Comparison

slydial vs Accumula

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

Accumula

Features
Read full description

Accumula helps you build consistent progress by turning daily effort into clear, cumulative results. Track unlimited study, work, or personal projects with simple timers, manual time entry, and session history that stays organized. Open the dashboard to instantly see Today, This Week, and All-Time totals, plus visual time distribution so you always know where your time is going. Use Quick Record when you just need to start fast, then assign sessions to the right project later. Add manual sessions when you forgot to run a timer. Review recent sessions, drill into details, add notes, and keep momentum with reminders and consistency tracking. For power users, Accumula Pro unlocks advanced workflows including multi-project insights, backup/restore, attachments, expanded reminders, and calendar integration. Whether you are preparing for exams, building skills, or tracking deep work, Accumula keeps your progress visible and motivating.

Screenshots

slydial4 screens
Accumula4 screens

Verdict

The call

The clearest difference is iOS requirement: slydial at 17 against Accumula's 26.2. On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. slydial sells 3 in-app purchases, starting at $2.99 per month and Accumula sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
slydial versus Accumula: the parameters behind the verdict, then further details
ParameterslydialAccumula
PriceFreeFree
Rating4.6 (503 ratings) — better—
Positive reviews29.4% of reviews—
Number of ratings503 — better—
Update frequencyEvery 4 months—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS17 — better26.2
Further details — not scored
Size4 MB13 MB
Age rating4+4+
DeveloperMobileSphere, LtdJonathan Lee Gibbons

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

Accumula

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
1 purchases

Accumula

One-time1
  • Accumula Pro Lifetime$9.99

Questions

Is slydial free?
slydial is free to download, with in-app purchases available.
Is Accumula free?
Accumula is free to download, with in-app purchases available.
Do slydial or Accumula have ads?
Neither slydial nor Accumula shows ads.

Other comparisons