Kasookoo vs Rivalzz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kasookoo
This business phone system app liberates users from traditional phone line costs and constraints. It offers features like a virtual receptionist, conference calling, and call tagging directly on a smartphone.
- Virtual receptionist
- Conference calling
- Call tagging
- Customizable caller ID
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Kasookoo - the business phone system that runs through an app on your smartphone - liberate yourself from the costs and constraints of physical phone lines, desk phones, and business mobiles. You will then have access to all the features of the app, including: - Virtual receptionist - route calls to the right members of the team - Conference calling - add and remove people from your calls - Add tags - identify the number your customer is calling - Make primary - choose the number from which to call from
Rivalzz
Make free HD calls and send messages to contacts worldwide. Share files, photos, and voice messages easily across different operating systems. Earn credit by inviting friends and family.
- Free HD calls worldwide
- Smart Contacts for free communication
- Cross-platform file, photo, and voice message sharing
- Call any number globally
- Earn credit by referring friends
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Why Rivalzz? • Simple, free HD calls to loved ones across the globe. • Smart Contacts to see other Rivalzz Contacts who you can call and message for free. • File Transfer for simple file, photo and voice message sharing across operating systems - for free. • Call from any phone to any number around the world • Earn credit by referring friends and family Coming soon. • Social media integration to make Rivalzz the one and only communications app you need. • Top Up mobiles around the globe with no hidden fee. Select users direct from your phone book.
Screenshots
Verdict
The clearest difference is rating: Rivalzz at 5.0 against Kasookoo's 4.3. Kasookoo's advantage is ratings volume (7 vs 2). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Rivalzz holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 7 and 2 respectively.
Kasookoo ships an update every 6 months, Rivalzz every 8 months. The most recent releases landed on September 15, 2026 and June 4, 2026 respectively.
| Parameter | Kasookoo | Rivalzz |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (7 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 7 — better | 2 |
| Update frequency | Every 6 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 36 MB | 97 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuave Ltd | Rivalzz Pty Ltd |
Customer experience
Kasookoo
Rivalzz
In-app purchases
Kasookoo
No in-app purchases
Rivalzz
No in-app purchases
