# Mem vs Heptabase

The clearest difference is in-app purchases: Heptabase at none against Mem's 10. Heptabase also leads on review sentiment (70% vs 41%) and iOS requirement (15.5 vs 18.0). On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.4 for Mem against 4.3 for Heptabase. Both are backed by a comparable volume of ratings — 129 and 71 respectively. Written reviews are what separate them: 41% of Mem's written reviews are positive against 70% of Heptabase's.

Mem ships an update every 3 days, Heptabase every 6 days. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Mem | Heptabase |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (129 ratings)](https://appshunter.io/ios/app/mem-your-personal-ai-agent/id1578757028/reviews)** | [4.3 (71 ratings)](https://appshunter.io/ios/app/heptabase/id6445801508/reviews) |
| Number of ratings | **129** | 71 |
| Positive reviews | 41.1% of reviews | **70.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 99 MB | 240 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mem Labs, Inc.](https://appshunter.io/developer/1030154393) | [Hepta Platforms, Inc](https://appshunter.io/developer/1673863042) |

## What reviewers say

### 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


### Heptabase

[App page](https://appshunter.io/ios/app/heptabase/id6445801508)

This visual note-taking application helps users learn complex subjects. The mobile version offers complete access to all your notes, journals, and whiteboards, allowing you to review your work on the go.

**Highlights:** Visual note-taking, Learn complex topics, Access cards and journals, Read whiteboards, Mobile access

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

**In-app purchases:** none


## Frequently asked questions

### Is Mem free?

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

### Is Heptabase free?

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

### Which has better reviews, Mem or Heptabase?

Mem is rated higher. Mem averages 4.4 out of 5 from 129 ratings, while Heptabase averages 4.3 from 71 ratings.

### Do Mem or Heptabase have ads?

Neither Mem nor Heptabase shows ads.

### Which is updated more often, Mem or Heptabase?

Mem ships an update every 3 days, and Heptabase every 6 days. Most recently, Mem was updated on October 20, 2026 and Heptabase on October 24, 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.*