Z21Updater vs Dremel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Z21Updater
Easily update your Z21, z21, z21start, and smartRail devices. The app automatically detects connected hardware and fetches the latest firmware directly from the server when online, simplifying the update process.
- Automatic device recognition
- Direct server updates
- Simple and functional update process
- Supports Z21, z21, z21start, smartRail
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This app allows you to conveniently keep your Z21, z21, z21start and smartRail always up to date. The connected device is automatically recognized by the app. New updates are directly queried from the server when connected to the Internet thus the update process is very simple and functional.
Dremel
This app connects to a smart rotary tool to provide usage insights, performance alerts, and speed recommendations. It helps users find the right accessories and settings for their projects, monitor tool battery life, and manage tool health.
- Bluetooth pairing with smart rotary tool
- Accessory and speed recommendations
- Tool dashboard with battery and usage time
- Performance alerts and preventative tips
- Accessory guides for various Dremel tools
- Material guide for rotary tool accessories
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INTRODUCING THE DREMEL 8260. THE WORLD’S FIRST BRUSHLESS SMART ROTARY TOOL PROVIDING SUPERIOR PERFORMANCE, USAGE INSIGHTS, PERFORMANCE ALERTS AND SPEED RECOMMENDATIONS. CONTROL: Find the right rotary accessory and speed for your project. Choose from over 170 combinations of materials, applications and accessories to get the most out of your Dremel rotary tool. Set the recommended speed right from the app. MONITOR: Your tool dashboard shows the exact battery % left in your 8260 and the amount of usage time (in minutes) left in your tool. See the tool and battery’s operating temperature using a green, yellow and red status indicator. MANAGE: Receive performance alerts and preventative tips for when your tool is overheating, overloading and when your battery is low. View your alerts and tips in an Alert Center. BLUETOOTH PAIRING: Quickly connect your 8260 to your app with a guided pairing process. An 8260 can be paired to many smart devices but will only be allowed to be actively paired to one device at a time. Add multiple 8260 rotary tools to one device. CUSTOM NAME: Give your tool a unique and personalized name in the app. ADDITIONAL FEATURES FOR DREMEL TOOL OWNERS ACCESSORY GUIDES: Explore the hundreds of Dremel Accessories for Rotary Tools, Oscillating, Compact Saws and Versa Power Cleaning tools with handy interactive accessory guides. MATERIAL GUIDE for Rotary Tools: Find the right accessory and speed recommendations for your Rotary Tool based on 9 popular materials (Softwood, Hardwood, Steel, Plastic/Laminates, Aluminum/Brass, Ceramic, Shell/Stone, Glass and Drywall). Explore over 50 accessory types intended to perform a variety of applications (Carving/Engraving, Routing, Grinding/Sharpening, Cutting, Cleaning/Polishing, Sanding, Drilling, Grout Removal) SIMPLE SUPPORT: Reach Dremel customer support by phone or email quickly and easily.
Screenshots
Verdict
The clearest difference is rating: Z21Updater at 5.0 against Dremel's 4.4. Z21Updater also leads on review sentiment (50% vs 21%) and iOS requirement (13.4 vs 18.0). Dremel's advantage is update cadence (every 2 months vs every 28 months) and ratings volume (19 vs 1). On price, ads, in-app purchases and monetization model 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.
Z21Updater holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Dremel has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Z21Updater's written reviews are positive against 21% of Dremel's.
Z21Updater ships an update every 28 months, Dremel every 2 months. Both last shipped on October 24, 2026.
| Parameter | Z21Updater | Dremel |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.4 (19 ratings) |
| Positive reviews | 50.0% of reviews — better | 21.4% of reviews |
| Number of ratings | 1 | 19 — better |
| Update frequency | Every 28 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 29 MB | 193 MB |
| Age rating | 4+ | 4+ |
| Developer | Modelleisenbahn GmbH | Bosch US |
Customer experience
Z21Updater
Dremel
In-app purchases
Z21Updater
No in-app purchases
Dremel
No in-app purchases









