CallGuard vs Nextcloud Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CallGuard
This app blocks unwanted calls at the system level before your phone rings. You create custom blocking rules for exact numbers, ranges, or prefixes, with advanced features like visual range editing and overlap detection. Your contacts are always protected, and all data processing is local for maximum privacy.
- System-level call blocking
- Customizable blocking rules
- Visual range editor
- Contact protection
- Overlap detection
- iCloud sync
- Statistics dashboard
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CallGuard blocks unwanted calls at the system level using Apple's Call Directory Extension — before your phone even rings. YOU DECIDE WHAT TO BLOCK No pre-loaded spam lists. You create your own rules and only numbers you add are blocked. Nothing happens automatically. BLOCKING OPTIONS • Exact Number — Block a specific phone number • Range — Block all numbers within a range • Prefix — Block all numbers starting with a prefix KEY FEATURES • Visual Range Editor — Drag handles to adjust ranges with real-time feedback • Contact Protection — Your contacts are never blocked, even within a range • Overlap Detection — See which rules overlap and total numbers blocked • Capacity Tracking — Stay within Apple's 100K limit with visual indicators • Smart Auto-Sync — Rules sync automatically with intelligent debouncing • Sync Status — See exactly which rules are synced and which need updating • iCloud Sync — Optionally sync your rules across all your devices • Statistics Dashboard — Charts showing blocking activity and sync history • Live Activity — Track sync progress in Dynamic Island and Lock Screen PRIVACY • No account required • No data leaves your device • All processing is local • iCloud sync is optional and off by default Available in English, French, German, Spanish, and Chinese.
Nextcloud Calendar
Manage your Nextcloud calendars with a simple mobile app. View, create, and organize events with real-time synchronization across multiple instances. Supports creating meetings with video conference links.
- Automatic calendar detection
- View, create, and manage events
- Real-time synchronization
- Multi-account support
- Create meetings with video conference links
- Switch between multiple Nextcloud instances
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Manage your Nextcloud calendars from a mobile app designed to keep things simple. Nextcloud Calendar automatically detects the calendars available on your instance and lets you easily view, create, and organize your events. Changes are synced in real time to keep your schedule up to date, whether you use one or multiple Nextcloud instances. Key features: • Automatic calendar detection • View, create, and manage events • Real-time synchronization • Multi-account support • Create meetings with video conference links via Nextcloud Talk Using multiple Nextcloud servers? Add your accounts and easily switch between instances. If Nextcloud Talk is enabled on your instance, you can generate a video conference link directly from the app and attach it to your event. Nextcloud Calendar is designed for users, teams, and organizations that want mobile access to their Nextcloud calendars through a clear, modern experience built for everyday use. A compatible Nextcloud instance is required. Some features may depend on your server configuration and the apps enabled by your administrator.
Screenshots
Verdict
The clearest difference is price: Nextcloud Calendar at Free against CallGuard's $4.99. Nextcloud Calendar also leads on iOS requirement (16.4 vs 18.0). On review sentiment, update cadence, 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
Nextcloud Calendar is free to download; CallGuard costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
CallGuard ships an update every 9 days, Nextcloud Calendar every 2 weeks. Both last shipped on October 31, 2026.
| Parameter | CallGuard | Nextcloud Calendar |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | — | 4.7 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 4 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexis Creuzot | Soluce Technologies |
Customer experience
CallGuard
Nextcloud Calendar
In-app purchases
CallGuard
No in-app purchases
Nextcloud Calendar
No in-app purchases
Questions
Is CallGuard free?
Is Nextcloud Calendar free?
Do CallGuard or Nextcloud Calendar have ads?
Which is updated more often, CallGuard or Nextcloud Calendar?
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