# GroupFlow vs Lumo AI by Proton

The clearest difference is rating: GroupFlow at 5.0 against Lumo AI by Proton's 3.9. GroupFlow also leads on in-app purchases (none vs 2) and iOS requirement (15.1 vs 17.6). Lumo AI by Proton's advantage is ratings volume (557 vs 2) and update cadence (every 11 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Lumo AI by Proton sells 2 in-app purchases, starting at $12.99 per month. GroupFlow asks for nothing beyond the download.

GroupFlow holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Lumo AI by Proton has 557 ratings behind it against 2, so its average is the more settled of the two.

GroupFlow ships an update monthly, Lumo AI by Proton every 11 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | GroupFlow | Lumo AI by Proton |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/groupflow/id1634247691/reviews)** | [3.9 (557 ratings)](https://appshunter.io/ios/app/lumo-ai-by-proton/id6746714949/reviews) |
| Number of ratings | 2 | **557** |
| Positive reviews | — | 45.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 103 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Moxley Data Inc](https://appshunter.io/developer/1634247693) | [Proton AG](https://appshunter.io/developer/979659484) |

## What reviewers say

### GroupFlow

[App page](https://appshunter.io/ios/app/groupflow/id1634247691)

This platform streamlines management for member-based organizations and clubs. It offers tools for member profiles, event scheduling, online payments, group communication, and a dedicated website. Designed for in-person communities, it keeps leaders and members connected.

**Highlights:** Member management with customizable profiles, Event scheduling with RSVPs and ticket sales, Online payments for dues and events, Group messaging and announcements, Dedicated organization website, Mobile app for members

**Features:** Vision Pro support

**In-app purchases:** none


### Lumo AI by Proton

[App page](https://appshunter.io/ios/app/lumo-ai-by-proton/id6746714949)

This AI assistant prioritizes your privacy, offering help with productivity, curiosity, and staying informed. Developed by the team behind trusted encrypted services, it ensures your data remains secure.

**Highlights:** Privacy-first AI assistant, Boost productivity, Satisfy curiosity, Stay informed, Secure data handling

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lumo Plus (1 month) | $12.99 | per month |
| Lumo Plus (12 months) | $119.99 | per year |

**What reviewers like**

- 👍 Sophisticated knowledge base
- 🚀 Rapid evolution with quality
- 💡 Potential for vision-enabled model

**What reviewers complain about**

- 🐛 Inability to answer basic questions
- 🔒 Privacy concerns with data processing
- 🐛 Inconsistent responses
- 🐛 Frequent sign-outs
- 🐛 Dark mode issues

**Reported bugs**

- Slow sign-in page
- Lack of real-time data access

**Requested features**

- Dynamic Type support for adjustable font size
- Secure access to Proton Drive files
- Ghost mode to ensure no chat history is saved
- Intuitive history clearing option
- App mode


## Frequently asked questions

### Is GroupFlow free?

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

### Is Lumo AI by Proton free?

Lumo AI by Proton is free to download, with in-app purchases available.

### Which has better reviews, GroupFlow or Lumo AI by Proton?

GroupFlow is rated higher. GroupFlow averages 5.0 out of 5 from 2 ratings, while Lumo AI by Proton averages 3.9 from 557 ratings.

### Do GroupFlow or Lumo AI by Proton have ads?

Neither GroupFlow nor Lumo AI by Proton shows ads.

### Which is updated more often, GroupFlow or Lumo AI by Proton?

GroupFlow ships an update monthly, and Lumo AI by Proton every 11 days. Most recently, GroupFlow was updated on October 24, 2026 and Lumo AI by Proton on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*