Comparison

slydial vs Numero CallTime

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

Head to head
About

slydial

This app allows you to send personalized voice messages directly to someone's voicemail, bypassing the need for a live conversation. It's designed for quick, efficient communication when you don't have time to talk or wish to avoid interrupting. Features include group messaging and hands-free Siri integration.

Highlights
  • Direct to voicemail messaging
  • Group voicemail sending
  • Hands-free Siri integration
  • Personalized voice messages
  • Time-saving communication
Features
Read full description

All new slydial, our best app yet! We’ve completely redesigned slydial from the ground up with a fresh look, smoother performance, and brand-new features. It’s the easiest, smartest way to connect straight to voicemail. What is slydial? Slydial lets you skip the conversation and go directly to someone’s voicemail. Perfect when you don’t have time to talk, or don’t want to. With our Group Messaging feature, you can even send one prerecorded voicemail to up to 10 contacts at once. And now, it’s hands-free: just say “Hey Siri... Call [contact name] using slydial!” When do you slydial? Think of slydial as your secret communication shortcut. Use it to: -Save time when you’re busy. -Respect someone’s time by not interrupting. -Get your point across when a text won’t cut it. -Avoid the stress of an awkward conversation. How does it work? 1. Open the slydial app. 2. Sign in or create a free account. 3. Choose a contact (or enter their number). 4. Slydial connects you directly to voicemail, simple as that. Upgrade to slydial Premium to skip in-call ads, or get Group slydial to send  a single voicemail to multiple contacts and track your results. *Good to know: Slydial works from U.S. phones to U.S. phones only.

About

Numero CallTime

This app helps manage fundraising campaigns by providing contact information, interaction history, and communication tools. It allows users to easily call, text, or email contacts, log interactions, and track progress on tasks and lists.

Highlights
  • Manage fundraising campaigns
  • Access real-time contact information
  • Log calls, notes, and contact details
  • Track progress on lists and tasks
  • One-click text and email templates
  • Search entire Donor CRM
Features
Read full description

Campaign fundraising from anywhere with Numero CallTime. All the latest information for your contacts at your fingertips, built for easy team coordination no matter where they might be. Use your Numero CallTime app to: - CallTime on YOUR Time - Work through calltime lists to easily call, text, or email contacts, whether it's during scheduled calltime or that spare few minutes between meetings. Use one-click text and email templates to follow up immediately. - Always Have the Most Current Information - View interaction and contribution history for your contacts, updated in real time. - Never Forget a Detail - Automatically log calls, add notes, and edit contact information for your contacts at the time it happens. - Track Your Progress - See your progress through your lists and tasks, as you mark calls as complete. - Access All Contacts - Search for any contact in your Numero Donor CRM, regardless of whether they were assigned on a calltime list, to bring the power of your Donor CRM to your fingertips.

Screenshots

slydial4 screens
Numero CallTime4 screens

Verdict

The call

slydial and Numero CallTime both sit at 4.6 stars, but that hides the real split: 100% of Numero CallTime's written reviews are positive against 29% of slydial's. Numero CallTime also leads on in-app purchases (none vs 3) and device support (3 vs 1). slydial's advantage is ratings volume (505 vs 17). On price, rating, update cadence and ads 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. slydial sells 3 in-app purchases, starting at $2.99 per month. Numero CallTime asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for slydial against 4.8 for Numero CallTime. That said, the two scores are not equally well evidenced: slydial has 505 ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 29% of slydial's written reviews are positive against 100% of Numero CallTime's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

Scorecard5 real differences · 5 level
slydial versus Numero CallTime: the parameters behind the verdict, then further details
ParameterslydialNumero CallTime
PriceFreeFree
Rating4.6 (505 ratings)4.8 (17 ratings) — better
Positive reviews29.4% of reviews100.0% of reviews — better
Number of ratings505 — better17
Update frequencyEvery 4 monthsEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS1716.4 — better
Further details — not scored
Size4 MB63 MB
Age rating4+4+
DeveloperMobileSphere, LtdNUMERO, INC.

Customer experience

slydial

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews109 reviews
Positive29.4%
Neutral3.7%
Negative67.0%

Numero CallTime

All ratings16 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

slydial

Reported bugs

21 issues
  • App no longer works for many users
  • Login/registration errors
  • Numbers are marked as invalid
  • Calls ring instead of going to voicemail
  • App crashes or freezes
Show 16 more
  • App is slow and unresponsive
  • Incorrect numbers are dialed
  • App shows caller number to recipient
  • Login issues after account deletion
  • Error screen at registration
  • App does not see new numbers added to phone book
  • Call disconnects when typing number
  • App freezes after every use, requires reinstall
  • Shows "unknown caller" and doesn't go to voicemail
  • Paid subscription still has ads and issues
  • Phone number is out of service
  • App doesn't work with new iPhones
  • App doesn't work with iPhone 4S
  • Adds extra numbers to dialing string
  • One ring before going to voicemail
  • Recipient sees "Slydial" in recent calls

Requested features

4 requests
  • Extension option for dialing
  • Ability to see called numbers history
  • Dark mode option
  • Option to record and send messages directly from iPhone

Numero CallTime

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

slydial

Subscriptions2
  • Premium Monthly Plan$2.991 Month
  • Premium Annual Plan$29.991 Year
One-time1
  • Premium Group slydial$9.99
None

Numero CallTime

No in-app purchases

Questions

Is slydial free?
slydial is free to download, with in-app purchases available.
Is Numero CallTime free?
Numero CallTime is free to download, with no in-app purchases.
Which has better reviews, slydial or Numero CallTime?
Numero CallTime is rated higher. slydial averages 4.6 out of 5 from 505 ratings, while Numero CallTime averages 4.8 from 17 ratings.
Do slydial or Numero CallTime have ads?
Neither slydial nor Numero CallTime shows ads.
Which is updated more often, slydial or Numero CallTime?
slydial ships an update every 4 months, and Numero CallTime every 4 months. Most recently, slydial was updated on October 23, 2026 and Numero CallTime on October 22, 2026.

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