# Metrify vs BrainBoost

The clearest difference is review sentiment: BrainBoost at 100% against Metrify's 0%. BrainBoost also leads on rating (5.0 vs 3.9) and ads (none vs shown). Metrify's advantage is ratings volume (7 vs 2). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Metrify sells 3 in-app purchases, starting at $0.99 per month and BrainBoost sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

BrainBoost holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews point the same way: 0% of Metrify's written reviews are positive against 100% of BrainBoost's.

Metrify ships an update every 9 days, BrainBoost every 2 weeks. The most recent releases landed on November 13, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Metrify | BrainBoost |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/metrify/id975992317/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brainboost-chat-business-tool/id1673345190/reviews)** |
| Number of ratings | **7** | 2 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 8 MB | 17 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tsuyoshi Niwa](https://appshunter.io/developer/888556976) | [Jorge Gregorio Martin Bello](https://appshunter.io/developer/567988393) |

## What reviewers say

### Metrify

[App page](https://appshunter.io/ios/app/metrify/id975992317)

Effortlessly convert between imperial and metric units, and currencies, with this clean and fast utility. Ideal for everyday tasks like cooking, shopping, and travel, it simplifies comparisons and calculations.

**Highlights:** Imperial to metric conversion, Currency conversion, Price comparison, Supports cooking, shopping, travel, Distraction-free design

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Yearly Subscription | $9.99 | per year |
| Lifetime Pro | $39.99 | one-time |


### BrainBoost

[App page](https://appshunter.io/ios/app/brainboost-chat-business-tool/id1673345190)

This AI chatbot leverages GPT-3 to provide business insights and answers across various tech and finance fields. It helps generate ideas, improve customer service, and offer product recommendations, all powered by advanced natural language processing.

**Highlights:** AI-powered business chatbot, GPT-3 integration, Idea generation, Customer service automation, Product recommendations, Business insights

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 4 Credits | $2.99 | one-time |
| 20 Credits | $9.99 | one-time |
| 40 Credits | $19.99 | one-time |
| 100 Credits | $39.99 | one-time |


## Frequently asked questions

### Is Metrify free?

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

### Is BrainBoost free?

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

### Which has better reviews, Metrify or BrainBoost?

BrainBoost is rated higher. Metrify averages 3.9 out of 5 from 7 ratings, while BrainBoost averages 5.0 from 2 ratings.

### Do Metrify or BrainBoost have ads?

Metrify shows ads; BrainBoost does not.

### Which is updated more often, Metrify or BrainBoost?

Metrify ships an update every 9 days, and BrainBoost every 2 weeks. Most recently, Metrify was updated on November 13, 2026 and BrainBoost 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.*