# Essen Billing vs Foku

The clearest difference is rating: Foku at 5.0 against Essen Billing's 3.8. Essen Billing's advantage is in-app purchases (none vs 2). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Foku sells 2 in-app purchases, starting at $4.99 per month. Essen Billing asks for nothing beyond the download.

Foku holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively.

Essen Billing ships an update every 4 weeks, Foku every 2 weeks. The most recent releases landed on August 12, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Essen Billing | Foku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/essen-billing/id6738091863/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/foku-study-buddy-focus-timer/id6761107547/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 145 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Essen Medical Associates, PC](https://appshunter.io/developer/966860925) | [GORDON JIN](https://appshunter.io/developer/1887810474) |

## What reviewers say

### Essen Billing

[App page](https://appshunter.io/ios/app/essen-billing/id6738091863)

This app digitizes claim submissions for healthcare providers, integrating with a revenue cycle management platform. It allows for updating patient rosters, submitting claims, and tracking billing status to improve efficiency and accuracy.

**Highlights:** Digitize claim submissions, Integrates with RCM platform, Access real-time codes, Update patient rosters, Track billing status, User-friendly platform

**Features:** macOS Compatibility

**In-app purchases:** none


### Foku

[App page](https://appshunter.io/ios/app/foku-study-buddy-focus-timer/id6761107547)

This app uses your camera to detect distractions and provides gentle reminders to help you stay focused during study or work sessions. It also includes lo-fi music to aid concentration and tracks your daily progress.

**Highlights:** Smart distraction detection, Lo-fi music for concentration, Friendly companion character, Daily progress tracking, Pomodoro timer, Break games

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Foku Plus Monthly | $4.99 | per month |
| Foku Plus Annual | $39.99 | per year |


## Frequently asked questions

### Is Essen Billing free?

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

### Is Foku free?

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

### Which has better reviews, Essen Billing or Foku?

Foku is rated higher. Essen Billing averages 3.8 out of 5 from 4 ratings, while Foku averages 5.0 from 4 ratings.

### Do Essen Billing or Foku have ads?

Neither Essen Billing nor Foku shows ads.

### Which is updated more often, Essen Billing or Foku?

Essen Billing ships an update every 4 weeks, and Foku every 2 weeks. Most recently, Essen Billing was updated on August 12, 2026 and Foku on September 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.*