CoolSpeed vs Vacci Dropper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CoolSpeed
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Official app to use with WTO CoolSpeed® MAX high-speed spindles and WTO Bluetooth pressure gauges for turbine-driven CoolSpeed® high-speed spindles. The app displays the current speed, vibration, temperature and coolant pressure of the high-speed spindles. More functions: - The CoolSpeed® calculator supports the optimum use of CoolSpeed® high-speed spindles - Display of power in watts
Vacci Dropper
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The Vacci Dropper app allows for fine-grain control over the Vacci Dropper device.
Screenshots
Verdict
The clearest difference is update cadence: CoolSpeed at every 2 weeks against Vacci Dropper's every 2 months. CoolSpeed also leads on device support (3 vs 1) and iOS requirement (14.2 vs 16.0). On price, ads and in-app purchases 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.
CoolSpeed ships an update every 2 weeks, Vacci Dropper every 2 months. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.
| Parameter | CoolSpeed | Vacci Dropper |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.2 — better | 16.0 |
| Further details — not scored | ||
| Size | 114 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | WTO Werkzeug-Einrichtungen GmbH | Colorado State University |
In-app purchases
CoolSpeed
No in-app purchases
Vacci Dropper
No in-app purchases
