ContactBoss vs ClientWindow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ContactBoss
Read full descriptionHide full description
Manage your contact data on our Contact Boss mobile app! Away from your desk? On the go? Now you can take control of your Contact Boss contacts from anywhere, with our new mobile app. Search, sort and reach out to contacts, all from your mobile device. Search - Contact Boss’s superior search function works just as well on your mobile phone, it’s lightning fast and delivers the results you’re looking for! Sort - Need to make a list of all your suppliers, or refresh your memory of the names of your board members? Our mobile app will sort your contact data according to your needs! Connect directly by email or phone - What a time saver! You searched and sorted and now you need to reach out to clients or employees while you’re on the road or away from your laptop or desktop. The Contact Boss mobile app lets you dial direct, or send emails right from the app - now that’s convenient! Check comments - Have you forgotten the details about one of your contacts, just as you are heading into a meeting? Take a quick glance at their contact listing on your mobile phone, and you will be completely up-to-date and well-prepared! Add new contacts – Just use our streamlined “Quick Create” feature to capture new contacts on your mobile!
ClientWindow
Streamline customer communication by integrating WhatsApp and other chat messages with the searchability and security of email. Offers professional messaging, in-app chat, and document sharing for enhanced business interactions.
- WhatsApp messaging integration
- In-app chat features
- Document sharing
- Searchable communication history
- Enhanced security
Read full descriptionHide full description
Communicate with customers on WhatsApp and the chat messaging features they prefer, but with the search, security & retrieval benefits of traditional email. - Professional WhatsApp messaging integration - Convenient in-app chat features - Curated in-app Document Sharing
Screenshots
Verdict
The clearest difference is update cadence: ClientWindow at fortnightly against ContactBoss's every 4 months. ContactBoss's advantage is iOS requirement (13.4 vs 15.0). 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. Neither carries in-app purchases, so what you see is what you pay.
ContactBoss ships an update every 4 months, ClientWindow fortnightly. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.
| Parameter | ContactBoss | ClientWindow |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 19 MB | 15 MB |
| Age rating | 4+ | 17+ |
| Developer | Contacts-DB Inc. | Orange Shark Limited |
In-app purchases
ContactBoss
No in-app purchases
ClientWindow
No in-app purchases
Questions
Is ContactBoss free?
Is ClientWindow free?
Do ContactBoss or ClientWindow have ads?
Which is updated more often, ContactBoss or ClientWindow?
Other comparisons
