# Vlahi CERES vs Nucleus MDIS

The clearest difference is update cadence: Nucleus MDIS at every 2 weeks against Vlahi CERES's monthly. 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.

Vlahi CERES ships an update monthly, Nucleus MDIS every 2 weeks. The most recent releases landed on November 13, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Vlahi CERES | Nucleus MDIS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (8 ratings)](https://appshunter.io/ios/app/vlahi-ceres/id1450298580/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Freemium | — |
| Size | 71 MB | 74 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Vlahi Systems LLC](https://appshunter.io/developer/647026840) | [Southern Software, Inc.](https://appshunter.io/developer/377450203) |

## What reviewers say

### Vlahi CERES

[App page](https://appshunter.io/ios/app/vlahi-ceres/id1450298580)

This platform aids in chemical emergency incident planning and response by integrating plume dispersion models with real-time meteorological and sensor data. It offers free access to hazard modeling tools and optional subscription modules for enhanced capabilities like live weather, sensor-driven identification, and advanced reporting.

**Highlights:** Plume dispersion modeling, Real-time meteorological and sensor data integration, Google Maps integration with street view and traffic, ALOHA® model access, Subscription modules for enhanced capabilities, Incident data sharing and collaboration, KML import/export

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

**In-app purchases:** none


### Nucleus MDIS

[App page](https://appshunter.io/ios/app/nucleus-mdis/id6790421395)

**In-app purchases:** none


## Frequently asked questions

### Is Vlahi CERES free?

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

### Is Nucleus MDIS free?

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

### Do Vlahi CERES or Nucleus MDIS have ads?

Neither Vlahi CERES nor Nucleus MDIS shows ads.

### Which is updated more often, Vlahi CERES or Nucleus MDIS?

Vlahi CERES ships an update monthly, and Nucleus MDIS every 2 weeks. Most recently, Vlahi CERES was updated on November 13, 2026 and Nucleus MDIS on November 6, 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.*