Zadarma vs smrtPhone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zadarma
This VoIP app allows you to make and receive calls and SMS using a virtual number and PBX. It offers features like call transfer, recording, and an AI voice agent to automate incoming calls. Seamlessly integrate with CRM and ERP systems for enhanced business communication.
- Virtual numbers and PBX
- Call transfer
- Call recordings
- SMS messaging
- AI Voice Agent
- CRM integration
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Zadarma is a simple and reliable VoIP app for making and receiving calls and SMS. Get a virtual number and PBX in one app, right on your mobile! Stay connected wherever you are with high-quality calls and affordable rates. Key Features: - Virtual numbers & PBX – get a virtual number in 110 countries and connect to your PBX directly in the app. - Call transfer – easily transfer calls to colleagues or other numbers. - Call recordings – listen to recorded calls right in the app. - SMS messaging – send and receive texts easily. - AI Voice Agent – automate incoming calls with an AI assistant that can answer questions, use your knowledge base, and transfer calls to your team when needed. Need more? Get a free Teamsale CRM already integrated with our telephony, plus seamless integration with all popular CRM and ERP systems. Zadarma also offers call tracking, website widgets, speech analytics, and more to boost your business. Learn more at zadarma.com!
smrtPhone
This mobile app integrates your cloud-based phone system with your CRM, enabling seamless calling, texting, and contact management from your device. It logs all communication, allows for call notes, and offers advanced sales features to accelerate your sales cycle and enhance customer relationships.
- CRM contact list sync
- SMS/MMS messaging with CRM logging
- Call logging and recording
- In-call notes sync
- Call disposition tracking
- Multiple Caller ID options
- Text and voicemail inbox access
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smrtPhone is a full featured, cloud based phone system that allows you to make more calls, send more texts, and close more deals. With smrtPhone, your phone system becomes a fully integrated part of your CRM, accelerating your sales cycle, and improving customer relationships. With no forced long-term contracts, a powerful 4-line auto-dialer, advanced Pro features, and pay-as-you-go pricing, smrtPhone is the clear choice for sales-driven businesses. Now you can bring power of smrtPhone to your mobile device. Use the smrtPhone Mobile App to: > Sync your full CRM contact lists so every contact is available from your handheld device > Send text messages (SMS and MMS) to any contact and have it automatically log in your CRM > Make and receive calls and have call data effortlessly tracked, including call recordings > Take notes during/after your call and have them automatically sync to the contact record > Choose from existing call dispositions to mark call outcomes and trigger CRM automations > Easily switch between phone number Caller IDs to ensure you call from the correct phone line > Access your text and voicemail inboxes for individual users and groups > Sync call information (including recent call logs) across platforms, web and mobile IMPORTANT: smrtPhone’s mobile app requires an existing smrtPhone account. DISCLAIMERS: Call quality can be affected by the strength of your internet/4G/5G/LTE connection. Please ensure you have a strong signal or internet connection to achieve best results. Emergency calling may not be available for your number or region.
Screenshots
Verdict
The clearest difference is rating: smrtPhone at 4.6 against Zadarma's 3.3. smrtPhone also leads on update cadence (fortnightly vs every 2 months) and ratings volume (1.4K vs 69). Zadarma's advantage is monetization model (free vs free with in-app purchases) and review sentiment (41% vs 25%). 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.
smrtPhone holds the better App Store score, 4.6 against 3.3. That said, the two scores are not equally well evidenced: smrtPhone has 1.4K ratings behind it against 69, so its average is the more settled of the two. Written reviews complicate that: 41% of Zadarma's written reviews are positive against 25% of smrtPhone's, so the app with the better star average is not the one people write more warmly about.
Zadarma ships an update every 2 months, smrtPhone fortnightly. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.
| Parameter | Zadarma | smrtPhone |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (69 ratings) | 4.6 (1.4K ratings) — better |
| Positive reviews | 41.0% of reviews — better | 24.5% of reviews |
| Number of ratings | 69 | 1.4K — better |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 84 MB | 54 MB |
| Age rating | 4+ | 17+ |
| Developer | Zadarma Project | smrtStudio Global Inc. |
Customer experience
Zadarma
smrtPhone
Bugs and requests
Zadarma
Not enough reviews yet to summarise bugs or requests.
smrtPhone
Reported bugs
4 issues- Constant log-outs and sign-in issues
- Incorrect caller ID information
- Inability to adjust notification settings
- Syncing and integration problems with Podio
Requested features
4 requests- Add group messaging capability
- Improve contacts management and search
- Allow image/file sharing from website
- Enhance notification and call handling
In-app purchases
Zadarma
No in-app purchases
smrtPhone
No in-app purchases









