Best apps like LunarCalc

40+ similar apps compared and reviewed

4.4 avg rating
5 free apps
Updated July 2026

Looking for something like LunarCalc? We've analyzed 40+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to LunarCalc

GO-29 SciRPN#1

GO-29 SciRPN by Steve Lidie

Editor's Choice
🔧 Utilities
5.0(4 ratings)
$6.99
GO-29 SciRPN screenshot 1
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GO-29 SciRPN screenshot 5
GO-29 SciRPN screenshot 6

This app offers a highly accurate simulation of the classic HP-29C programmable scientific calculator. It features RPN input, extensive storage registers, and a wide range of mathematical and statistical functions. Users can program complex calculations, import/export programs, and view detailed program information.

Atomic Clock (Gorgy Timing)#2

Atomic Clock (Gorgy Timing) by CompuLab, Markus Gömmel

The classic par excellence
Strong Contender
🔧 Utilities
4.8(4.8K ratings)
$1.99In-App Purchases
Atomic Clock (Gorgy Timing) screenshot 1
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This app provides ultra-precise time by syncing with atomic time servers. It features a customizable display mimicking professional studio clocks, with advanced alarm functions and various visual themes. Designed for accuracy and usability, it's ideal for professionals and enthusiasts alike.

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SmartSDR™ - FlexRadio Systems®
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Control your FlexRadio SDR device from your iPad or iPhone. Access nearly all features of the desktop client, including digital modes, signal analysis, and remote operation via SmartLink. Requires compatible FlexRadio hardware.

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Pocket Bubble Level XXL
Pocket Bubble Level XXL
Pocket Bubble Level XXL
Essential tool for handyman
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This app provides a precise spirit level using your smartphone's sensors. It helps you align objects horizontally, vertically, or at any angle, making it ideal for DIY projects and handyman tasks. Premium features offer augmented reality and advanced measurement capabilities.

Measures angle or inclinationPrecise inclination angle displayLockable orientation
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Voice recorder: Audio editor
Voice recorder: Audio editor
Voice recorder: Audio editor
Audio recorder & Audio editor
Free

Record high-quality audio for meetings, notes, lectures, and music with no time limits. This easy-to-use app offers background recording, adjustable sample rates, and editing capabilities. Save files to internal storage or an SD card and share them easily.

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NAVTEX Pad
NAVTEX Pad
NAVTEX Pad
Decodes NAVTEX and RTTY
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Decode NAVTEX and RTTY marine weather transmissions on your iOS device. View safety messages and weather reports without a dedicated receiver. Save and transfer decoded text for later use.

Decodes NAVTEX transmissionsDecodes RTTY (BAUDOT & ASCII)Saves received text
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HP 15c Calculator
HP 15c Calculator
HP 15c Calculator
Official emulator of HP 15c
$14.99

Experience the official emulator of the legendary HP 15c scientific calculator. This app offers a redesigned interface and modern look while preserving the precision and reliability of the original. It features RPN input, matrix calculations, complex functions, and numerical integration for professionals and students.

Official HP 15c emulatorRPN (Reverse Polish Notation)Matrix calculations
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9
The Moon Calendar PRO
The Moon Calendar PRO
The Moon Calendar PRO
The Moon Phases Schedule
Free

Track lunar cycles with a clear calendar showing moon phases and visibility percentage. Get notifications for full moons and explore past or future dates. Customize for your hemisphere and enjoy VoiceOver support.

Moon phase forecastVisibility percentageJump to any month/year
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10
Atomic Clock PRO
Atomic Clock PRO
Atomic Clock PRO
Exact Time Digital and Analog
Free

Get the most accurate time from an official atomic clock server. This app automatically detects your time zone and allows custom backgrounds. Easily switch between digital and analog clock displays with a swipe.

Exact time from atomic clockAutomatic time zone recognitionCustomizable background images
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