# HEPCon vs SDD 2026

The clearest difference is update cadence: HEPCon at every 4 days against SDD 2026's monthly. SDD 2026's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

HEPCon ships an update every 4 days, SDD 2026 monthly. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | HEPCon | SDD 2026 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Monthly |
| Monetization | Free | — |
| Size | 117 MB | 15 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Martin Vassilev](https://appshunter.io/developer/1286500650) | [Poznan Supercomputing and Networking Center](https://appshunter.io/developer/726093818) |

## What reviewers say

### HEPCon

[App page](https://appshunter.io/ios/app/hepcon/id1286500651)

This app provides a structured mobile agenda for scientific and professional conferences, connecting to existing systems. Attendees can access program details offline, build personalized schedules, and receive live updates. Organizers can offer a mobile companion without workflow changes.

**Highlights:** Browse full conference program with filtering, Offline access to abstracts and session details, Personalized schedule with reminders, Bookmark talks and export to calendar, Follow announcements and live updates, Access venue information and contacts, Participate in presentation discussions

**Features:** Vision Pro support

**In-app purchases:** none


### SDD 2026

[App page](https://appshunter.io/ios/app/sdd-2026/id6779588867)

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

**In-app purchases:** none


## Frequently asked questions

### Is HEPCon free?

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

### Is SDD 2026 free?

SDD 2026 is free to download, with no in-app purchases.

### Do HEPCon or SDD 2026 have ads?

Neither HEPCon nor SDD 2026 shows ads.

### Which is updated more often, HEPCon or SDD 2026?

HEPCon ships an update every 4 days, and SDD 2026 monthly. Most recently, HEPCon was updated on October 8, 2026 and SDD 2026 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.*