 real differences · 4 level
SubStandard versus RosterSync: the parameters behind the verdict, then further details
ParameterSubStandardRosterSync
PriceFreeFree
Rating5.0 (2 ratings)5.0 (3 ratings)
Positive reviews0.0% of reviews80.0% of reviews — better
Number of ratings23 — better
Update frequencyEvery 7 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS12.0 — better18.0
Further details — not scored
Size33 MB62 MB
Age rating4+4+
DeveloperiService Ottner RöckAeroSync Studio

Customer experience

SubStandard

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

RosterSync

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

SubStandard

No in-app purchases

1 purchases

RosterSync

One-time1
  • Pro 버전 업그레이드$2.99

Questions

Is SubStandard free?
SubStandard 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, SubStandard or RosterSync?
SubStandard and RosterSync are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.
Do SubStandard or RosterSync have ads?
RosterSync shows ads; SubStandard does not.
Which is updated more often, SubStandard or RosterSync?
SubStandard ships an update every 7 months, and RosterSync every 3 days. Most recently, SubStandard was updated on October 6, 2026 and RosterSync on October 12, 2026.

Other comparisons