Dreher App vs EF Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dreher App
This productivity tool offers a comprehensive calculator and formulary for craft professions. It includes essential data like ISO fits and thread specifications, along with other useful general information.
- Calculator
- Formulary
- ISO fits data
- Thread specifications
- General craft information
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This is an app with a calculator, formulary, Unit, General for Craft professions (ISO fits, threads, ...) and many more
EF Calculator
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This App calculates cutting data for Twist Drills, Taps, Cold Forming Taps, Thread Milling Cutters and Milling Cutters. For the collet holder EMUGE Speedsynchro® and for FRANKEN Circle Segment End Mills is a Return-on-Investment-Calculator installed. It enables a comparison of cost and time against conventional machining processes.
Screenshots
Verdict
The clearest difference is update cadence: Dreher App at every 4 months against EF Calculator's every 8 months. EF Calculator's advantage is iOS requirement (11.0 vs 13.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Dreher App ships an update every 4 months, EF Calculator every 8 months. The most recent releases landed on October 17, 2026 and September 18, 2026 respectively.
| Parameter | Dreher App | EF Calculator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 4 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.1 | 11.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Markus Meckel | EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik fuer Praezisionswerkzeuge |
In-app purchases
Dreher App
No in-app purchases
EF Calculator
No in-app purchases
Questions
Is Dreher App free?
Is EF Calculator free?
Do Dreher App or EF Calculator have ads?
Which is updated more often, Dreher App or EF Calculator?
Other comparisons
