# Rastrear Concept vs Which One? Compare Prices

The clearest difference is in-app purchases: Rastrear Concept at none against Which One? Compare Prices's 2. Rastrear Concept also leads on update cadence (every 2 weeks vs every 6 weeks). Which One? Compare Prices's advantage is iOS requirement (9.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Which One? Compare Prices sells 2 one-off in-app purchases. Rastrear Concept asks for nothing beyond the download.

Rastrear Concept ships an update every 2 weeks, Which One? Compare Prices every 6 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Rastrear Concept | Which One? Compare Prices |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | — | Free |
| Size | 52 MB | 38 MB |
| Requires iOS | 18.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | +4 |
| Developer | [Concept Tecnologia e Engenharia de Software](https://appshunter.io/developer/1128135707) | [Lucas Yamashita](https://appshunter.io/developer/916405696) |

## What reviewers say

### Rastrear Concept

[App page](https://appshunter.io/ios/app/rastrear-concept/id1128135708)

**Features:** Vision Pro support

**In-app purchases:** none


### Which One? Compare Prices

[App page](https://appshunter.io/ios/app/which-one-compare-prices/id1287834126)

This app helps you make smart purchasing decisions by comparing prices of different product sizes and quantities. It quickly calculates the best value, ensuring you save money on everyday items. An Apple Watch integration allows for convenient comparisons directly from your wrist.

**Highlights:** Price comparison by volume, Quantity comparison, Best value calculation, Apple Watch integration, Save money on purchases

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Premium | $1.99 | one-time |


## Frequently asked questions

### Is Rastrear Concept free?

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

### Is Which One? Compare Prices free?

Which One? Compare Prices is free to download, with in-app purchases available.

### Do Rastrear Concept or Which One? Compare Prices have ads?

Neither Rastrear Concept nor Which One? Compare Prices shows ads.

### Which is updated more often, Rastrear Concept or Which One? Compare Prices?

Rastrear Concept ships an update every 2 weeks, and Which One? Compare Prices every 6 weeks. Most recently, Rastrear Concept was updated on November 6, 2026 and Which One? Compare Prices on November 3, 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.*