SessionTalk SIP Softphone vs MizuPhone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SessionTalk SIP Softphone
This app brings your business SIP account to your mobile device, offering voice calling, messaging, and video. An optional upgrade unlocks advanced features like call recording, multiple accounts, and enhanced security.
- SIP voice calling
- XMPP chat and messaging
- Video calling
- Multiple SIP account management
- Call recording
- ZRTP audio encryption
- Push notifications
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Your business number. Your iPhone. Your way to stay in touch. SessionTalk SIP Softphone brings your compatible SIP account to iPhone and iPad, with a clear dialler, quick access to contacts and calling tools for working from anywhere. Start with SIP voice calling. Unlock the optional one-time Business upgrade for push notifications, video calling, messaging and XMPP, presence, multiple SIP accounts, call transfers, conference merging, call recording and ZRTP audio encryption. The messaging screenshots show features available with this upgrade. CALL WITH CONFIDENCE • Make and receive SIP calls over Wi-Fi and mobile data. • Find people quickly with contacts, favourites and call history. • Use Bluetooth, speakerphone, mute, hold and voicemail notifications. • Enjoy clear audio with Opus, G.722 and G.711 support. MORE WAYS TO KEEP IN TOUCH • Share messages with XMPP chat and compatible SIP messaging services. • Keep conversations organised with contact avatars and group chat rooms. • Share images and files in supported messaging conversations. • Stay reachable with incoming-call push notifications and background XMPP message delivery. TOOLS FOR YOUR WORKDAY • Manage multiple SIP accounts in one app. • Transfer calls, bring people together in conferences and record calls. • Use video calling with a compatible provider. • Support for TLS and SRTP when enabled by your service. • ZRTP audio encryption requires the Business upgrade. Purchase or restore it in Premium Features. • Compare the on-screen security code with the other caller to verify a ZRTP call. • See your call encryption type and ZRTP verification status during calls. • ZRTP requires a compatible peer and media path and supports audio only. Video is unavailable while ZRTP is enabled. BRING YOUR OWN SERVICE SessionTalk is a softphone, not a phone service. A compatible SIP account or PBX is required for calling. XMPP messaging requires a compatible XMPP account. SIP messaging, video, push and other features depend on your provider and configuration. Provider calling charges and mobile data charges may apply. Need help? Contact support@sessiontalk.co.uk.
MizuPhone
This application allows users to make and receive VoIP calls and chat over various internet connections. It supports multiple VoIP providers and offers advanced PBX features for seamless communication.
- VoIP calls and chat
- Supports any connection (GPRS to 5G)
- SIP over UDP, TCP, and TLS
- Push notifications
- CallKit integration
- Multiple VoIP codecs with echo cancellation
- PBX features (hold, transfer, conference)
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Call your friends on VoIP. MizuPhone is a free customizable SIP softphone that lets you call your friends using any VoIP provider. Type your VoIP provider server address in “Server” input box, your SIP account Username and Password, and you're ready to go. Supported features: -Initiate and receive VoIP calls and chat over any connection above 15 kbits (GPRS, EDGE, WiFi, 3G, 4G, 5G) -SIP over UDP, TCP and TLS -Push notifications for always availability -CallKit native call integration -All the popular VoIP codec's are supported with echo cancellation including G.729 and OPUS wideband -PBX features such as DTMF, hold, transfer, conference, caller-id, call-wait, credit and rating display -A list of SIP related RFC’s and call-control features -Integration with server API such as new user registration, callback, SMS and others -Optional branding and customization
Screenshots
Verdict
The clearest difference is rating: SessionTalk SIP Softphone at 4.4 against MizuPhone's 2.3. SessionTalk SIP Softphone also leads on update cadence (every 3 days vs every 2 months) and ratings volume (1K vs 3). MizuPhone's advantage is in-app purchases (none vs 2) and iOS requirement (9.0 vs 15.0). On price, review sentiment, ads 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. SessionTalk SIP Softphone sells 2 one-off in-app purchases. MizuPhone asks for nothing beyond the download.
SessionTalk SIP Softphone holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: SessionTalk SIP Softphone has 1K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 39% of SessionTalk SIP Softphone's written reviews are positive against 33% of MizuPhone's.
SessionTalk SIP Softphone ships an update every 3 days, MizuPhone every 2 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.
| Parameter | SessionTalk SIP Softphone | MizuPhone |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (1K ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 39.2% of reviews — better | 33.3% of reviews |
| Number of ratings | 1K — better | 3 |
| Update frequency | Every 3 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 65 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | SessionTalk Ltd | Mizutech |
Customer experience
SessionTalk SIP Softphone
MizuPhone
Bugs and requests
SessionTalk SIP Softphone
Reported bugs
4 issues- Incoming calls not working
- Calls dropping
- Connectivity issues
- Keypad not working properly
Requested features
4 requests- Scheduled DND mode
- Improved iPad support
- Video calling
- More codec support
MizuPhone
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SessionTalk SIP Softphone
- G.729 Annex A Codec$2.99
- Upgrade to Pro$6.99
MizuPhone
No in-app purchases
Questions
Is SessionTalk SIP Softphone free?
Is MizuPhone free?
Which has better reviews, SessionTalk SIP Softphone or MizuPhone?
Do SessionTalk SIP Softphone or MizuPhone have ads?
Which is updated more often, SessionTalk SIP Softphone or MizuPhone?
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