# Lean PD vs Mem

Lean PD and Mem both sit at 4.3 stars, but that hides the real split: 86% of Lean PD's written reviews are positive against 41% of Mem's. Lean PD also leads on in-app purchases (none vs 10) and iOS requirement (12.0 vs 18.0). Mem's advantage is update cadence (every 3 days vs every 4 months) and ratings volume (129 vs 9). On price, rating, ads and device support there is nothing between them.

Both are free to download. Mem sells 10 in-app purchases, starting at $9.00 per month. Lean PD asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for Lean PD against 4.4 for Mem. That said, the two scores are not equally well evidenced: Mem has 129 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 86% of Lean PD's written reviews are positive against 41% of Mem's.

Lean PD ships an update every 4 months, Mem every 3 days. The most recent releases landed on October 20, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Lean PD | Mem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/lean-pd/id1018470164/reviews) | **[4.4 (129 ratings)](https://appshunter.io/ios/app/mem-your-personal-ai-agent/id1578757028/reviews)** |
| Number of ratings | 9 | **129** |
| Positive reviews | **86.4% of reviews** | 41.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 99 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paul Akers](https://appshunter.io/developer/1018470163) | [Mem Labs, Inc.](https://appshunter.io/developer/1030154393) |

## What reviewers say

### Lean PD

[App page](https://appshunter.io/ios/app/lean-pd/id1018470164)

This app helps you achieve personal development goals through efficient daily habit formation. It focuses on eliminating waste in your self-improvement journey to reach your maximum potential. Transform your life by building habits that support your ambitious objectives.

**Highlights:** Efficient personal development, Daily habit formation, Goal support, Eliminate waste in self-improvement, Pre-populated habit examples

**Features:** macOS Compatibility

**In-app purchases:** none


### Mem

[App page](https://appshunter.io/ios/app/mem-your-personal-ai-agent/id1578757028)

This app acts as an AI-powered thought partner, capturing and organizing your ideas, meetings, and research. It allows you to use voice to create and edit notes, and an AI assistant can recall, summarize, and reorganize your information. It also surfaces relevant notes automatically and offers powerful search capabilities.

**Highlights:** Voice-to-text note creation and editing, AI-powered summarization and recall, Automatic organization and structuring of notes, Intelligent surfacing of related information, Deep search for any note, Cross-device synchronization, Offline access

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mem Plus | $9.00 | per month |
| Pro | $12.00 | per month |
| Mem Pro | $29.00 | per month |
| Proactive | $29.00 | per month |
| Mem Pro 2x | $49.00 | per month |
| Proactive | $59.00 | per month |
| Mem Pro 5x | $99.00 | per month |
| Proactive | $99.00 | per month |
| Mem Pro 10x | $149.00 | per month |
| Mem Pro 20x | $199.00 | per month |

**What reviewers like**

- 🤖 AI-powered note organization and auto-categorization
- 💬 Integrated ChatGPT/AI chat assistant for research and synthesis
- 🎙️ Voice-to-text transcription with formatting
- 🔗 Intelligent linking of related notes
- ⚡ Fast and intuitive interface design

**What reviewers complain about**

- 🐛 Frequent app crashes and freezes
- 🔄 Unreliable syncing between devices
- 📱 iOS app significantly less featured than desktop version
- 🔐 Requires Google/Apple login (no email option)
- 💾 Data loss and notes disappearing unexpectedly

**Reported bugs**

- Notes disappearing without trace or recovery option
- Bottom navigation bar covering key buttons
- Settings popup incorrectly prompts to download app already installed
- Black bar covering AI tool input field on web version
- Photos not saving or disappearing after one day

**Requested features**

- True hands-free voice activation with Siri shortcuts
- Widget support for voice notes and Apple Watch
- Node/mind map graph visualization of note connections
- PDF and document export functionality
- Full markdown support


## Frequently asked questions

### Is Lean PD free?

Lean PD is free to download, with no in-app purchases.

### Is Mem free?

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

### Which has better reviews, Lean PD or Mem?

Mem is rated higher. Lean PD averages 4.3 out of 5 from 9 ratings, while Mem averages 4.4 from 129 ratings.

### Do Lean PD or Mem have ads?

Neither Lean PD nor Mem shows ads.

### Which is updated more often, Lean PD or Mem?

Lean PD ships an update every 4 months, and Mem every 3 days. Most recently, Lean PD was updated on October 20, 2026 and Mem on October 27, 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.*