# aLock vs FieldSync PRO

The clearest difference is update cadence: FieldSync PRO at weekly against aLock's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. aLock sells 3 in-app purchases, starting at $2.99 per 7 days and FieldSync PRO sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

aLock ships an update every 3 weeks, FieldSync PRO weekly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | aLock | FieldSync PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (32 ratings)](https://appshunter.io/ios/app/alock-app-lock/id1663668785/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 7 MB | 7 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [裕涛 兰](https://appshunter.io/developer/1624361053) | [Masashi Konno](https://appshunter.io/developer/1877017984) |

## What reviewers say

### aLock

[App page](https://appshunter.io/ios/app/alock-app-lock/id1663668785)

Manage your screen time effectively by setting usage limits for apps and automatically restricting them when limits are reached. This app helps users, including children, focus better by blocking distractions and inappropriate content. A free trial is available for premium features.

**Highlights:** Set app usage limits, Automatic app restriction, Manual app restriction/restoration, Focus enhancement for children, Distraction blocking, Free trial for premium features

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| App Lock for 1 week | $2.99 | per 7 days |
| App Lock for 1 year | $9.99 | per year |
| App Lock Premium | $19.99 | one-time |


### FieldSync PRO

[App page](https://appshunter.io/ios/app/fieldsync-pro-photo-share/id6761321413)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FieldSync PRO Monthly | $2.99 | per month |


## Frequently asked questions

### Is aLock free?

aLock is free to download, with in-app purchases available.

### Is FieldSync PRO free?

FieldSync PRO is free to download, with in-app purchases available.

### Do aLock or FieldSync PRO have ads?

Neither aLock nor FieldSync PRO shows ads.

### Which is updated more often, aLock or FieldSync PRO?

aLock ships an update every 3 weeks, and FieldSync PRO weekly. Most recently, aLock was updated on October 27, 2026 and FieldSync PRO on October 28, 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.*