# EF Calculator vs botek assistant

The clearest difference is update cadence: botek assistant at every 2 months against EF Calculator's every 8 months. EF Calculator's advantage is iOS requirement (11.0 vs 15). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EF Calculator ships an update every 8 months, botek assistant every 2 months. The most recent releases landed on September 4, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | EF Calculator | botek assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Size | 10 MB | 18 MB |
| Requires iOS | **11.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik fuer Praezisionswerkzeuge](https://appshunter.io/developer/1152974581) | [botek Praezisionsbohrtechnik GmbH](https://appshunter.io/developer/1623192421) |

## What reviewers say

### EF Calculator

[App page](https://appshunter.io/ios/app/ef-calculator/id1164942213)

**Features:** macOS Compatibility

**In-app purchases:** none


### botek assistant

[App page](https://appshunter.io/ios/app/botek-assistant/id1623192419)

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

**In-app purchases:** none


## Frequently asked questions

### Is EF Calculator free?

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

### Is botek assistant free?

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

### Do EF Calculator or botek assistant have ads?

Neither EF Calculator nor botek assistant shows ads.

### Which is updated more often, EF Calculator or botek assistant?

EF Calculator ships an update every 8 months, and botek assistant every 2 months. Most recently, EF Calculator was updated on September 4, 2026 and botek assistant on September 12, 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.*