# Grand River Transit (GRT) Flex — In Waterloo Region

> On-demand public transit booking and tracking for Waterloo Region. (iPhone/iPad app by Spare Labs Inc..)

- Source: https://appshunter.io/ios/app/grand-river-transit-grt-flex/id1621983895 (this page in markdown: same URL + `.md`)
- Developer: [Spare Labs Inc.](https://appshunter.io/developer/1073027185)
- Category: Travel, Navigation
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 56 MB
- Languages: American English, Amharic, Armenian, Danish, French (France), German (Germany), Hindi, Hmong, Japanese, Korean and 7 more
- Released: 2022-06-10
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/grand-river-transit-grt-flex/id1621983895/reviews.md

## What is Grand River Transit (GRT) Flex?

GRT Flex is a public transit option in the Region of Waterloo. It provides on-demand transit, has no fixed route, uses smaller vehicles and customers book their ride in advance. 
Using this app, you can book your ride, pay your fare and track your trip.

## Key features

- On-demand transit booking
- No fixed routes
- Advance ride booking
- Fare payment
- Trip tracking

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/grand-river-transit-grt-flex/id1621983895/reviews.md

### 1/5 — Useless

*2025-04-05, version 3.31.7*

Just sends you to google maps. Doesnt provide any info on, eg how to get tot he airport

### 2/5 — Please improve your development team

*2024-09-18, version 3.27.9*

PLEASE!

### 1/5 — bus driver just abandoned me

*2024-08-16, version 3.25.6*

what’s the point of a stop at central station when the bus driver doesn’t go there and just skips over me?

the app directs me to the wrong side of the road

### 1/5 — Horrible app

*2023-12-08, version 3.18.44*

The timing of the bus arrivals are way off, it will leave in 5 minutes and the bus doesn’t show up for another 20

### 2/5 — Just stopped working

*2023-08-23, version 3.13.34*

It’s just stopped working out of nowhere. It doesn’t give me bus routes. No matter what location I put. It had worked for weeks without any issue. I have tried reinstalling it but no help there. 
I am genuinely upset, because this app was rlly a life saver:(

### 4/5 — Amazing service, questionable app

*2023-01-09, version 3.7.22*

First off, I’d like to preface by saying that the GRT Flex service is amazing and incredibly useful on the physical side of things. It’s saved me many 50+ minute walks to and from the Breslau neighbourhood where I live and the Victoria/Lackner bus stop, the bus is well kept and the drivers are all incredibly nice and great drivers.

However, while the service itself is awesome, there are a few issues(okay, one BIG issue) that could be improved on the application side of things. The UI can feel convoluted at times when trying to access information, you often have to excessively fiddle with times and between leave at/arrive at to get a schedule that actually functions for what you need as it will arbitrarily assign you strange times despite the time that you need actually being perfectly accessible, and the application itself occasionally just randomly becomes clunky to use in general(although that may be my extremely old phone and terribly slow data’s fault).

Now, none of the above issues are terrible, and can be easily overlooked. However, the one huge issue I have consistently run into and occasionally been screwed over is schedule changes. More specifically, the applications failure to notify the user of them occurring. I understand that this is a FLEX service, and that the schedule changing due to other bookings is unavoidable and part of the service. However, the application does not really support this aspect of the service, as whenever the schedule changes, the app DOES NOT GIVE THE USER ANY NOTIFCATION. Far too often have I found myself rushing out the door to catch the bus arriving 10 minutes early because someone booked it 30 minutes prior, taking precedence over what I booked over a day ago. On the same coin, I also find myself often anxiously waiting 15 minutes past my scheduled time at my stop for similar reasons. I’ve even missed the bus entirely a couple times because of how drastically early the schedule changes to, making me miss over an hour of my packed university classes. All this due to the app not giving notifications as to schedule changes.

Again, I love the actual service, and I accept that schedule changes are an integral part of a flexible transit system. It’s just that the actual application doesn’t really seem to support how flexible the service is. With all that in mind, if any people at GRT read this, PLEASE add notifications that signal schedule changes. It would elevate such an already great service to something truly amazing and profoundly useful.

## Frequently asked questions about Grand River Transit (GRT) Flex

### How do I book a ride with GRT Flex?

You can book your ride in advance directly through the GRT Flex app. The app allows you to schedule your trip before you need it, ensuring availability.

### Does GRT Flex have fixed routes?

No, GRT Flex operates without fixed routes. It provides on-demand transit using smaller vehicles, offering a more flexible travel experience.

### Can I pay my fare within the GRT Flex app?

Yes, the GRT Flex app allows you to pay your fare directly within the application. This streamlines the boarding process.

### What devices is GRT Flex available on?

GRT Flex is available for iPhone and iPod devices. It is designed for mobile use on these platforms.

### How often is GRT Flex updated?

The latest version of GRT Flex is 4.4.1, last updated on March 18, 2026. Updates are released to improve functionality and user experience.

### What is the age rating for GRT Flex?

GRT Flex has an age rating of 4+. This indicates it is suitable for users of all ages.

### Does GRT Flex have ads?

No, GRT Flex does not contain advertisements. The app is free to use without any ad interruptions.

### What is the developer of GRT Flex?

GRT Flex is developed by Spare Labs Inc. They are responsible for the creation and maintenance of the application.

## Version history (last 5 releases)

### 4.6.1 — 2026-08-20

This release brings various new features, improvements and bug fixes

### 4.5.1 — 2026-07-16

This release brings various new features, improvements and bug fixes

### 4.4.1 — 2026-03-18

This release brings various new features, improvements and bug fixes

### 4.3.29 — 2026-01-07

This release brings various new features, improvements and bug fixes

### 4.2.67 — 2025-10-03

This release brings various new features, improvements and bug fixes

## Apps similar to Grand River Transit (GRT) Flex

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PRESTO](https://appshunter.io/ios/app/presto/id1437927882) | 4.7 (888) | Free | Travel |
| [Guelph Transit On-demand](https://appshunter.io/ios/app/guelph-transit-on-demand/id1465338470) | — | Free | Travel |
| [Blaise Transit](https://appshunter.io/ios/app/blaise-transit/id1502727307) | 3.3 (3) | Free | Travel |
| [Carpooll.com: Smart Rideshare](https://appshunter.io/ios/app/carpoollcom-smart-rideshare/id6480311009) | 5.0 (8) | Free | Travel |
| [City Cabs Kitchener](https://appshunter.io/ios/app/city-cabs-kitchener/id1001134880) | 5.0 (2) | Free | Travel |
| [Guelph Transit OnYourWay](https://appshunter.io/ios/app/guelph-transit-onyourway/id1531209937) | — | Free | Travel |

## More apps by Spare Labs Inc.

- [Spare Driver](https://appshunter.io/ios/app/spare-driver/id1357405851)
- [Spare Rider](https://appshunter.io/ios/app/spare-rider/id1414542240)
- [KnowRoute](https://appshunter.io/ios/app/knowroute/id1455155582)
- [SW Prime](https://appshunter.io/ios/app/sw-prime/id1473175231)
- [STARNow](https://appshunter.io/ios/app/starnow/id1485041883)
- [Whistle!](https://appshunter.io/ios/app/whistle/id1495190039)

All apps by Spare Labs Inc.: https://appshunter.io/developer/1073027185

## Related topics

[grtc on the go](https://appshunter.io/ios/topics/grtc-on-the-go) · [kitchener](https://appshunter.io/ios/topics/kitchener) · [regional transit](https://appshunter.io/ios/topics/regional-transit)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*