Comparison

Basic Calendar vs SkyVoice Holy Micro

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

Head to head
About

Basic Calendar

This app offers a clean, monthly view of your Apple Calendar data. Personalize your schedule with color themes and stay on top of appointments with home screen widgets. Easily manage your events at a glance.

Highlights
  • Monthly calendar view
  • Apple Calendar integration
  • Customizable color themes
  • Home screen widgets
  • Intuitive user interface
Features
Read full description

Basic Calendar is an app that conveniently displays your Apple Calendar data in a monthly view. With a clean design and intuitive user interface, you can easily view and manage your schedule at a glance. Additionally, it supports various color themes, allowing you to personalize your experience and differentiate your events using different visual styles. The app also features widget functionality, ensuring that you never miss important appointments even from your home screen.

About

SkyVoice Holy Micro

Features
Read full description

SkyVoice Alert LHA is the official companion app for Holy Micro! aviation safety devices, including SkyVoice Alert LHA 500 and SkyVoice Glassy Guide 400. The app helps pilots connect to supported devices, access device controls, manage logs, view instructional content, and perform firmware updates directly from an iPhone or iPad. Aviation Safety at Your Fingertips SkyVoice Alert LHA 500 • FAA-approved Take-off and Landing Height Announcer • LiDAR-based height callouts from 500 ft to 1 ft • LiDAR range up to 590 ft • Repeated landing gear warnings from 560 ft until gear is down and locked • Bluetooth or wired headset/HUD support • User-selectable reminders for Gear, Checklist, LC GUMPS, Flaps, Speed, Clearance, Pump, Oxygen, IFR Altimeter, Top of Descent, Fuel, and Tank checks etc.. SkyVoice Glassy Guide 400 • FAA-approved height annunciator for landplanes and seaplanes • Accurate operation over both water and land • Radar-based range up to 400 ft • Bluetooth or wired audio connectivity • Up to four gear reminders • Portable Quick Install version available with rechargeable battery • Lightweight aircraft-grade aluminum enclosure App Features Connect to Your Devices • Dedicated access for SkyVoice Alert and Glassy Guide devices • Connect through device-specific Wi-Fi networks • Open device web interfaces directly from the app • Quick access to monitoring and configuration tools Log Management • Download device log files and raw log files • Manage stored logs locally • Upload logs to Holy Micro support for analysis • Send individual files or multiple files at once Over-the-Air (OTA) Updates • Check for available firmware updates • Download and validate update packages • Install firmware updates directly from the app • View release notes and update information before installation Instructional Videos • Access installation and operation guides • Learn how to install and use SkyVoice Alert and Glassy Guide products • Watch educational videos directly within the app Designed for General Aviation SkyVoice products are trusted by pilots flying a wide range of general aviation aircraft, including: • Cessna • Piper • Beechcraft • Diamond • Mooney • Seaplanes and other compatible aircraft Why SkyVoice? Visual illusions can affect altitude perception during takeoff and landing. SkyVoice devices provide precise audio callouts, landing gear reminders, and operational alerts to help improve situational awareness and support safer flying. Stack the odds in your favor. Install SkyVoice. Fly Safely. Note: This application is intended for use with compatible Holy Micro! SkyVoice hardware devices. Certain features require connection to a supported SkyVoice device and/or an active internet connection.

Screenshots

Basic Calendar4 screens
SkyVoice Holy Micro4 screens

Verdict

The call

The clearest difference is in-app purchases: SkyVoice Holy Micro at none against Basic Calendar's 2. SkyVoice Holy Micro also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads 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. Basic Calendar sells 2 one-off in-app purchases. SkyVoice Holy Micro asks for nothing beyond the download.

UpkeepUpdate frequency

Basic Calendar ships an update every 2 weeks, SkyVoice Holy Micro weekly. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 7 level
Basic Calendar versus SkyVoice Holy Micro: the parameters behind the verdict, then further details
ParameterBasic CalendarSkyVoice Holy Micro
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size5 MB111 MB
Age rating4+4+
Developerdotori kingSpectrum Software Solutions, Inc.

In-app purchases

2 purchases

Basic Calendar

One-time2
  • Buy Me a Coffee$0.99
  • Remove Ads$3.99
None

SkyVoice Holy Micro

No in-app purchases

Questions

Is Basic Calendar free?
Basic Calendar is free to download, with in-app purchases available.
Is SkyVoice Holy Micro free?
SkyVoice Holy Micro is free to download, with no in-app purchases.
Do Basic Calendar or SkyVoice Holy Micro have ads?
Neither Basic Calendar nor SkyVoice Holy Micro shows ads.
Which is updated more often, Basic Calendar or SkyVoice Holy Micro?
Basic Calendar ships an update every 2 weeks, and SkyVoice Holy Micro weekly. Most recently, Basic Calendar was updated on September 17, 2026 and SkyVoice Holy Micro on September 18, 2026.

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