OKbase vs CallGuard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OKbase
This application allows current users of the OKbase time and attendance system to record their arrivals, departures, breaks, and other interruptions. It supports attendance tracking via NFC chips, home Wi-Fi network, or manual entry with automatic GPS coordinate logging. The system learns user habits to suggest the most frequent interruption types.
- Record arrivals and departures
- Log breaks and interruptions
- Track attendance via NFC
- Wi-Fi network-based check-in
- Manual entry with GPS logging
- Self-learning interruption suggestions
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Aplikace je určena současným uživatelům docházkového systému OKbase. Umožňuje zaznamenat odchod i příchod z pracoviště, přestávku, návštěvu lékaře či další přerušení. Umožňuje zaznamenat docházku zaměstnance přiložením k NFC čipů, evidencí v domovské Wi-Fi síti, nebo manuálně s automatickým záznamem GPS souřadnic. Systém je samoučící a nabízí uživatelům nejčastěji používaná přerušení. Pro přihlášení na server s více organizacemi zadejte uživatelské jméno ve formátu [[dataSource/]orgId/]username. Např. oksystem/novakj nebo dataSource1/oksystem/novakj
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.
Screenshots
Verdict
The clearest difference is review sentiment: CallGuard at 100% against OKbase's 0%. CallGuard also leads on update cadence (every 9 days vs every 6 weeks). OKbase's advantage is price (Free vs $4.99) and iOS requirement (15.0 vs 18.0). On 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
OKbase is free to download; CallGuard costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
OKbase ships an update every 6 weeks, CallGuard every 9 days. The most recent releases landed on October 13, 2026 and October 21, 2026 respectively.
| Parameter | OKbase | CallGuard |
|---|---|---|
| Price | Free — better | $4.99 |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Update frequency | Every 6 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 31 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | OKsystem a.s. | Alexis Creuzot |
Customer experience
OKbase
CallGuard
In-app purchases
OKbase
No in-app purchases
CallGuard
No in-app purchases









