Comparison

Grand Design Compass Connect 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

Grand Design Compass Connect

Manage and customize your RV's smart home features from your mobile device. Control slides, awnings, monitor levels, and create custom modes for personalized trips. Enhance your RV experience with advanced features like leveling, generator control, and remote device management.

Highlights
  • Customizable Modes
  • Favorite Device Selection
  • Slide and Awning Control
  • Battery and Water Level Monitoring
  • Trip Planning Checklists
  • RV Leveling System
  • Remote Device Control
Features
Read full description

The Compass Connect™ App brings Smart Home convenience to your RV, allowing you to easily manage and customize key devices, systems and features: • Make custom Modes for personalized device lists by trip stage. • Select Favorites for quick access to commonly used devices. • Extend and Retract Slides and Awnings. • Monitor battery and water levels. • Create Checklists for trip planning and maintenance. • Use Dark Mode for enhanced readability. For compatible RVs, enjoy additional features: • Leveling: Active bubble level, custom setpoints and Auto-Level. • Automatic generator control for on/off scheduling. • Customizable lighting for Dimming or RGB lights. • Remotely control select devices with ConnectAnywhere™ 2.0 and a Telematics plan. • Track RV Mileage with the Anti-lock Braking system’s digital odometer Add aftermarket accessories to enhance your RV experience: • TPMS: Monitor tire health. • Liquid Propane Sensors: Monitor tank levels. • Temperature Sensors: Keep an eye on food safety. • Smart Door Locks: Secure your RV. Check your RV’s compatibility and visit the Lippert™ store for accessories and Telematics plans. Bluetooth® or WiFi is required for operation.

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

Grand Design Compass Connect4 screens
SLO/SLA Calc4 screens

Verdict

The call

The clearest difference is review sentiment: SLO/SLA Calc at 100% against Grand Design Compass Connect's 8%. SLO/SLA Calc also leads on rating (5.0 vs 3.9). Grand Design Compass Connect's advantage is price (Free vs $1.99) and ratings volume (504 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

Grand Design Compass Connect 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 3.9. That said, the two scores are not equally well evidenced: Grand Design Compass Connect has 504 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 8% of Grand Design Compass Connect's written reviews are positive against 100% of SLO/SLA Calc's.

UpkeepUpdate frequency

Grand Design Compass Connect ships an update every 3 weeks, SLO/SLA Calc every 11 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Grand Design Compass Connect versus SLO/SLA Calc: the parameters behind the verdict, then further details
ParameterGrand Design Compass ConnectSLO/SLA Calc
PriceFree — better$1.99
Rating3.9 (504 ratings)5.0 (1 ratings) — better
Positive reviews8.0% of reviews100.0% of reviews — better
Number of ratings504 — better1
Update frequencyEvery 3 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size238 MB5 MB
Age rating4+4+
DeveloperLippert Components, Inc.Ruben Calzadilla

Customer experience

Grand Design Compass Connect

All ratings476 ratings
Positive71.0%
Neutral4.2%
Negative24.8%
Written reviews113 reviews
Positive8.0%
Neutral9.7%
Negative82.3%

SLO/SLA Calc

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

Bugs and requests

Grand Design Compass Connect

Reported bugs

6 issues
  • Bluetooth connection issues
  • Checklists not syncing
  • HVAC controls resetting temperature
  • Leveling system interface problems
  • Tire Linc screen causing in-motion lockout
Show 1 more
  • Voltage reading not working

Requested features

5 requests
  • Add CarPlay support
  • Display tank levels
  • Larger fonts for TireLinc
  • Custom labels for slide outs
  • Option to disable in-motion lockout

SLO/SLA Calc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Grand Design Compass Connect

No in-app purchases

None

SLO/SLA Calc

No in-app purchases

Questions

Is Grand Design Compass Connect free?
Grand Design Compass Connect 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, Grand Design Compass Connect or SLO/SLA Calc?
SLO/SLA Calc is rated higher. Grand Design Compass Connect averages 3.9 out of 5 from 504 ratings, while SLO/SLA Calc averages 5.0 from 1 ratings.
Do Grand Design Compass Connect or SLO/SLA Calc have ads?
Neither Grand Design Compass Connect nor SLO/SLA Calc shows ads.
Which is updated more often, Grand Design Compass Connect or SLO/SLA Calc?
Grand Design Compass Connect ships an update every 3 weeks, and SLO/SLA Calc every 11 days. Most recently, Grand Design Compass Connect was updated on November 8, 2026 and SLO/SLA Calc on October 31, 2026.

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