# Smart Strength vs Clarity

The clearest difference is in-app purchases: Smart Strength at none against Clarity's 2. On price and iOS requirement there is nothing between them.

Both are free to download. Clarity sells 2 in-app purchases, starting at $2.99 per month. Smart Strength asks for nothing beyond the download.

## The numbers

| Metric | Smart Strength | Clarity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/clarity-caffeine-tracker/id6748916921/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Freemium |
| Size | 5 MB | 25 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 17+ |
| Developer | [Helmet Head Limited](https://appshunter.io/developer/1600256653) | [Nexus Nexus](https://appshunter.io/developer/1826114678) |

## What reviewers say

### Smart Strength

[App page](https://appshunter.io/ios/app/smart-strength/id1600256651)

**In-app purchases:** none


### Clarity

[App page](https://appshunter.io/ios/app/clarity-caffeine-tracker/id6748916921)

This app helps you understand the impact of caffeine on your sleep, energy, and focus. Log your intake quickly and visualize how caffeine's half-life affects your daily cycles and nighttime rest.

**Highlights:** Fast caffeine logging, Caffeine half-life tracking, Sleep and recovery insights, Focus and energy analysis, Daily and weekly insights

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clarity Plus - Monthly | $2.99 | per month |
| Clarity Plus - Yearly | $19.99 | per year |


## Frequently asked questions

### Is Smart Strength free?

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

### Is Clarity free?

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

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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.*