Comparison

EarthLink vs SLO/SLA Calc

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

Head to head
About

EarthLink

Manage your EarthLink services, view and pay bills, and upgrade your internet or other features. Get instant support through chat and receive important account updates.

Highlights
  • Account management
  • Bill viewing and payment
  • Service upgrades
  • Live chat support
  • Account notifications
  • Secure login
Features
Read full description

Welcome to EarthLink Connect - your all-in-one portal to effortlessly manage your EarthLink account and services.  Getting Started is Effortless:   • Secure Login: Use your EarthLink email credentials to access your account with confidence.   • Multiple Accounts? No Problem: For checking different accounts, simply log out and re-login.   • Optimal Functionality: To experience all the app's features, select "Allow" when prompted for permissions.  Why Choose EarthLink Connect?   • Easy Management: With a user-friendly interface, easily access and manage your account details. Whether you're updating personal information or checking your billing, EarthLink Connect makes it simple.  • Bill Simplified: Never miss a due date again. View, manage, and make secure payments swiftly. Our seamless "bill pay" feature ensures clarity and ease.  • Upgrade Services: Want faster internet or added features? Upgrade your services with just a few taps. It's straightforward and hassle-free.  • Chat & Support: Need assistance? Connect with our support team directly through the chat feature. EarthLink's renowned support is now more accessible than ever.  • Stay Updated: EarthLink Connect provides instant notifications on account updates, ensuring you're always in the loop.  • Secure & Trustworthy: As part of the EarthLink family, this app maintains the highest standards of security, ensuring your personal and payment information remains confidential.  Join thousands of satisfied EarthLink users. With EarthLink Connect, account management is not just easy; it's a pleasure. Download now and experience the difference.

About

SLO/SLA Calc

This tool helps engineers and operators model system availability and evaluate designs before deployment. It calculates availability for various configurations, estimates device reliability, and allows users to build and visualize complex systems. Generate professional PDF reports and review key definitions for availability and reliability.

Highlights
  • Calculate system and device availability
  • Model series, parallel, and N:M designs
  • Estimate device availability using MTBF, MTTR
  • Save and reuse devices/subsystems as Blocks
  • Build larger Systems by connecting Blocks
  • Visualize system architecture
  • Generate and share PDF reports
Read full description

SLO/SLA Calc helps engineers, architects, SREs, and operators move from Device assumptions to resilient System decisions before deployment. Model operational availability and time-bound Mission Reliability. Calculate Series, Parallel, N:M, and Cross-Connected topologies. Estimate Device Availability from manufacturer MTBF or documented generic estimates, then account for repair time, spare logistics, support agreements, EOL sourcing, and redundant power. Review exactly how each assumption affects the result. Save Devices and subsystems as reusable Blocks, then arrange them into larger Systems. With Live Modeling, apply temporary failures to Blocks, internal Components, and switches. Remaining Availability updates immediately while animated Red and Blue paths show which inputs survive. Shared paths become Purple, and optional output switches select a healthy single handoff. MODEL AVAILABILITY - Calculate System and Device Availability - Review a transparent Device calculation breakdown - Edit the defaults used for new Device calculations - Translate availability into downtime per day, week, month, or year - Model Series, Parallel, heterogeneous N:M, and Cross-Connected designs - Reuse saved Devices as named topology Components EVALUATE A MISSION - Estimate Mission Reliability for a defined duration in hours, days, or weeks - Use stored MTBF or an explicit availability-only assumption - Compare Mission Success, Interruption Risk, and any-Component failure probability - See expected failed Components and the weakest individual contributor - Distinguish provided, estimated, assumption-based, and mixed data BUILD AND TEST SYSTEMS - Assemble Systems from reusable Blocks and ordered Stages - Use Direct or Full Cross multi-path Handoffs - Add optional output switches and explicit Ideal Paths - Simulate Block, Component, and switch failures - Trace surviving flows in portrait or full-screen landscape COMPARE AND SHARE - Compare complete Systems and quantify downtime reduction - Evaluate a design against a target SLO - See remaining or exceeded error budget - Generate and share professional PDF reports - Export, share, preview, and import editable JSON-based .slosla files - Edit imported Block Components and recalculate the design Learn through an expanded Guided Tour, worked examples, formulas, model assumptions, and practical design guidance. SLO/SLA Calc works entirely offline and stores Device defaults, Blocks, and Systems locally on your device. No account is required. Files leave your device only when you choose to export or share them. One purchase unlocks the complete app. No ads, analytics, tracking, subscriptions, or in-app purchases.

Screenshots

EarthLink4 screens
SLO/SLA Calc4 screens

Verdict

The call

The clearest difference is review sentiment: SLO/SLA Calc at 100% against EarthLink's 0%. SLO/SLA Calc also leads on rating (5.0 vs 1.9). EarthLink's advantage is price (Free vs $1.99) and ratings volume (164 vs 1). On update cadence, 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

EarthLink is free to download; SLO/SLA Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SLO/SLA Calc holds the better App Store score, 5.0 against 1.9. That said, the two scores are not equally well evidenced: EarthLink has 164 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of EarthLink's written reviews are positive against 100% of SLO/SLA Calc's.

UpkeepUpdate frequency

EarthLink ships an update every 3 weeks, SLO/SLA Calc every 11 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
EarthLink versus SLO/SLA Calc: the parameters behind the verdict, then further details
ParameterEarthLinkSLO/SLA Calc
PriceFree — better$1.99
Rating1.9 (164 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings164 — better1
Update frequencyEvery 3 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size46 MB5 MB
Age rating4+4+
DeveloperEarthLink LLCRuben Calzadilla

Customer experience

EarthLink

All ratings154 ratings
Positive18.8%
Neutral7.1%
Negative74.0%
Written reviews56 reviews
Positive0.0%
Neutral7.1%
Negative92.9%

SLO/SLA Calc

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

EarthLink

Reported bugs

23 issues
  • App crashes on opening
  • Login issues
  • Credentials incorrect
  • Cannot register
  • Cannot create account
Show 18 more
  • Cannot change password
  • Verification code issues
  • App freezes
  • App unresponsive
  • App laggy
  • Email not delivered
  • Email app broken
  • App requires re-login
  • App screens poorly formatted
  • Text overlapping/disappearing
  • App size incorrect for device
  • Cannot access webmail
  • Service chat not working on iOS
  • App requires autopay
  • Router not arriving
  • Router not working
  • Internet shuts off at midnight
  • Cannot use microphone feature

Requested features

11 requests
  • Improve app design and usability
  • Fix app compatibility issues
  • Allow users to choose notification permissions
  • Retain user credentials after logging out
  • Improve customer support responsiveness and effectiveness
Show 6 more
  • Provide clear communication about product changes
  • Fix email app functionality
  • Return to previous app version that worked well
  • Allow users to link to autofill passwords
  • Fix app size for different devices
  • Allow users to access webmail through the app

SLO/SLA Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

EarthLink

No in-app purchases

None

SLO/SLA Calc

No in-app purchases

Questions

Is EarthLink free?
EarthLink is free to download, with no in-app purchases.
Is SLO/SLA Calc free?
SLO/SLA Calc costs $1.99, with no in-app purchases.
Which has better reviews, EarthLink or SLO/SLA Calc?
SLO/SLA Calc is rated higher. EarthLink averages 1.9 out of 5 from 164 ratings, while SLO/SLA Calc averages 5.0 from 1 ratings.
Do EarthLink or SLO/SLA Calc have ads?
Neither EarthLink nor SLO/SLA Calc shows ads.
Which is updated more often, EarthLink or SLO/SLA Calc?
EarthLink ships an update every 3 weeks, and SLO/SLA Calc every 11 days. Most recently, EarthLink was updated on October 24, 2026 and SLO/SLA Calc on October 9, 2026.

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