# Focus Battery vs ProteinLog

The clearest difference is iOS requirement: Focus Battery at 15.1 against ProteinLog's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Focus Battery sells 2 in-app purchases, starting at $9.99 per month and ProteinLog sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Focus Battery | ProteinLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/focus-battery/id6755793734/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Subscription | — |
| Size | 96 MB | 11 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oleksandr Demchenko](https://appshunter.io/developer/1856395168) | [Andre Destro](https://appshunter.io/developer/850379919) |

## What reviewers say

### Focus Battery

[App page](https://appshunter.io/ios/app/focus-battery/id6755793734)

Understand your daily focus, mental energy, and peak productivity times. Track how ADHD medications may impact your day and plan your work and breaks around your mind's natural rhythms. Ideal for those with ADHD or seeking to optimize productivity.

**Highlights:** Daily focus forecast, ADHD medication tracking, Mental energy monitoring, Focus metrics and insights, Deep work session planner, Journaling and trend analysis, Focus tests and music

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Focus Battery Pro — Monthly | $9.99 | per month |
| Focus Battery Pro – Annual | $49.99 | per year |


### ProteinLog

[App page](https://appshunter.io/ios/app/proteinlog-protein-tracker/id6760777475)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProteinLog Premium (Monthly) | $2.99 | per month |
| ProteinLog Premium (Yearly) | $17.99 | per year |


## Frequently asked questions

### Is Focus Battery free?

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

### Is ProteinLog free?

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

### Do Focus Battery or ProteinLog have ads?

Neither Focus Battery nor ProteinLog shows ads.

### Which is updated more often, Focus Battery or ProteinLog?

Focus Battery ships an update every 4 days, and ProteinLog every 4 days. Most recently, Focus Battery was updated on October 24, 2026 and ProteinLog on October 25, 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.*