Comparison

Length Converter vs SideKey

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

Head to head
About

Length Converter

Easily convert lengths between various units including feet, inches, meters, decimeters, centimeters, and millimeters. This tool is designed for quick and accurate conversions for a wide range of users.

Highlights
  • Converts feet, inches, meters, decimeters, centimeters, millimeters
  • Fast and accurate conversions
  • User-friendly interface
  • Supports multiple units
Features
Read full description

Length Converter is the fast length converter to convert for Feet, Inch, Meter, Decimeter, Centimeter, Millimeter. You can use it if you builder, mapmaker, seamstress, traveler or another cool man. Convert lengths quickly and as you want. To use some functions you will need Premium Access: Feet, Inch, Price per length, Unit button and Currency Converter fields are available for input and convert. --- The Terms of Use https://feelmanapp.com/terms-conditions-for-length-converter/

About

SideKey

This app allows you to customize your iPhone's Action Button with a personalized launcher for your favorite tools and shortcuts. Organize actions into profiles, access useful utilities like a private camera and QR code generator, and integrate with Apple Shortcuts.

Highlights
  • Personalized Action Button launcher
  • Customizable action profiles
  • Private camera with locked library
  • QR code generator
  • Find my car feature
  • Integration with Apple Shortcuts
Features
Read full description

Make your Action Button do more. Sidekey brings your favorite tools and shortcuts into one personal launcher. Press and hold your iPhone Action Button, choose an action, and get on with your day. YOUR BUTTON, YOUR WAY Choose your actions, personalize their names and colors, and arrange them in the order you want. Everyday, Work and Unwind profiles are included for free. Switch between them whenever your routine changes. USEFUL TOOLS, INCLUDED FOR FREE Capture a quick note before the thought disappears. Start a focus timer, take a guided breathing break, use the flashlight, or check copied text. Take photos and videos with Pocket camera. Record, play and share voice notes. Scan multiple pages into a shareable PDF. Keep a favorite website or Maps destination within easy reach. Connect your own Apple shortcuts to open apps, play playlists, set a Focus mode, create reminders and more. Simple recipes explain how to build each shortcut and connect it to Sidekey. GET MORE WITH SIDEKEY+ Private camera Keep personal photos and videos in a locked library inside Sidekey. Unlock with Face ID, Touch ID or your device passcode. Captures stay out of Photos unless you choose to export them. View, share or delete them while your SideKey+ access is active. Find my car Save your parking spot, add a garage or parking note, and get walking directions back through Apple Maps. Make a QR Turn a link or text into a QR code. Show it across the table or share it without asking anyone to type. Say it big Display a large message across your screen when a noisy room makes talking difficult. Custom profiles Create your own profiles for travel, work, weekends or any routine. Give each profile its own selection of actions and switch when you need a different menu. EASY FROM THE FIRST PRESS The built-in guide walks you through Settings, Action Button and Shortcut selection. Choose Open Launcher for your personal menu, or create a shortcut with Open a Sidekey Tool to open a supported tool directly. You can also set up Siri, Back Tap, a Home Screen shortcut or a Shortcuts widget. Interactive 3D illustrations help you explore the button and understand setup. ABOUT PRIVATE CAMERA You start each capture with visible camera controls. The private library locks when the app enters the background. Private captures are excluded from device backups. Export anything you want to keep before deleting the app or allowing SideKey+ access to end. Subscription expiry does not automatically delete saved captures, but access to the library requires an active subscription. The physical Action Button requires a compatible iPhone and setup in Settings. Some tools require permissions, and some actions require shortcuts you create in Apple Shortcuts. Your iPhone may need to be unlocked. Privacy Policy: https://docs.google.com/document/d/1E1HQ0nYFtQ-lgMwXFpBDjSVkpBFgQ7CUhbKsvGVnicE/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/1HZq2AED1FPq3ou1c1bIO_z6jR0lIPrYYBXl_-8M9Pbc/edit?usp=sharing

Screenshots

Length Converter4 screens
SideKey4 screens

Verdict

The call

The clearest difference is rating: Length Converter at 4.8 against SideKey's 1.0. Length Converter also leads on in-app purchases (none vs 3) and ratings volume (12 vs 1). SideKey's advantage is update cadence (every 5 days vs every 72 months). On price and ads 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. SideKey sells 3 in-app purchases, starting at $3.99 per 7 days. Length Converter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Length Converter holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Length Converter has 12 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Length Converter ships an update every 72 months, SideKey every 5 days. Both last shipped on October 29, 2026.

Scorecard7 real differences · 2 level
Length Converter versus SideKey: the parameters behind the verdict, then further details
ParameterLength ConverterSideKey
PriceFreeFree
Rating4.8 (12 ratings) — better1.0 (1 ratings)
Number of ratings12 — better1
Update frequencyEvery 72 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.4 — better18.6
Further details — not scored
Size2 MB75 MB
Age rating4+4+
DeveloperAnna FilobokAhmet Giray Ucar

Customer experience

Length Converter

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

SideKey

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Length Converter

No in-app purchases

3 purchases

SideKey

Subscriptions3
  • SideKey+ Weekly$3.997 Days
  • SideKey+ Monthly3 Days trial$7.991 Month
  • SideKey+ Yearly$24.991 Year

Questions

Is Length Converter free?
Length Converter is free to download, with no in-app purchases.
Is SideKey free?
SideKey is free to download, with in-app purchases available.
Which has better reviews, Length Converter or SideKey?
Length Converter is rated higher. Length Converter averages 4.8 out of 5 from 12 ratings, while SideKey averages 1.0 from 1 ratings.
Do Length Converter or SideKey have ads?
Neither Length Converter nor SideKey shows ads.
Which is updated more often, Length Converter or SideKey?
Length Converter ships an update every 72 months, and SideKey every 5 days. Most recently, Length Converter was updated on October 29, 2026 and SideKey on October 29, 2026.

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