# AlterLock vs Emi Clock

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.

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.

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

## The numbers

| Metric | AlterLock | Emi Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/alterlock/id1418389534/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 87 MB | 194 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [NEXTSCAPE INC.](https://appshunter.io/developer/434362565) | [Studio Abok](https://appshunter.io/developer/309502669) |

## What reviewers say

### AlterLock

[App page](https://appshunter.io/ios/app/alterlock/id1418389534)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $3.99 | per month |
| Annual Plan | $39.95 | per year |


### Emi Clock

[App page](https://appshunter.io/ios/app/emi-clock/id6746370496)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $1.99 | one-time |


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*