Comparison

Lean PD vs Mem

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lean PD

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
Read full description

Lean PD is the most effective way to develop yourself! Lean=efficient or elimination of waste. PD=personal development. So, Lean PD is the efficient way to personally develop yourself to reach your maximum potential. The whole concept is based on the idea of developing daily habits that support your BHAG (Big Hairy Audacious Goal). This app comes populated with examples of habits the developer has used to improve the quality of his life. You will enjoy how simple and easy it is to transform your life by performing daily habits that support your goals.

About

Mem

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
Read full description

Mem is your personal AI agent—a chief of staff that builds a living picture of your tasks, projects, and goals, then helps you follow through. Capture notes, meetings, ideas, research, and links without stopping to organize. Mem Agent uses that context to answer questions, recall details, plan, draft, summarize, and move work forward. YOUR WORKSPACE, KEPT FOR YOU Write it down, say it out loud, record a meeting, or save it from another app. Mem keeps everything connected, searchable, and ready when you need it. ASK ANYTIME. SKIP THE BRIEFING. Mem Agent knows the context you have saved, so you can ask what matters now instead of rebuilding the backstory. Recall a detail, summarize a week of meetings, connect related ideas, draft a message, or plan the next step. PROACTIVE WORK THAT SCALES Mem automatically detects and tracks tasks and projects from the notes you create or edit. With Mem Pro, add custom routines that prepare briefings, do research, organize notes, and send scheduled reminders. Connect tools like Gmail, Slack, and Todoist so Mem can use more of your work as context. VOICE NOTES THAT STAY USEFUL Record a thought, meeting, or reminder. Mem keeps the audio and transcript together and helps turn rough input into clear, structured notes. FIND ANYTHING YOU’VE SAVED Search by topic, person, project, or a vague memory. Mem helps retrieve information even when you do not remember the exact wording. CAPTURE FROM ANYWHERE Use Share to Mem to save text, links, webpages, files, and more from other apps. Capture quickly, then return to the work in front of you. AVAILABLE ACROSS YOUR DEVICES Use Mem on iPhone, Mac, Windows, and the web. Work offline on iPhone, then sync when you are connected again. PRIVATE BY DEFAULT Your notes start private. Share them only when you choose. Every plan includes Mem Agent; usage limits vary by plan. Custom routines and connections require Mem Pro or higher. Trial eligibility and pricing are shown in the app. Privacy Policy: https://get.mem.ai/pages/privacy Terms of Service: https://get.mem.ai/pages/terms-of-service

Screenshots

Lean PD4 screens
Mem4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Lean PD versus Mem: the parameters behind the verdict, then further details
ParameterLean PDMem
PriceFreeFree
Rating4.3 (9 ratings)4.4 (129 ratings) — better
Positive reviews86.4% of reviews — better41.1% of reviews
Number of ratings9129 — better
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better18.0
Further details — not scored
Size1 MB99 MB
Age rating4+4+
DeveloperPaul AkersMem Labs, Inc.

Customer experience

Lean PD

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews22 reviews
Positive86.4%
Neutral4.5%
Negative9.1%

Mem

All ratings126 ratings
Positive83.3%
Neutral5.6%
Negative11.1%
Written reviews129 reviews
Positive41.1%
Neutral9.3%
Negative49.6%

Bugs and requests

Lean PD

Not enough reviews yet to summarise bugs or requests.

Mem

Reported bugs

20 issues
  • 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
Show 15 more
  • List formatting becomes corrupted and uneditable
  • Sync failures between web and mobile versions
  • Tags not linking to existing tags, only creating duplicates
  • Recent search results not clickable
  • Starred mems not displaying
  • AI chat getting stuck and unable to respond
  • Payment charged multiple times without proper plan activation
  • Unable to cancel subscription (confirm button non-functional)
  • Login issues across different platforms and devices
  • App freezing when switching between apps
  • Categories functionality inconsistent and buggy
  • Pull-to-refresh gesture removed with no alternative
  • Search function returning irrelevant results or no results
  • Slow performance and lag on mobile devices
  • AI unable to reference or update notes properly

Requested features

19 requests
  • 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
Show 14 more
  • Folder/collection organization system
  • Web scraping and webpage chat integration
  • Multi-language support (Russian, French, etc.)
  • Voice recognition in multiple languages
  • Templates on mobile app
  • Tagging and categorization on mobile
  • API access for third-party integrations
  • Import from Obsidian, Notion, Evernote, Apple Notes
  • Light mode option
  • PDF import and annotation
  • Audio recording and playback
  • Better iPad/Stage Manager support
  • Email-based login option
  • Automatic task carry-over to next day

In-app purchases

None

Lean PD

No in-app purchases

10 purchases

Mem

Subscriptions10
  • Mem Plus$9.001 Month
  • Pro$12.001 Month
  • Mem Pro7 Days trial$29.001 Month
Show 7 more
  • Proactive7 Days trial$29.001 Month
  • Mem Pro 2x$49.001 Month
  • Proactive7 Days trial$59.001 Month
  • Mem Pro 5x$99.001 Month
  • Proactive7 Days trial$99.001 Month
  • Mem Pro 10x$149.001 Month
  • Mem Pro 20x$199.001 Month

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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