# Sirius Future Учитель vs Eisen

The clearest difference is in-app purchases: Sirius Future Учитель at none against Eisen's 2. Sirius Future Учитель also leads on ads (none vs shown) and update cadence (every 2 months vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Eisen sells 2 in-app purchases, starting at $4.99 per month. Sirius Future Учитель asks for nothing beyond the download.

Sirius Future Учитель ships an update every 2 months, Eisen every 7 months. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Sirius Future Учитель | Eisen |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 18.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | — | Free with in-app purchases |
| Size | 47 MB | 74 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [SIRIUS FUTURE L.L.C-FZ](https://appshunter.io/developer/1652311561) | [kota tada](https://appshunter.io/developer/1658942612) |

## What reviewers say

### Sirius Future Учитель

[App page](https://appshunter.io/ios/app/sirius-future/id6473452293)

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

**In-app purchases:** none


### Eisen

[App page](https://appshunter.io/ios/app/eisen-eisenhower-task-man/id6736972350)

This task management application employs the Eisenhower Matrix to help users prioritize tasks based on urgency and importance. It offers a straightforward interface for adding, removing, and reviewing tasks, enabling a focused approach to daily productivity.

**Highlights:** Eisenhower Matrix task classification, Add and remove tasks, Review completed tasks, Focus on critical tasks, Simple user interface, Daily productivity maximization

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $49.99 | per year |


## Frequently asked questions

### Is Sirius Future Учитель free?

Sirius Future Учитель is free to download, with no in-app purchases.

### Is Eisen free?

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

### Do Sirius Future Учитель or Eisen have ads?

Eisen shows ads; Sirius Future Учитель does not.

### Which is updated more often, Sirius Future Учитель or Eisen?

Sirius Future Учитель ships an update every 2 months, and Eisen every 7 months. Most recently, Sirius Future Учитель was updated on October 4, 2026 and Eisen on October 15, 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.*