CooCall vs The String
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CooCall
This app allows users to take their office phone extension with them anywhere. Make and receive calls using your office system from cafes, airports, or abroad. It synchronizes with your enterprise phonebook and offers personalized ringtones.
- Mobile office extension
- Inbound and outbound calls
- QR code registration
- Enterprise phonebook sync
- Personalized ringtones
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CooCall is a softphone APP dedicated for ZYCOO CooVox series IP phone system. By using CooCall you may bring your office extension wherever you want. No matter in a cafe, airport, and even abroad, you'll never miss any inbound calls from the office phone system. And you may make outbound phone calls using the office phone system as well. Features: Scan QR code to register extension number. Enterprise phonebook and extension list synchronization. Personalized ring tones.
The String
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String — Leads & Conversations in One Place Manage every lead, chat, and opportunity directly from your phone — no missed messages, no lost deals. String App helps businesses and teams manage marketing leads, WhatsApp messages, and social conversations in one unified inbox. Whether you run a clinic, a car dealership, or an online store, String keeps your team connected with every customer — instantly. Key Features: Leads Management — Receive new leads from all your ad campaigns (Meta, TikTok, Snapchat, Google, and more) in real time. Unified Inbox — Manage all your customer messages from WhatsApp, Instagram, Facebook, and other channels in one place. Quick Replies — Respond instantly with pre-set templates and smart reply suggestions. Smart Notifications — Get instant alerts for new leads, unread messages, or customer replies. Team Collaboration — Assign leads to team members, track progress, and measure response time. Lead Status & Notes — Update lead stages and leave notes to keep everyone aligned. Insights & Reports — Monitor your campaigns and measure conversion results anytime. Why String? Designed for Arabic-speaking businesses across MENA. Built for clinics, car dealerships, and e-commerce teams. Fully integrated with WhatsApp Business API, Meta, and TikTok Lead Forms. Works seamlessly with your existing campaigns and CRM. With String, your marketing and sales teams can finally work together — faster, smarter, and in real time. Start automating your leads today — wherever you are.
Screenshots
Verdict
The clearest difference is iOS requirement: CooCall at 13.0 against The String's 15.0. 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.
CooCall ships an update fortnightly, The String monthly. The most recent releases landed on June 5, 2026 and September 14, 2026 respectively.
| Parameter | CooCall | The String |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 10 MB | 52 MB |
| Age rating | 17+ | 4+ |
| Developer | ZYCOO CO.,LTD | The String |
In-app purchases
CooCall
No in-app purchases
The String
No in-app purchases









