Airport ID vs Sequence Decoder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Airport ID
Quickly find and identify three and four-letter airport codes (IATA, ICAO, FAA) globally. Access detailed airport information, view locations on maps, and search offline.
- Search 30,000+ airports
- Offline search functionality
- Wikipedia information lookup
- Open location in Google Maps
- Easy-to-use keypad identification
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Decode airport codes, airline codes and aircraft types. What does EDDF, LH or A20N mean? Airport ID tells you in seconds. Airport ID lets you search and identify the 3- and 4-letter IDs of airports worldwide, known as IATA, ICAO and FAA codes – and now also airline and aircraft type codes. Features: • Find more than 38,000 airports in seconds • Search works offline • Identify codes with the easy-to-use keypad • Open airport information on Wikipedia • Open the airport's location in Google Maps • New: airline codes and aircraft types Codes • Airports: IATA (FRA), ICAO (EDDF) and US FAA codes of more than 38,000 airports, airfields, heliports and railway stations in 242 countries and territories • Airlines: IATA (LH) and ICAO (DLH) codes and the radio callsign of more than 1,900 active airlines; ceased airlines on request • Aircraft types: ICAO designators (A20N, B738) and IATA type codes (32N, 738) of 2,700 types, with engine type and count Keypad • Keys that cannot lead to a known code are greyed out. • A code shared by several airports or airlines shows every match as a card. • Choose on the start screen whether airlines and aircraft types are included. List • Search by name or code, filter by country, type and code, sort by name, country or relevance. Useful for • Travellers: understand the codes on tickets, boarding passes, baggage tags and departure boards • Aviation fans: identify airports, airlines and aircraft types when spotting, on a flight tracker or on board • Aviation professionals: check flight plans, load sheets and logbooks The app shows ads; an ad-free subscription is available.
Sequence Decoder
Access real-time and historical flight data for any airport, including departures, arrivals, and individual flight details. Flight attendants receive specialized tools for managing schedules, alerts, crew communication, and legal compliance.
- Airport departure/arrival info
- Individual flight lookup
- Flight attendant alerts
- Crew scheduling tools
- Legality checker
- Crew communication
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For the public: -Past and future departure information for all airports -Past and future arrival information for all airports -Individual flight info lookup For flight attendants: -Reminders if you forgot to sign in-Flight info -ETB alerts -Open time alerts -Flight alerts -Open time display -Sequence details -Calendar -Reserve call out list -Standby list -Crew chat -Save notes about crew members -Display prior sequences flown together with others -Pilot sequence info -Legality checker -Hotel amenities and pickup locations -Find layover overlaps with other base's sequences -Tracks cosmic radiation exposure -Sequence total pay
Screenshots
Verdict
The clearest difference is rating: Sequence Decoder at 4.6 against Airport ID's 3.7. Sequence Decoder also leads on in-app purchases (none vs 1) and ads (none vs shown). On price 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. Airport ID sells 1 in-app purchase, starting at $4.99 per year. Sequence Decoder asks for nothing beyond the download.
Sequence Decoder holds the better App Store score, 4.6 against 3.7. Both are backed by a comparable volume of ratings — 63 and 241 respectively. Written reviews point the same way: 57% of Airport ID's written reviews are positive against 76% of Sequence Decoder's.
Airport ID ships an update every 8 months, Sequence Decoder every 3 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | Airport ID | Sequence Decoder |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (63 ratings) | 4.6 (241 ratings) — better |
| Positive reviews | 57.1% of reviews | 75.6% of reviews — better |
| Number of ratings | 63 | 241 — better |
| Update frequency | Every 8 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 100 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Ulrich Helker | Jeffrey REISBERG |
Customer experience
Airport ID
Sequence Decoder
Bugs and requests
Airport ID
Not enough reviews yet to summarise bugs or requests.
Sequence Decoder
Reported bugs
9 issues- Trips no longer listed in open time after update
- Cannot sync calendar
- App not loading trips or showing standbys
- Open time and call out list not working
- Jeffnet not loading data
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- App not working after recent use
- Locked out of app, cannot log in
- No way to stop payments
- Getting error messages on everything
Requested features
2 requests- Enable Face ID login when importing via browser
- Bring back hotel info
In-app purchases
Airport ID
- Remove ad banner$4.991 Year
Sequence Decoder
No in-app purchases
Questions
Is Airport ID free?
Is Sequence Decoder free?
Which has better reviews, Airport ID or Sequence Decoder?
Do Airport ID or Sequence Decoder have ads?
Which is updated more often, Airport ID or Sequence Decoder?
Other comparisons
