# Memz LLM vs Estratum

The clearest difference is in-app purchases: Memz LLM at none against Estratum's 1. Memz LLM also leads on update cadence (every 3 days vs every 2 weeks) and iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Estratum sells 1 one-off in-app purchase. Memz LLM asks for nothing beyond the download.

Memz LLM ships an update every 3 days, Estratum every 2 weeks. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Memz LLM | Estratum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Size | 28 MB | 28 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AppBridge Inc.](https://appshunter.io/developer/1866458100) | [LyXeoN](https://appshunter.io/developer/566849105) |

## What reviewers say

### Memz LLM

[App page](https://appshunter.io/ios/app/memz-llm/id6777074142)

**In-app purchases:** none


### Estratum

[App page](https://appshunter.io/ios/app/estratum-second-brain/id6795179990)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Estratum Pro — Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Memz LLM free?

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

### Is Estratum free?

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

### Do Memz LLM or Estratum have ads?

Neither Memz LLM nor Estratum shows ads.

### Which is updated more often, Memz LLM or Estratum?

Memz LLM ships an update every 3 days, and Estratum every 2 weeks. Most recently, Memz LLM was updated on October 19, 2026 and Estratum on October 17, 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.*