Congress vs Railmap for Open Railway Map
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Congress
Navigate the 39th Chaos Communication Congress with this app. It offers a detailed schedule, session filtering, offline access, and live streaming capabilities. Stay organized with reminders and collaborate on session lists.
- Session schedule overview
- Filter by language, room, track, skill
- Offline data access
- Live stream and video playback
- Downloadable videos
- Session reminders and alerts
- Collaborative session lists
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Your guide to the 39th Chaos Communication Congress from 27th to 30th December in the Congress Center Hamburg. Features: - In Englisch and German - For iPad and iPhone - Calendar or list style overview of all sessions - Filter sessions by language, room, track or skill level - Offline data: Find what you are looking for even if the WiFi is down - Watch live streams and video recordings right from inside the app - Download videos for offline watching - Favorites - Collaborate on lists of sessions - Reminders: Never miss a session - iCloud sync for favorites, list and reminders - Search for sessions and speakers - Get alerts when your favourite sessions get rescheduled or cancelled - Keyboard support for iPad - Support for Shortcuts - Also check out the tvOS and macOS App More info about the event at https://events.ccc.de/
Railmap for Open Railway Map
Discover the world through the lens of train tracks. Explore global rail networks, understand speed limits on different lines, and view detailed information about railway signals. The app caches visited locations for faster loading.
- Explore global train tracks
- View speed limits on tracks
- Detailed signal information
- Multiple map layers
- Offline caching of locations
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Railmap allows you to explore the world with a whole new sight: the world of train tracks. Explore three different rail map layers: STANDARD Explore the global network of train tracks. SPEED Get a feeling about how fast you can go on which train tracks. SIGNALS See detailed information about signs and signals on train tracks. Railmaps also caches places you've seen on your device so they'll load even faster if you want to see the again.
Screenshots
Verdict
The clearest difference is price: Congress at Free against Railmap for Open Railway Map's $2.99. Congress also leads on ads (none vs shown) and review sentiment (100% vs 67%). Railmap for Open Railway Map's advantage is ratings volume (728 vs 30) and iOS requirement (15.0 vs 26.0). On rating and in-app purchases 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
Congress is free to download; Railmap for Open Railway Map costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.8 for Congress against 4.7 for Railmap for Open Railway Map. That said, the two scores are not equally well evidenced: Railmap for Open Railway Map has 728 ratings behind it against 30, so its average is the more settled of the two. Written reviews are what separate them: 100% of Congress's written reviews are positive against 67% of Railmap for Open Railway Map's.
Congress ships an update every 9 days, Railmap for Open Railway Map monthly. The most recent releases landed on November 6, 2026 and November 12, 2026 respectively.
| Parameter | Congress | Railmap for Open Railway Map |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.8 (30 ratings) — better | 4.7 (728 ratings) |
| Positive reviews | 100.0% of reviews — better | 67.4% of reviews |
| Number of ratings | 30 | 728 — better |
| Update frequency | Every 9 days — better | Monthly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, Mac, Apple TV, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Kollbach | Florian Chrometz |
Customer experience
Congress
Railmap for Open Railway Map
Bugs and requests
Congress
Not enough reviews yet to summarise bugs or requests.
Railmap for Open Railway Map
Reported bugs
10 issues- Map stops loading after several minutes of use
- Tracks disappear when zooming in beyond certain level
- Signals overlay not displaying correctly
- App freezes during zoom operations
- Location services not updating properly
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- Clipboard access without user permission
- Performance degradation after recent updates
- Inconsistent rendering of rail lines
- App crashes on certain devices/iOS versions
- Map loading issues with poor data connection
Requested features
20 requests- Search functionality for locations and stations
- Legend/key explaining map symbols and colors
- iPad optimization
- German language support
- Train tracking capability
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- Navigation/routing features
- Offline map data download
- Map rotation capability
- Ability to toggle overlays independently
- Searchable signal and switch IDs
- Coordinate copying feature
- User-contributed data updates (closures, construction)
- Speed limit information
- Railway operator color coding
- Train frequency indicators
- Links to timetables and ticket purchase
- Measurement tools (distance between points)
- Customizable measurement units (metric/imperial)
- Bookmarking/saving locations
- Improved map detail and clarity
In-app purchases
Congress
No in-app purchases
Railmap for Open Railway Map
No in-app purchases
Questions
Is Congress free?
Is Railmap for Open Railway Map free?
Which has better reviews, Congress or Railmap for Open Railway Map?
Do Congress or Railmap for Open Railway Map have ads?
Which is updated more often, Congress or Railmap for Open Railway Map?
Other comparisons
