Comparison

Tello Messenger vs Zerogram

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Tello Messenger

An all-in-one messaging platform offering secure text, image, and voice messaging, alongside HD voice and video calls. It facilitates group chats, team collaboration, and community building with features like AI assistance and self-destructing messages.

Highlights
  • Advanced messaging (text, images, voice notes)
  • HD voice and video calls
  • Group chats and team collaboration
  • End-to-end encryption
  • Customizable interface
  • AI assistant and smart bots
  • Public groups and community features
Features
Read full description

TELLO - Where Conversations Happen Welcome to TELLO, your all-in-one messaging platform for smart, seamless, and secure communication. Key Features: - Advanced Messaging: Send text messages, high-quality images, and voice notes quickly and reliably. - Voice and Video Calls: Enjoy HD call quality with stable and clear connections worldwide. - Group Chats and Team Collaboration: Create group chats for friends, family, or work. Share files and manage tasks easily. - End-to-End Encryption: All chats, calls, and files are protected with strong encryption. - Customizable Interface: Choose themes, backgrounds, and sounds to make TELLO your own. - AI Assistant and Smart Bots: Manage your schedule, get reminders, and more directly within your chats. - Public Groups and Community: Join groups by interest or industry. Share ideas and grow your network. Privacy and Safety: - Self-Destruct Messages: Send confidential information with messages that auto-delete. - Spam Protection and Verified Users: Stay safe with advanced spam filters and user verification. - Parental Controls: Set limits and filters to protect younger users. Download TELLO now and transform the way you connect and collaborate.

About

Zerogram

This is a free, independent Telegram client designed for blind and low-vision users. It offers full compatibility with screen readers, allowing seamless communication through chats, groups, and channels.

Highlights
  • Screen reader compatibility
  • Secure login
  • Full chat functionality
  • Voice message recording
  • Media and document sharing
  • Message management
  • Customizable appearance
Features
Read full description

Zerogram — Accessible Telegram Client Zerogram is a completely free, independent Telegram client designed from the ground up for blind and low-vision users. It is built on Telegram's official open-source library (TDLib), so it works with your real Telegram account and your real chats. Why Zerogram? Full compatibility with the VoiceOver screen reader is the app's core design goal. Every button, every message, every screen is crafted with clear labels, hints, and rotor actions. Messages are read as "who, when, what" with a single tap; voice messages are announced with their duration, and play, pause, and seek are offered as rotor actions. Key features: - Secure login with phone number and two-step verification - Full communication with chats, groups, channels, and bots - Record and send voice messages (tap or press-and-hold) - Send photos, videos, and documents; open documents inside the app - React to, reply to, edit, and forward messages - Search people across your chats and Telegram's public directory - Notifications, mute, archive, pin - Dark theme, adjustable text size, chat wallpapers - 7 languages: Turkish, English, German, Spanish, Italian, Arabic, French Your privacy comes first. Zerogram collects no data from you; all your communication happens directly with Telegram's servers over the same infrastructure. No ads, no tracking, no middleman. Zerogram is developed by Meriç Karaca, in the belief that everyone deserves to communicate equally.

Screenshots

Tello Messenger4 screens
Zerogram3 screens

Verdict

The call

The clearest difference is rating: Tello Messenger at 5.0 against Zerogram's 4.0. Zerogram's advantage is update cadence (every 2 days vs every 3 weeks) and ratings volume (7 vs 2). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Tello Messenger holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively.

UpkeepUpdate frequency

Tello Messenger ships an update every 3 weeks, Zerogram every 2 days. The most recent releases landed on October 3, 2026 and September 24, 2026 respectively.

Scorecard3 real differences · 7 level
Tello Messenger versus Zerogram: the parameters behind the verdict, then further details
ParameterTello MessengerZerogram
PriceFreeFree
Rating5.0 (2 ratings) — better4.0 (7 ratings)
Positive reviews—33.3% of reviews
Number of ratings27 — better
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod — betteriPhone
Requires iOS1616.0
Further details — not scored
Size43 MB189 MB
Age rating17+17+
DeveloperEVER SUCCEEDED GLOBAL TLD, INC.MERIC KARACA

Customer experience

Tello Messenger

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Zerogram

All ratings7 ratings
Positive57.1%
Neutral28.6%
Negative14.3%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

In-app purchases

None

Tello Messenger

No in-app purchases

None

Zerogram

No in-app purchases

Questions

Is Tello Messenger free?
Tello Messenger is free to download, with no in-app purchases.
Is Zerogram free?
Zerogram is free to download, with no in-app purchases.
Which has better reviews, Tello Messenger or Zerogram?
Tello Messenger is rated higher. Tello Messenger averages 5.0 out of 5 from 2 ratings, while Zerogram averages 4.0 from 7 ratings.
Do Tello Messenger or Zerogram have ads?
Neither Tello Messenger nor Zerogram shows ads.
Which is updated more often, Tello Messenger or Zerogram?
Tello Messenger ships an update every 3 weeks, and Zerogram every 2 days. Most recently, Tello Messenger was updated on October 3, 2026 and Zerogram on September 24, 2026.

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