# EpiCentr vs Observer

The clearest difference is price: EpiCentr at Free against Observer's $1.99. Observer's advantage is in-app purchases (none vs 8). On update cadence, ads, device support and iOS requirement there is nothing between them.

EpiCentr is free to download; Observer costs $1.99 up front. EpiCentr sells 8 in-app purchases, starting at $15.99 per month. Observer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | EpiCentr | Observer |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (1.7K ratings)](https://appshunter.io/ios/app/epicentr-seizure-detection/id1640509073/reviews)** | — |
| Number of ratings | **1.7K** | — |
| Positive reviews | 59.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 143 MB | 24 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [AIHUNTERS, UAB](https://appshunter.io/developer/1625333939) | [Scott Schinkel](https://appshunter.io/developer/1896525562) |

## What reviewers say

### EpiCentr

[App page](https://appshunter.io/ios/app/epicentr-seizure-detection/id1640509073)

This app enhances safety for individuals with seizure disorders and their caregivers. It automatically detects seizure-like triggers using wearable device sensors and alerts emergency contacts. A detailed journal and statistics reports provide valuable insights for users and healthcare providers.

**Highlights:** Automated seizure detection, Emergency contact alerts, Manual alert activation, GPS location sharing, Comprehensive seizure journal, Descriptive statistics reports, Caregiver and user modes

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version - Monthly Plan | $15.99 | per month |
| Full Version - Monthly Access | $17.99 | per month |
| Full Version - Quarterly Plan | $35.99 | per 3 months |
| Full Version Quarterly Access | $44.99 | per 3 months |
| Personal Offer - Yearly Plan Access | $59.99 | per year |
| Personal Offer - Yearly Access | $69.99 | per year |
| Full Version - Yearly Plan | $119.99 | per year |
| Full Version - Yearly Access | $139.99 | per year |

**What reviewers like**

- 🚀 Accurate seizure detection
- 👍 Helpful for tracking seizures
- 🔒 Provides peace of mind
- 📋 Useful logging and reporting features

**What reviewers complain about**

- 🐛 Inconsistent seizure detection
- 🔋 High battery drain on Apple Watch
- 💰 Expensive subscription
- 🔍 Difficult to use/navigate

**Reported bugs**

- Delayed or missed seizure alerts
- Frequent false alerts
- Connectivity issues between app and watch

**Requested features**

- Video recording option
- Ability for caregivers to add notes
- Automatic emergency contact notification
- Customizable alert settings


### Observer

[App page](https://appshunter.io/ios/app/observer/id6767963185)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is EpiCentr free?

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

### Is Observer free?

Observer costs $1.99, with no in-app purchases.

### Do EpiCentr or Observer have ads?

Neither EpiCentr nor Observer shows ads.

### Which is updated more often, EpiCentr or Observer?

EpiCentr ships an update every 3 weeks, and Observer every 3 weeks. Most recently, EpiCentr was updated on October 25, 2026 and Observer on October 10, 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.*