# Periodic Table PRO vs AALocker

Periodic Table PRO and AALocker both sit at 4.6 stars, but that hides the real split: 70% of AALocker's written reviews are positive against 50% of Periodic Table PRO's. AALocker also leads on update cadence (fortnightly vs every 6 weeks) and monetization model (free with in-app purchases vs paid). Periodic Table PRO's advantage is iOS requirement (13.0 vs 16.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Periodic Table PRO sells 8 one-off in-app purchases and AALocker sells 7 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Periodic Table PRO against 4.6 for AALocker. Both are backed by a comparable volume of ratings — 86 and 259 respectively. Written reviews are what separate them: 50% of Periodic Table PRO's written reviews are positive against 70% of AALocker's.

Periodic Table PRO ships an update every 6 weeks, AALocker fortnightly. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Periodic Table PRO | AALocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (86 ratings)](https://appshunter.io/ios/app/periodic-table-pro/id1601545941/reviews)** | [4.6 (259 ratings)](https://appshunter.io/ios/app/aalocker-app-locker/id1664034558/reviews) |
| Number of ratings | 86 | **259** |
| Positive reviews | 50.0% of reviews | **69.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 210 MB | 21 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AGILE FLEX TECH SRL](https://appshunter.io/developer/1601049602) | [Nanjing Oumi Software Development Co., Ltd.](https://appshunter.io/developer/1653042026) |

## What reviewers say

### Periodic Table PRO

[App page](https://appshunter.io/ios/app/periodic-table-pro/id1601545941)

Explore a virtual chemistry lab with interactive experiments and detailed information on all chemical elements. Features include atom structure simulations, downloadable PDFs, and studying analytics to enhance learning. Supports multiple languages and offers a cohesive, functional design.

**Highlights:** Virtual chemistry lab with experiments, Detailed chemical element information, Atom structure simulations, Downloadable element PDFs, Studying analytics, Multi-language support

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SPECIAL OFFER! | $9.99 | one-time |
| Chernobyl experiments | $9.99 | one-time |
| Explosive experiments | $9.99 | one-time |
| Funny experiments | $9.99 | one-time |
| Experiments with fire | $9.99 | one-time |
| Gas bubbles experiments | $9.99 | one-time |
| Melting experiments | $9.99 | one-time |
| Oxidation experiments | $9.99 | one-time |


### AALocker

[App page](https://appshunter.io/ios/app/aalocker-app-locker/id1664034558)

This app helps parents manage their children's device usage by blocking specific apps and setting time limits. It allows for scheduled access and can lock apps based on location to encourage responsible digital habits.

**Highlights:** Block specific apps, Set daily schedules, App usage limits, Location-based app blocking, Focus mode

**Features:** Family Sharing, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to VIP | $1.99 | per 7 days |
| Upgrade to VIP | $1.99 | per 7 days |
| Upgrade to VIP | $5.99 | per month |
| Upgrade to VIP | $5.99 | per month |
| Upgrade to VIP | $9.99 | per year |
| Upgrade to VIP | $9.99 | per year |
| Upgrade to lifetime VIP | $14.99 | one-time |

**What reviewers like**

- 👍 Hides apps effectively
- 👍 Can change app icons
- 👍 Good for privacy
- 👍 Works fine for some users
- 👍 Amazing app overall

**What reviewers complain about**

- 🐛 Glitching and not working
- 🐛 Stuck on password/authorization screen
- 🐛 Can't uninstall completely
- 🐛 App requests subscription repeatedly
- 🐛 Poor design for offers

**Reported bugs**

- Stuck on authorization/password screen
- Blank screen when searching in groups
- App icon still on desktop after enabling
- App cannot be uninstalled completely
- App glitches and doesn't work

**Requested features**

- Ability to change app names
- Add search functionality when adding apps
- Add Siri shortcuts toggle
- Ability to hide the app itself
- Support for older iOS versions (iOS 15)


## Frequently asked questions

### Is Periodic Table PRO free?

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

### Is AALocker free?

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

### Which has better reviews, Periodic Table PRO or AALocker?

Periodic Table PRO is rated higher. Periodic Table PRO averages 4.6 out of 5 from 86 ratings, while AALocker averages 4.6 from 259 ratings.

### Do Periodic Table PRO or AALocker have ads?

Neither Periodic Table PRO nor AALocker shows ads.

### Which is updated more often, Periodic Table PRO or AALocker?

Periodic Table PRO ships an update every 6 weeks, and AALocker fortnightly. Most recently, Periodic Table PRO was updated on September 18, 2026 and AALocker on September 21, 2026.

---

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