MARLVEL

String — Modern Phone Inbox vs its rivals

Side-by-side comparison against String — Modern Phone Inbox's closest competitors — identity, store metrics, ratings & sentiment, and strategic intel.

String — Modern Phone Inbox
This App
Quo (formerly OpenPhone)
Nemesis
Dialpad
Contender
SimpleTexting
Contender
RingCentral Events
Peer
Salesforce
Peer
HubSpot
Peer
Grasshopper
Peer
Heymarket Texting for Teams
New Kid
Core Identity
DeveloperNumberBarn, LLCOpenPhone Technologies IncDialpad, Inc.Made Simple Ventures LLCRingCentral, Incsalesforce.comHubSpot, Inc.GrasshopperCommon Sun, Inc
CategoryBusinessBusinessBusinessBusinessBusinessBusinessBusinessBusinessBusiness
PlatformiOS, AndroidiOS, AndroidAndroid, iOSiOS, AndroidiOS, AndroidiOS, AndroidiOS, AndroidAndroid, iOSiOS
Store Metrics
Rating3.5 / 54.4 / 54.6 / 54.7 / 53.4 / 54.8 / 54.7 / 54.8 / 53.3 / 5
Ratings Count6110,6614,4773,21577342,62214,77045,64150
PriceFreeFreeFreeFreeFreeFreeFreeFreeFree
Release DateApr 12, 2019Sep 22, 2017Oct 14, 2014Aug 2, 2018Mar 5, 2021Nov 22, 2010Apr 27, 2016Feb 19, 2013Nov 25, 2015
Last UpdatedFeb 4, 2026Apr 13, 2026Apr 13, 2026Apr 29, 2026Mar 24, 2026Apr 21, 2026Apr 17, 2026Apr 17, 2026May 10, 2026
Sentiment & Reviews
Sentiment-----positive---
Score-----75/100---
Praises-----
  • Highly customizable CRM workflows allow businesses to tailor the interface to specific operational requirements
---
Complaints-----
  • Inconsistent user interface design compared to browser versions creates navigation friction for mobile users
---
Requests-----
  • Automatic data synchronization capabilities are needed to support work in low network connectivity environments
---
Strategic Intel
Strengths
  • Landline text-enablement creates high switching costs for legacy businesses
  • Kanban-style inbox organization reduces operational friction for solo users
--
  • Text-to-landline capability lowers switching costs for legacy businesses
  • Threaded inbox design centralizes customer support workflows
-
  • Agentforce conversational automation creates high enterprise-grade switching costs
  • Low-code Mobile Builder reduces implementation friction for enterprise clients
  • Offline-first homepages secure consistent field-service retention
--
  • Shared inbox architecture enables collaborative team-based message management
  • Cross-platform synchronization between mobile and web interfaces ensures team continuity
Weaknesses
  • 3.5★ rating baseline lags behind modern communication standards
  • Absence of native team-collaboration tools limits enterprise adoption
--
  • Manual contact list management creates high friction
  • Subscription model lacks integration with common CRM platforms
-
  • 0.99★ Android-iOS rating gap indicates platform-specific instability
  • Persistent white-screen crashes during active use
  • Mobile-desktop UI parity friction limits power-user efficiency
--
  • $49.99/month starting price exceeds category median for small-team tools
  • Lacks native payment processing for direct transactional revenue collection
Pricingfreemiumsubscriptionfreemiumsubscriptionfreesubscriptionfreemiumsubscriptionsubscription
MomentumActiveIntenseIntenseMaintenanceIntenseIntenseIntenseIntenseMaintenance
Update Cadence5 versions5 versions5 versions2 versions, ~9d avg5 versions5 versions, ~7d avg5 versions5 versions1 versions

Compare String — Modern Phone Inbox head-to-head

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by String — Modern Phone Inbox, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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Data licensed under CC-BY-NC 4.0