# STACK Storage vs Erbij

The clearest difference is in-app purchases: STACK Storage at none against Erbij's 6. Erbij's advantage is ratings volume (6 vs 2). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Erbij sells 6 in-app purchases, starting at $1.99 per month. STACK Storage asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for STACK Storage against 5.0 for Erbij. Both are backed by a comparable volume of ratings — 2 and 6 respectively.

STACK Storage ships an update every 2 weeks, Erbij every 8 days. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | STACK Storage | Erbij |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/stack-storage/id985218254/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/erbij-whos-coming/id1360268931/reviews) |
| Number of ratings | 2 | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | **Free** | Freemium |
| Size | 23 MB | 73 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TransIP BV](https://appshunter.io/developer/325181787) | [Michiel van Roon Holding B.V.](https://appshunter.io/developer/1360268930) |

## What reviewers say

### STACK Storage

[App page](https://appshunter.io/ios/app/stack-storage/id985218254)

Securely store, access, and share your files from any device. Automatically back up photos and videos, and share links or files directly with others. Offers password protection for added security.

**Highlights:** Secure online storage, Access files from any device, Share files and download links, Automatic photo and video upload, Password protection, 256-bit encryption

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

**In-app purchases:** none


### Erbij

[App page](https://appshunter.io/ios/app/erbij-whos-coming/id1360268931)

Easily coordinate events and activities with teams and groups. Invite members, manage RSVPs, and receive important notifications for upcoming events. Syncs with your existing calendar and offers directions to event locations.

**Highlights:** Invite team members via WhatsApp, Manage RSVPs with optional excuses, Automatic team member invitations, Activity notifications and cancellations, Get directions to event locations, Sync with personal calendar, Send reminders to non-responders, Limit attendee numbers

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Erbij Plus (1 month) | $1.99 | per month |
| Erbij Plus (1 year) | $16.49 | per year |
| Plain coffee | $0.99 | one-time |
| Cappuccino Deluxe | $4.99 | one-time |
| Pumpkin Spice Latte | $8.99 | one-time |
| Erbij Plus (forever) | $64.99 | one-time |


## Frequently asked questions

### Is STACK Storage free?

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

### Is Erbij free?

Erbij is free to download, with in-app purchases available.

### Which has better reviews, STACK Storage or Erbij?

STACK Storage and Erbij are both rated 5.0 out of 5 on the App Store, from 2 and 6 ratings respectively.

### Do STACK Storage or Erbij have ads?

Neither STACK Storage nor Erbij shows ads.

### Which is updated more often, STACK Storage or Erbij?

STACK Storage ships an update every 2 weeks, and Erbij every 8 days. Most recently, STACK Storage was updated on October 11, 2026 and Erbij on October 2, 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.*