# DeltaMaster ReaderApp vs AECOS Meetings

The clearest difference is device support: DeltaMaster ReaderApp at 3 against AECOS Meetings's 1. DeltaMaster ReaderApp also leads on iOS requirement (8.0 vs 17). On price, update cadence, ads 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.

DeltaMaster ReaderApp ships an update every 3 months, AECOS Meetings every 2 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | DeltaMaster ReaderApp | AECOS Meetings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (14 ratings)](https://appshunter.io/ios/app/aecos-meetings/id1631197909/reviews)** |
| Number of ratings | — | **14** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 42 MB | 91 MB |
| Requires iOS | **8.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Bissantz & Company GmbH](https://appshunter.io/developer/459444758) | [ACOS](https://appshunter.io/developer/1382162770) |

## What reviewers say

### DeltaMaster ReaderApp

[App page](https://appshunter.io/ios/app/deltamaster-readerapp/id459463520)

**Features:** macOS Compatibility

**In-app purchases:** none


### AECOS Meetings

[App page](https://appshunter.io/ios/app/aecos-meetings/id1631197909)

Stay informed and connected at AECOS events with the official mobile app. Access event details, network with attendees, and share experiences.

**Highlights:** Event updates, Attendee networking, Information access, Experience sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is DeltaMaster ReaderApp free?

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

### Is AECOS Meetings free?

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

### Do DeltaMaster ReaderApp or AECOS Meetings have ads?

Neither DeltaMaster ReaderApp nor AECOS Meetings shows ads.

### Which is updated more often, DeltaMaster ReaderApp or AECOS Meetings?

DeltaMaster ReaderApp ships an update every 3 months, and AECOS Meetings every 2 months. Most recently, DeltaMaster ReaderApp was updated on October 26, 2026 and AECOS Meetings on October 30, 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.*