# Groups.io App vs TrainTracker App

The clearest difference is review sentiment: TrainTracker App at 80% against Groups.io App's 36%. TrainTracker App also leads on rating (4.8 vs 3.0) and update cadence (every 3 days vs every 15 months). Groups.io App's advantage is ads (none vs shown) and iOS requirement (15.0 vs 17.6). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TrainTracker App holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 26 and 15 respectively. Written reviews point the same way: 36% of Groups.io App's written reviews are positive against 80% of TrainTracker App's.

Groups.io App ships an update every 15 months, TrainTracker App every 3 days. The most recent releases landed on September 28, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Groups.io App | TrainTracker App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (26 ratings)](https://appshunter.io/ios/app/groupsio-app/id1553820507/reviews) | **[4.8 (15 ratings)](https://appshunter.io/ios/app/traintracker-app/id6766416455/reviews)** |
| Number of ratings | **26** | 15 |
| Positive reviews | 36.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 3 days** |
| Monetization | Free | Free |
| Size | 29 MB | 39 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Groups.io, Inc](https://appshunter.io/developer/1482415932) | [SAMUEL NICHOLAS HAJEK](https://appshunter.io/developer/1859813802) |

## What reviewers say

### Groups.io App

[App page](https://appshunter.io/ios/app/groupsio-app/id1553820507)

This app provides a modern platform for online communities with powerful management tools. It offers advanced features like hashtag organization, topic muting, and integrations with other services. Users can find, join, and manage groups, receiving real-time notifications.

**Highlights:** Advanced group management, Hashtag archive organization, Mute individual topics, Real-time push notifications, Integrated Chat, Calendar, Polls, Integrations with RSS, Trello, Github, Member synchronization with Slack

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### TrainTracker App

[App page](https://appshunter.io/ios/app/traintracker-app/id6766416455)

Log and explore real-time train sightings across North America. Share your discoveries, view what others have spotted, and track your sighting history with badges. Features an interactive map and community feed for railfans.

**Highlights:** Log train sightings with photos and GPS, Interactive map with railroad-colored pins, Community sighting feed, User profiles with badges, Searchable railroad picker, Dark mode support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Groups.io App free?

Groups.io App is free to download, with no in-app purchases.

### Is TrainTracker App free?

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

### Which has better reviews, Groups.io App or TrainTracker App?

TrainTracker App is rated higher. Groups.io App averages 3.0 out of 5 from 26 ratings, while TrainTracker App averages 4.8 from 15 ratings.

### Do Groups.io App or TrainTracker App have ads?

TrainTracker App shows ads; Groups.io App does not.

### Which is updated more often, Groups.io App or TrainTracker App?

Groups.io App ships an update every 15 months, and TrainTracker App every 3 days. Most recently, Groups.io App was updated on September 28, 2026 and TrainTracker App on September 21, 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.*