# IMSA vs Membres ACO

The clearest difference is rating: Membres ACO at 4.7 against IMSA's 4.1. Membres ACO also leads on ads (none vs shown) and monetization model (free vs ad-supported). IMSA's advantage is ratings volume (69 vs 3). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

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

Membres ACO holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: IMSA has 69 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 28% of IMSA's written reviews are positive against 33% of Membres ACO's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | IMSA | Membres ACO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (69 ratings)](https://appshunter.io/ios/app/imsa/id789830071/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/membres-aco/id1463392544/reviews)** |
| Number of ratings | **69** | 3 |
| Positive reviews | 28.3% of reviews | **32.8% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Ad-supported | **Free** |
| Size | 93 MB | 113 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [International Motor Sports Association, LLC](https://appshunter.io/developer/795198030) | [SSP ACO](https://appshunter.io/developer/441201614) |

## What reviewers say

### IMSA

[App page](https://appshunter.io/ios/app/imsa/id789830071)

Stay updated with every IMSA race weekend. Access live video, IMSA Radio, and real-time timing and scoring for the WeatherTech SportsCar Championship and Michelin Pilot Challenge series.

**Highlights:** Live video streaming, IMSA Radio access, Live timing and scoring, Race weekend coverage, WeatherTech SportsCar Championship, Michelin Pilot Challenge

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

**In-app purchases:** none

**What reviewers like**

- 👍 Brilliant app
- 👍 Great app
- 👍 Very informative
- 👍 Awesome app!
- 👍 Suburb

**What reviewers complain about**

- 🐛 This app would be amazing if you could actually watch the race on the live stream
- 🐛 Won't let me delete account
- 🐛 Timing and scoring terrible
- 🐛 Live scoring needs improvement
- 🐛 It's so broken

**Reported bugs**

- No portrait mode
- Hamburger menu issues
- Incompatible with newer devices
- Outdated information
- Crashes when opened

**Requested features**

- Apple TV app
- Notifications
- Landscape mode
- Live feed
- Live timing and scoring


### Membres ACO

[App page](https://appshunter.io/ios/app/membres-aco/id1463392544)

Access your digital membership card for ACO Club Members. This app lets you easily manage your membership and engage with your passion.

**Highlights:** Digital membership card, Manage membership, Access club benefits, Stay updated on events

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is IMSA free?

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

### Is Membres ACO free?

Membres ACO is free to download, with no in-app purchases.

### Which has better reviews, IMSA or Membres ACO?

Membres ACO is rated higher. IMSA averages 4.1 out of 5 from 69 ratings, while Membres ACO averages 4.7 from 3 ratings.

### Do IMSA or Membres ACO have ads?

IMSA shows ads; Membres ACO does not.

### Which is updated more often, IMSA or Membres ACO?

IMSA ships an update every 2 months, and Membres ACO every 2 months. Most recently, IMSA was updated on October 12, 2026 and Membres ACO on October 14, 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.*