# VisiGrab vs Preparo

The clearest difference is in-app purchases: Preparo at none against VisiGrab's 1. VisiGrab's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. VisiGrab sells 1 one-off in-app purchase. Preparo asks for nothing beyond the download.

VisiGrab ships an update fortnightly, Preparo every 3 weeks. The most recent releases landed on September 18, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | VisiGrab | Preparo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (74 ratings)](https://appshunter.io/ios/app/visigrab-algorithms-and-dsa/id1484525469/reviews)** | — |
| Number of ratings | **74** | — |
| Positive reviews | 88.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 304 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ievgen Ovsii](https://appshunter.io/developer/1484523214) | [Gowtham Ravichandran](https://appshunter.io/developer/1742608108) |

## What reviewers say

### VisiGrab

[App page](https://appshunter.io/ios/app/visigrab-algorithms-and-dsa/id1484525469)

This app offers an interactive, visual guide to mastering algorithms and data structures. It transforms complex concepts into intuitive experiences with dynamic visualizations and step-by-step explanations. Prepare for technical interviews and enhance your coding skills with comprehensive coverage and code examples.

**Highlights:** Interactive visualizations, Step-by-step algorithm unfolding, Comprehensive DSA coverage, Code examples in Python and Java, Gamified learning, Offline access, Lifetime access

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access — All Content | $6.99 | one-time |


### Preparo

[App page](https://appshunter.io/ios/app/preparo-tech-interview-prep/id6499164067)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VisiGrab free?

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

### Is Preparo free?

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

### Do VisiGrab or Preparo have ads?

Neither VisiGrab nor Preparo shows ads.

### Which is updated more often, VisiGrab or Preparo?

VisiGrab ships an update fortnightly, and Preparo every 3 weeks. Most recently, VisiGrab was updated on September 18, 2026 and Preparo on May 16, 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.*