# EI Field App vs Untangle

The clearest difference is in-app purchases: EI Field App at none against Untangle's 2. EI Field App also leads on ads (none vs shown). Untangle's advantage is update cadence (fortnightly vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Untangle sells 2 in-app purchases, starting at $4.99 per month. EI Field App asks for nothing beyond the download.

EI Field App ships an update every 4 months, Untangle fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | EI Field App | Untangle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (10 ratings)](https://appshunter.io/ios/app/untangle-one-big-thing/id6480317961/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | — | Free with in-app purchases |
| Size | 123 MB | 66 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [EcoMetrix Solutions Group](https://appshunter.io/developer/1167560424) | [Tailwind Engineering LLC](https://appshunter.io/developer/1738681947) |

## What reviewers say

### EI Field App

[App page](https://appshunter.io/ios/app/ei-field-app/id6450648578)

**Features:** Vision Pro support

**In-app purchases:** none


### Untangle

[App page](https://appshunter.io/ios/app/untangle-one-big-thing/id6480317961)

This AI-powered productivity tool transforms daily chaos into actionable plans that adapt in real-time. It learns your patterns and priorities to ensure nothing falls through the cracks, giving you back your attention. Focus on what matters most with an intelligent approach to personal productivity.

**Highlights:** Adaptive daily planning, AI-powered insights, Seamless integration with existing tools, Personalized priority management, Breaks down complex projects, Identifies scheduling conflicts, Suggests optimal work times

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Untangle Pro Monthly | $4.99 | per month |
| Untangle Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is EI Field App free?

EI Field App is free to download, with no in-app purchases.

### Is Untangle free?

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

### Do EI Field App or Untangle have ads?

Untangle shows ads; EI Field App does not.

### Which is updated more often, EI Field App or Untangle?

EI Field App ships an update every 4 months, and Untangle fortnightly. Most recently, EI Field App was updated on November 3, 2026 and Untangle on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*