# OmniPlan 4 vs Retain AI

The clearest difference is rating: Retain AI at 5.0 against OmniPlan 4's 3.9. Retain AI also leads on in-app purchases (none vs 10). OmniPlan 4's advantage is update cadence (every 2 months vs every 7 months) and ratings volume (20 vs 2). On price and ads there is nothing between them.

Both are free to download. OmniPlan 4 sells 10 in-app purchases, starting at $19.99 per month. Retain AI asks for nothing beyond the download.

Retain AI holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: OmniPlan 4 has 20 ratings behind it against 2, so its average is the more settled of the two.

OmniPlan 4 ships an update every 2 months, Retain AI every 7 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OmniPlan 4 | Retain AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (20 ratings)](https://appshunter.io/ios/app/omniplan-4/id1460319993/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/retain-ai/id6751521398/reviews)** |
| Number of ratings | **20** | 2 |
| Positive reviews | 23.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Paid | **Free** |
| Size | 68 MB | 31 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [The Omni Group](https://appshunter.io/developer/281731738) | [Ryan Rapp](https://appshunter.io/developer/977897193) |

## What reviewers say

### OmniPlan 4

[App page](https://appshunter.io/ios/app/omniplan-4/id1460319993)

This app offers robust project management capabilities, allowing users to view, edit, and organize complex projects. It provides tools for tracking progress, managing teams, and improving workflows with features like automatic scheduling and critical path highlighting.

**Highlights:** Automatic project scheduling, Resource leveling, Team collaboration, Critical path highlighting, Interactive Gantt timeline, Network diagram view

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Legacy Subscription | $19.99 | per month |
| Legacy Subscription | $199.99 | per year |
| Free Upgrade to v4 Pro | Free | one-time |
| Free Upgrade to v4 Standard | Free | one-time |
| Upgrade to v4 Standard | $99.99 | one-time |
| Upgrade from Standard to Pro | $99.99 | one-time |
| Unlock Standard | $199.99 | one-time |
| Upgrade to v4 Pro | $199.99 | one-time |
| Upgrade from Standard to Pro | $199.99 | one-time |
| Unlock Pro | $399.99 | one-time |


### Retain AI

[App page](https://appshunter.io/ios/app/retain-ai/id6751521398)

This app transforms voice memos, calls, and documents into organized tasks and drafts. It understands context and decisions to proactively generate content, allowing users to review and send.

**Highlights:** Voice memo to task conversion, Call and document analysis, Automated draft generation, Contextual understanding, Cross-device syncing, User control over output

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

**In-app purchases:** none


## Frequently asked questions

### Is OmniPlan 4 free?

OmniPlan 4 is free to download, with in-app purchases available.

### Is Retain AI free?

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

### Which has better reviews, OmniPlan 4 or Retain AI?

Retain AI is rated higher. OmniPlan 4 averages 3.9 out of 5 from 20 ratings, while Retain AI averages 5.0 from 2 ratings.

### Do OmniPlan 4 or Retain AI have ads?

Neither OmniPlan 4 nor Retain AI shows ads.

### Which is updated more often, OmniPlan 4 or Retain AI?

OmniPlan 4 ships an update every 2 months, and Retain AI every 7 months. Most recently, OmniPlan 4 was updated on November 3, 2026 and Retain AI on October 30, 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.*