Comparison

AlterLock vs Emi Clock

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

Head to head
About

AlterLock

This app pairs with a theft prevention device to monitor your vehicle. It offers loud alarms, smartphone notifications, and GPS tracking to deter theft and provide location updates. Manage vehicle details, device settings, and track your assets with peace of mind.

Highlights
  • Movement-detection alarm
  • Smartphone notifications
  • Independent communication
  • Advanced GPS tracking
  • Vehicle registration
  • Device settings adjustment
  • Map-based location history
Read full description

The AlterLock app works in conjunction with the theft prevention device "AlterLock" to keep an eye on your beloved vehicle, including bicycles, motorcycles, and cars. The AlterLock device provides peace of mind through loud alarms, smartphone notifications, and GPS tracking capabilities. Key features include: 1. Alarm to Deter Thieves: A movement-detection alarm sounds directly from the device, deterring criminals and providing a strong deterrent against theft and vandalism. 2. Smartphone Notifications for Assurance: If the device detects movement, it will send a unique notification sound to your smartphone, allowing you to quickly notice and rush to your vehicle. 3. Independent Communication Function: The device can communicate on its own, sending notifications and location information even outside the Bluetooth range. 4. Advanced Tracking Ability: It attempts to pinpoint location information indoors and outdoors by receiving not only precise GPS signals but also Wi-Fi and cell tower signals. Additional App Functions: - Register photos, specs, and frame numbers of your vehicles. - Toggle the device's lock mode. - Adjust various device settings (detection sensitivity, alarm patterns, on/off, duration of sound, regular communication, accident detection, etc.). - Display tracking location information and history on the map screen. - Manage up to three vehicles and devices. Please note: - User registration is required to use the service. - Purchase of the AlterLock device and a service agreement is also required. - This service does not guarantee theft prevention. For more details on service contracts and usage fees, please visit: https://alterlock.net/en/service-description Terms and Conditions: https://alterlock.net/en/service-terms Privacy Policy: https://alterlock.net/en/privacy-policy

About

Emi Clock

Features
Read full description

Make every day a little more fun with Emi. Emi Clock is a character clock with outfits you can change. Enjoy the nostalgic world of Emi Clock for X11 on your iPhone, iPad, and Apple Watch. Emi sits at the center of the clock, dressed in a charming outfit. Every glance at the time brings a little joy to your screen. You can also find her in Home Screen widgets and Apple Watch complications. ■ Make the clock your own Combine outfits, clock faces, display colors, and backgrounds to create your favorite look. Enjoy automatic outfit changes every hour, or try the reverse clock, with its numbers arranged backward and hands moving counterclockwise. ■ Useful information at a glance Choose what appears in each corner: the date, digital time, weather, temperature, or battery level. You can also hide the information for a clean view of just the clock and Emi. ■ Enjoy it on iPhone and iPad Supports portrait and landscape orientations. Use a favorite photo as the background to create a clock that suits your desk or bedside table. Add small or large widgets to your Home Screen. ■ Enjoy it on Apple Watch, too Keep Emi’s clock on your wrist. Add a complication to a compatible watch face, then tap it to open the clock. ■ Hear the time Along with the familiar “Myu!” startup sound, you can set hourly and half-hourly chimes and an alarm. ■ Start for free Use the basic features for free, with no time limit: two outfits, a blue clock face, date and battery displays, widgets, and more. The “Full Unlock” in-app purchase gives you access to additional outfits and clock faces, weather and temperature displays, high-resolution images, background options, chimes, alarms, and more. It is a one-time purchase, with no subscription. One purchase works across iPhone, iPad, and Apple Watch using the same Apple Account. ■ Available in 10 languages Supports Japanese, English, German, Traditional and Simplified Chinese, Korean, Spanish, French, Brazilian Portuguese, and Italian. The built-in manual is available in each language. VoiceOver can also read the time and other information aloud. • Weather and temperature displays require location permission and an internet connection. • Photo backgrounds are available in the iPhone and iPad app. They do not appear in widgets or on Apple Watch. • On Apple Watch, Emi Clock runs as a clock app. It does not replace the standard Apple Watch face. • Widget updates, notifications, and sounds depend on the operating system and device settings.

Screenshots

AlterLock4 screens
Emi Clock4 screens

Verdict

The call

The clearest difference is update cadence: Emi Clock at daily against AlterLock's every 2 months. AlterLock's advantage is iOS requirement (15.0 vs 17.0). On price, 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

Both are free to download. AlterLock sells 2 in-app purchases, starting at $3.99 per month and Emi Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AlterLock ships an update every 2 months, Emi Clock daily. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
AlterLock versus Emi Clock: the parameters behind the verdict, then further details
ParameterAlterLockEmi Clock
PriceFreeFree
Rating3.7 (3 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings3 — better—
Update frequencyEvery 2 monthsDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.0 — better17.0
Further details — not scored
Size87 MB194 MB
Age rating4+4+
DeveloperNEXTSCAPE INC.Studio Abok

In-app purchases

2 purchases

AlterLock

Subscriptions2
  • Monthly Plan7 Days trial$3.991 Month
  • Annual Plan1 Month trial$39.951 Year
1 purchases

Emi Clock

One-time1
  • Unlock All Features$1.99

Questions

Is AlterLock free?
AlterLock is free to download, with in-app purchases available.
Is Emi Clock free?
Emi Clock is free to download, with in-app purchases available.
Do AlterLock or Emi Clock have ads?
Neither AlterLock nor Emi Clock shows ads.
Which is updated more often, AlterLock or Emi Clock?
AlterLock ships an update every 2 months, and Emi Clock daily. Most recently, AlterLock was updated on October 23, 2026 and Emi Clock on October 24, 2026.

Other comparisons