# Compass Retro vs Slime

The clearest difference is ads: Slime at none against Compass Retro's shown. Compass Retro's advantage is monetization model (free vs freemium) and iOS requirement (15.6 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Compass Retro sells 1 one-off in-app purchase and Slime sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Compass Retro against 5.0 for Slime. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Compass Retro ships an update every 8 days, Slime every 11 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Compass Retro | Slime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/compass-retro/id6758898828/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/slime-ai-thinking-partner/id6759446033/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 11 days |
| Monetization | **Free** | Freemium |
| Size | 36 MB | 15 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [akira ohmachi](https://appshunter.io/developer/1338624340) | [Tai-Er MA](https://appshunter.io/developer/1262840314) |

## What reviewers say

### Compass Retro

[App page](https://appshunter.io/ios/app/compass-retro/id6758898828)

Experience a photorealistic retro compass that transforms your device into an intuitive navigation tool. It offers a full-screen analog display with smooth needle alignment to true north. Choose between light and dark themes for a visually appealing experience.

**Highlights:** Full-screen photorealistic display, Smooth true north alignment, Intuitive analog instrument feel, Light and dark theme support, Purpose-built for reliable navigation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Slime

[App page](https://appshunter.io/ios/app/slime-ai-thinking-partner/id6759446033)

Capture your thoughts using voice and have them organized and acted upon. This AI partner remembers your ideas, tasks, and commitments, providing daily briefings and integrating with your existing tools.

**Highlights:** Voice note capture, AI-powered organization, Task and commitment tracking, Daily briefings, Calendar and reminder integration, Works with Gmail and Docs

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Minion | $9.99 | per month |
| Knight | $24.99 | per month |
| Oracle | $99.99 | per month |


## Frequently asked questions

### Is Compass Retro free?

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

### Is Slime free?

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

### Which has better reviews, Compass Retro or Slime?

Compass Retro and Slime are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Compass Retro or Slime have ads?

Compass Retro shows ads; Slime does not.

### Which is updated more often, Compass Retro or Slime?

Compass Retro ships an update every 8 days, and Slime every 11 days. Most recently, Compass Retro was updated on November 3, 2026 and Slime on October 31, 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.*