OV2 Alarm vs SpoolTool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OV2 Alarm
Manage your OV2 security system directly from your smartphone. Arm, disarm, and control users, accessories, and sensors without monthly fees. Offers cloud-based recording plans for enhanced security.
- Remote system management
- Arm and disarm functionality
- User, accessory, and sensor control
- Cloud-based recording plans
- No monthly fees for core management
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With this free app securely linked to your OV2 unit, you get to manage the entire system with ease, and change system states or settings such as arm, disarm, and add/remove users, accessories and sensors directly on your smartphone, without any headaches or monthly fees. Statement for the Auto-Renewable Cloud-Based Recording Plans 1. Payment: Auto-renewable subscriptions include “Basic Monthly / Basic Annually / Premium Monthly / Premium Annually”. Payment will be charged to your Apple ID account at the confirmation of purchase. 2. Auto-renewal: Your account will be charged for renewal within 24-hours prior to the end of the current period. 3. Cancel subscription: The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. 4. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. 5. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Terms of Use: http://www.chuango.com/privacypolicy/Terms_and_Conditions.html Privacy policy: http://www.chuango.com/privacypolicy/Privacy.html
SpoolTool
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SpoolTool is a clean and easy-to-use app for tracking your 3D printing filament en accessories. Keep an overview of your filament spools, materials and remaining weight and accessories, so you always know what you have available before starting a print. Key features: • Track filament spools and remaining weight • Support for common materials like PLA, PETG and TPU • Stock inventory • Accessory inventory • Simple and distraction-free interface • iCloud synchronization SpoolTool+ (optional in-app purchase): • Unlock additional filament materials • Unlock all accessories • Add more brands and detailed filament information • Enable cost calculation features • Configure spool stock locations SpoolTool does not require an account and does not collect personal data. App data can be stored securely using iCloud when enabled on your device. Built with focus on simplicity, privacy and ease of use.
Screenshots
Verdict
The clearest difference is update cadence: SpoolTool at weekly against OV2 Alarm's every 4 months. OV2 Alarm's advantage is iOS requirement (9.0 vs 26.0). 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. OV2 Alarm sells 4 in-app purchases, starting at $2.99 per month and SpoolTool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
OV2 Alarm ships an update every 4 months, SpoolTool weekly. The most recent releases landed on September 25, 2026 and October 10, 2026 respectively.
| Parameter | OV2 Alarm | SpoolTool |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 151 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Chuango Security Technology Corporation | Luc Janssen |
In-app purchases
OV2 Alarm
- Basic Monthly$2.991 Month
- Premium Monthly$6.991 Month
- Basic Annually$29.991 Year
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- Premium Annually$69.991 Year
SpoolTool
- SpoolTool+$1.99









