# mEinstein vs CalMirror

The clearest difference is in-app purchases: mEinstein at none against CalMirror's 2. CalMirror's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, update cadence and ads there is nothing between them.

Both are free to download. CalMirror sells 2 in-app purchases, starting at $2.99 per month. mEinstein asks for nothing beyond the download.

mEinstein ships an update every 2 weeks, CalMirror every 3 weeks. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | mEinstein | CalMirror |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/meinstein/id6446581528/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 469 MB | 40 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [mEinstein LLC](https://appshunter.io/developer/1529132342) | [bad-company Incorporated](https://appshunter.io/developer/1618167935) |

## What reviewers say

### mEinstein

[App page](https://appshunter.io/ios/app/meinstein/id6446581528)

This app empowers users to control and monetize their personal data through an ethical marketplace. It also acts as an AI companion, offering personalized insights and recommendations powered by generative models. Your data is stored locally, ensuring privacy and security.

**Highlights:** Ethical data marketplace, AI companion with LLM, Personalized recommendations, Data ownership and control, Local data storage, Transparent data monetization

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### CalMirror

[App page](https://appshunter.io/ios/app/calmirror-multi-calendar-sync/id6759219374)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is mEinstein free?

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

### Is CalMirror free?

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

### Do mEinstein or CalMirror have ads?

Both mEinstein and CalMirror show ads.

### Which is updated more often, mEinstein or CalMirror?

mEinstein ships an update every 2 weeks, and CalMirror every 3 weeks. Most recently, mEinstein was updated on October 14, 2026 and CalMirror on October 10, 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.*