Best IO ∙ Converter & Calculator alternatives: apps like IO ∙ Converter & Calculator

10+ similar apps compared and reviewed

4.2 avg rating
9 free apps
Updated November 2026

IO ∙ Converter & Calculator is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to IO ∙ Converter & Calculator

Grocery Ease#1

Grocery Ease by Cheng Cheng

Your best buddy for groceries!
Editor's Choice
🔧 Utilities
5.0(1 ratings)
FreeIn-App Purchases
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Organize your shopping with this intuitive grocery list manager. Create custom lists, categorize items by department, and check them off as you shop. Syncs across devices and works offline for seamless planning.

My Inventory Stack#2

My Inventory Stack by Bryan Jeffrey Martin

Inventory & Stock Tracker
Strong Contender
🔧 Utilities
1.0(2 ratings)
FreeIn-App Purchases
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Manage your business or collection with this intuitive inventory companion. Track items, quantities, sales, and suppliers. Organize your stock with custom categories and receive reminders for re-ordering.

Unit Converter & Currency Rate#3

Unit Converter & Currency Rate by FOMICHEV DENIS

Money & Metric Conversion Tool
Worth Considering
🔧 Utilities
3.7(15 ratings)
FreeAdsIn-App Purchases
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This universal converter simplifies measurement and currency conversions. Easily switch between imperial and metric units, convert currencies with daily updates, and handle cooking measurements or vehicle fuel efficiency. It also helps find international clothing and shoe sizes.

More apps like IO ∙ Converter & Calculator

4
Metrify
Metrify
Metrify
Unit & currency converter
Free

Effortlessly convert between imperial and metric units, and currencies, with this clean and fast utility. Ideal for everyday tasks like cooking, shopping, and travel, it simplifies comparisons and calculations.

Imperial to metric conversionCurrency conversionPrice comparison
🔧 Utilities
(7)
freemium
5
QR Code - Reader Pro
QR Code - Reader Pro
QR Code - Reader Pro
by 建 郭
Free

Easily scan QR codes and barcodes to access information. You can also create and share your own codes with others. Upgrade for unlimited scans and an ad-free experience.

Scan QR codes and barcodesCreate custom QR codesShare codes with friends
🔧 Utilities
(4)
free with in-app purchases
6
Safety - Hide photos, videos
Safety - Hide photos, videos
Safety - Hide photos, videos
Private photo, video vault
Free

Securely store and manage your private photos and videos with PIN or biometric locks. Organize content into folders, import from other apps, and share securely. Offers a dummy vault for added privacy.

PIN and biometric lockingDummy vault optionFolder management
🔧 Utilities
(19)
free with in-app purchases
7
Memory Knots
Memory Knots
Memory Knots
Color coded memory hints
$0.99

Enhance your recall with color-coded reminders that are always accessible. This tool is ideal for managing multiple tasks, from academic schedules to daily errands, ensuring you stay organized and on track.

Color-coded memory hintsIntuitive reminder systemTask management for busy individuals
🔧 Utilities
(9)
paid
8
KME Smart
KME Smart
KME Smart
IoT Smart Home
Free

Manage and control your smart home devices remotely. Connect lights, curtains, and TVs, and automate tasks with voice commands. Visualize sensor data and track assets with this comprehensive IoT solution.

Remote device managementVoice control integrationAutomatic scene setup
🔧 Utilities
(4)
free
9
Days Counter Calculator
Days Counter Calculator
Days Counter Calculator
Days between two dates
Free

Easily calculate the number of days between two specific dates. This free utility app provides a straightforward way to count elapsed days by simply inputting your start and end dates.

Calculate elapsed daysSpecify start and end datesSimple and free to use
🔧 Utilities
(2)
ad-supported
10
Network APIs
Network APIs
Network APIs
Silent Network Authentication
Free

This app provides a silent, background security layer for device sign-ins. It uses SIM-based network authentication to confirm your device automatically, eliminating the need for passwords or prompts for fast and secure access.

Silent background securityOperator protected authenticationSIM-based network authentication
🔧 Utilities
(1)
free