# Abacus Practice vs Locked In

The clearest difference is in-app purchases: Abacus Practice at none against Locked In's 1. Abacus Practice also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Locked In sells 1 one-off in-app purchase. Abacus Practice asks for nothing beyond the download.

## The numbers

| Metric | Abacus Practice | Locked In |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Nikola Radoicic](https://appshunter.io/developer/1806746069) | [OMAR DANIEL GRAZIANO](https://appshunter.io/developer/1896485759) |

## What reviewers say

### Abacus Practice

[App page](https://appshunter.io/ios/app/abacus-practice/id6744260586)

**Features:** macOS Compatibility

**In-app purchases:** none


### Locked In

[App page](https://appshunter.io/ios/app/locked-in-prep-for-cissp/id6771480620)

Prepare for the CISSP exam with focused, bite-sized lessons and practice questions. This study companion covers all exam domains with visual aids, quick checks, and a mock exam. It works offline and offers a one-time unlock for full access.

**Highlights:** Bite-sized lessons for all 8 CISSP domains, Visual diagrams for key concepts, 320 multiple-choice practice questions, Timed mock exam, Flashcards with spaced repetition, Searchable glossary, Progress tracking and weak-spot review

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Locked In! CISSP Unlock | $14.99 | one-time |


## Frequently asked questions

### Is Abacus Practice free?

Abacus Practice is free to download, with no in-app purchases.

### Is Locked In free?

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

### Do Abacus Practice or Locked In have ads?

Neither Abacus Practice nor Locked In shows ads.

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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.*