My Tello vs SLYNUMBER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
My Tello
Manage your mobile account and make calls over WiFi with this app. Access account details, check balances, view usage history, and contact customer service. Enjoy low international call rates and flexible plans.
- Account details at your fingertips
- Check remaining balance
- Call over WiFi internationally
- Order or upgrade plans
- Recharge credit or set Auto Recharge
- View bills and usage history
- Contact customer service
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Say hello with the “My Tello” app! You can have your account details at your fingertips, see your remaining balance, check rates for any destination or find answers to your questions. Use the app in the US while connected to the Tello network or over WiFi. When travelling in US or abroad, call over WiFi using the same balance. This way you can still carry your phone number anywhere in the world and enjoy the same low costs. Download the “My Tello” app for free and: * Check the balance for all your Tello products: Plans and Pay As You Go * Start calling in the US and abroad over WiFi at the same costs * Order any plan or upgrade/downgrade your existing plan * Recharge safe and easy or set up Auto Recharge to avoid running out of credit * Manage your account at a glance * View your Tello bills & usage history * Contact Customer Service directly inside the app Easy to use: 1. Download the “My Tello” app for free 2. Log in with your Tello phone number and Tello.com website password 3. Get direct access to your phone contacts 4. Start calling over WiFi 5. Run the “My Tello” app on multiple devices at once, iPhone and iPad. Not a Tello.com client yet? If you’re new to Tello, you will need to order a phone or bring your own device at: www.tello.com. As a Tello customer you will get: * Prepaid service, no contract commitment, pure freedom * Flexibility to Build Your Own Plan starting at $5 * Lowest Pay As You Go rates for international calls and texts * The option to keep your old phone number & cell phone * Nationwide coverage * 24/7 Customer Service by email & phone * The same costs and the same phone number when calling over WiFi * Data tethering across all your devices for free *We value your opinion. Please let us know if you like our app! Having issues with the My Tello application? Please email us at customerservice@tello.com.
SLYNUMBER
Get a real, private mobile number for calls and texts without a carrier contract. Protect your personal information and separate your communications for business, dating, or travel.
- Real mobile numbers, not VoIP
- Unlimited inbound calls & texts
- 100 outbound credits monthly
- Privacy and anonymity
- Spam blocking & do-not-disturb
- AI-powered features
- eSIM for global data
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NOT TO BRAG, WE ARE THE BEST SLYNUMBER is not just another second number app. SLYNUMBER is the ONLY provider on the market to offer real mobile numbers. We don't provide VoIP, fake phone numbers, or second lines that only work for a week. This distinction is crucial because many apps and online services do not accept VoIP numbers. SLYNUMBER works everywhere! To put is simply - unless you're willing to sign up with a major carrier like T-Mobile, Verizon, or AT&T and commit to an expensive plan with a SIM card and monthly bills, we are your ONLY alternative for obtaining an actual mobile number. Moreover, we prioritize your privacy and anonymity, allowing you to share your number with strangers, clients, acquaintances, blind dates, or anyone else without the fear of being tracked or spied on. HOW SLYNUMBER WORKS Setting up SLYNUMBER is fast and easy! Simply, download the app onto your phone, pick your number and start calling and texting. SLYNUMBER can do everything your primary mobile number can but with added privacy and some really cool features. We offer the most reliable and fully featured virtual phone number app available, with calling & texting features that include free toll-free calls, blocking, muting, and do-not-disturb mode, caller name & ID settings, SlyAI (running on ChatGPT-4), call forwarding, and number porting. And now we also offer an eSIM feature that will allow you to activate cellular data anywhere in the world. We are you one-stop shop for all things mobile. Use it for: -Privacy & keeping your information safe -Separating personal and transactional numbers -Your business needs -Job applications -Traveling abroad -Communicating freely with spam blocking & muting -Setting boundaries with do-not-disturb settings -Online or in-person dating Your private phone number can be risky if it falls into the wrong hands. Our main protective measure is ensuring that SLYNUMBER does not gather any personal information apart from what is required for processing payments, which remains inaccessible. Using SLYNUMBER, you can establish barriers through features like spam call blocking and do-not-disturb settings to guarantee that you always have control over your communications. PLANS & PRICING SLYNUMBER is a subscription-based app, offering you two simple ways to enjoy a second mobile number & complete privacy that comes with it. 3-MONTH BASE PLAN: $4.99/mo (billed every 3 months at $14.99). The plan includes unlimited inbound calling and texting and 100 monthly outbound credits for calling and texting ANNUAL PLAN: $4.18/mo (billed annually at $49.99) The plan includes unlimited inbound calling and texting and 100 monthly outbound credits for calling and texting ADDITIONAL OUTBOUND CREDITS: 1000 credits for $10 (1 credit equals to 1-min call or 1 text message) SUBSCRIPTION DETAILS All subscriptions include unlimited inbound calls and texts, and 100 outbound credits (1 credit equals to 1-min call or 1 text message). If credits are used additional outbound credits may be purchased. Subscriptions automatically renew unless canceled. Subscriptions can be managed by the user through the app. For any further assistance, contact support@slynumber.com International calling rates vary based on the country you're calling. THE FINE PRINT Privacy Policy: https://slynumber.com/privacy-policy.html Terms of Use: https://slynumber.com/terms.html IMPORTANT: Please review our pricing before purchasing - SLYNUMBER has no free trial period. Outbound phone calls and text messages require an additional purchase of credits. Area code availability varies.
Screenshots
Verdict
The clearest difference is in-app purchases: My Tello at none against SLYNUMBER's 8. My Tello also leads on review sentiment (46% vs 33%) and iOS requirement (14.0 vs 17.0). SLYNUMBER's advantage is ads (none vs shown) and rating (4.5 vs 4.3). On price, ratings volume, update cadence and chart position 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. SLYNUMBER sells 8 in-app purchases, starting at $10.00 per year. My Tello asks for nothing beyond the download.
SLYNUMBER holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 1.9K and 2.6K respectively. Written reviews complicate that: 46% of My Tello's written reviews are positive against 33% of SLYNUMBER's, so the app with the better star average is not the one people write more warmly about.
My Tello ships an update every 3 weeks, SLYNUMBER every 2 weeks. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | My Tello | SLYNUMBER |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (1.9K ratings) | 4.5 (2.6K ratings) — better |
| Positive reviews | 46.4% of reviews — better | 33.3% of reviews |
| Number of ratings | 1.9K | 2.6K — better |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Best chart rank | #146 — better | #162 |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 37 MB | 96 MB |
| Age rating | 4+ | 4+ |
| Developer | Miron Enterprises, LLC | MobileSphere, Ltd |
Customer experience
My Tello
SLYNUMBER
User reviews
My Tello
From 1.9K App Store ratingsWhat we love
- 🚀 Excellent service and plans
- 👍 Easy to use app
- 💡 Customizable plans
- 🌐 Works well internationally
- 💰 Affordable prices
Room to improve
- 🐛 Buggy app with performance issues
- 🔍 Lack of transparency in data usage and plan details
- 🤖 Poor customer service and support
- 📵 Unreliable network coverage and connectivity
- 🔒 Security and account management concerns
SLYNUMBER
From 2.6K App Store ratingsWhat we love
- 🚀 Great value
- 💡 Useful for getting a second number
- 👍 Simple and straightforward app
- 🔒 Protects privacy and identity
Room to improve
- 🐛 App crashes and freezes
- 🔍 Lacks key features like sending pictures and videos
- 🤖 Poor customer support and unresponsive
- 💰 Expensive compared to alternatives
- 🚫 Numbers don't work with WhatsApp and other platforms
Bugs and requests
My Tello
Reported bugs
5 issues- App freezes and crashes
- Inability to log in or access account information
- Inaccurate data usage reporting
- Unreliable international roaming and WiFi calling
- Billing and payment processing issues
Requested features
5 requests- Ability to send and receive SMS/text messages through the app
- Improved app UI and user experience
- More detailed data usage tracking and notifications
- Seamless plan changes and account management
- Integration with other communication platforms (e.g., WhatsApp, Telegram)
SLYNUMBER
Reported bugs
4 issues- App won't load past the launch screen
- Incoming calls have no audio
- Text messages fail to deliver
- Subscription issues and inability to cancel
Requested features
4 requests- Add ability to send and receive pictures and videos
- Improve app stability and reduce crashes
- Provide better customer support and communication
- Offer more affordable pricing options
In-app purchases
My Tello
No in-app purchases
SLYNUMBER
- Global eSIM data plan$10.001 Year
- Three-Month Plan$14.993 Months
- Yearly Plan$49.991 Year
- SLYNUMBER eSIM$3.00
- 10 Dollar Credit Bundle$10.00
- 25 Dollar Credit Bundle$25.00
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- 50 Dollar Credit Bundle$50.00
- 100 Dollar Credit Bundle$100.00









