STARFACE vs Castell Monteur
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STARFACE
This business communication app integrates instant messaging, voicemail, video chat, and faxing with your phone system. Manage calls, contacts, and messages from a unified interface, reducing mobile phone bills.
- SIP and GSM calling
- Instant messaging and chat
- Voicemail and fax integration
- Call management and forwarding
- Access to STARFACE address book
- Favorites with BLF/Direct Dial Keys
- Unified communication journal
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The STARFACE Communications Hub for your iPhone. The STARFACE Apps combine powerful high-end business telephony with a seamless integration of instant messaging, voicemail, video chat, and faxing. These features are also available for your iPhone. The STARFACE Apps bundle all communication channels on your smartphone and turn it into the innovative and modern communications center of your STARFACE telephone system. The Journal keeps you up to date with everything that happens. Who sent you a chat message? Who called you and left a message on your voicemail? You can see everything concerning your STARFACE account. Your STARFACE Function Keys (BLFs) are also available right on your mobile phone, as are instant messaging and the STARFACE address book. The integrated call manager gives you access to a wide selection of functionality and ease-of-use features such as call brokering (toggling), call forwarding and inquiry hold. The STARFACE App for iOS works over LTE and Wi-Fi and directly reduces your mobile phone bill. Features: Calling • SIP calls • GSM calls • Call-Back by STARFACE PBX • Call-Through with module installed on STARFACE • Toggle between calls • Blind Transfer / Attended Transfer • Ad-hoc conference calls Contacts • Favorites (Busy Lamp Fields and Direct Dial Keys) • Access to local contacts • Access to address book hosted on STARFACE PBX Function Keys Instant messaging • Chat with users on the same STARFACE PBX system • Definition of Chat status und status text Journal • Displays all missed events • Separate lists for calls, voicemails, faxes, and chat messages • Filter by type • Call list filter by group Status • Enable/disable iFMC • Enable/disable redirections • Enable/disable DND Settings • Encryption • Standard call method • Enable/disable phone features • Enable/disable chat features Your forum for feature requests and ideas: https://support.starface.de/forum/board/65-starface-vorschlagsportal/ System Requirements • Apple iPhone with iOS 16 or later • A STARFACE PBX (Version 8.0 or higher) • For full functionality incl. SIP telephony, a STARFACE App Premium Licence on the STARFACE PBX is required for the particular user. • STARFACE App Premium license on the STARFACE PBX for full functionality, including SIP telephony • An active and functional SIM card inserted in the device • A stable internet connection (mobile and/or Wi-Fi). Note: Some features may require stable mobile internet connection. www.starface.com
Castell Monteur
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Castell Monteur ist die Arbeits-App der Faber-Castell Energy GmbH. Sie ist für unsere Beschäftigten und für Personen gemacht, die in unserem Auftrag auf unseren Baustellen arbeiten. Die App ist kein öffentliches Angebot. Ohne Zugangsdaten, die wir vergeben, ist keine Nutzung möglich. WAS DIE APP KANN Arbeitsbeginn und Feierabend mit einem Tipp buchen, dazu Fahrzeiten und Pausen. Den heutigen Einsatzort und die Arbeitsaufträge für den Tag ansehen. Material auf der Liste abhaken, während man es einlädt. Tagesberichte schreiben oder diktieren, mit Fotos von der Baustelle. Pläne und Unterlagen ansehen und mit dem Stift markieren. Urlaub beantragen und den eigenen Stundenstand sehen. Baustellenfunk: kurze Nachrichten zwischen Baustelle und Büro. DREI SPRACHEN Deutsch, Polnisch und Englisch. Jeder schreibt in seiner Sprache und liest in seiner eigenen. STANDORT Beim Arbeitsbeginn und beim Feierabend wird einmal der Standort gespeichert. Er dient dem Nachweis, dass die Zeit auf der Baustelle gebucht wurde, zu der sie gehört. Eine laufende Ortung findet nicht statt, und es entstehen keine Bewegungsprofile. Wer die Ortung ablehnt oder keinen Empfang hat, bucht seine Zeit trotzdem, dann eben ohne Ortsangabe. Faber-Castell Energy GmbH, Griestal 22, 87733 Markt Rettenbach
Screenshots
Verdict
The clearest difference is update cadence: Castell Monteur at every 5 days against STARFACE's every 2 months. Castell Monteur also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). 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.
STARFACE ships an update every 2 months, Castell Monteur every 5 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | STARFACE | Castell Monteur |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 64 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | STARFACE GmbH | Faber-Castell Energy GmbH |
In-app purchases
STARFACE
No in-app purchases
Castell Monteur
No in-app purchases







