# Body Battery vs Sauna Tracker & Session Log

The clearest difference is in-app purchases: Sauna Tracker & Session Log at none against Body Battery's 3. Body Battery's advantage is update cadence (every 2 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Body Battery sells 3 in-app purchases, starting at $4.99 per month. Sauna Tracker & Session Log asks for nothing beyond the download.

Body Battery ships an update every 2 weeks, Sauna Tracker & Session Log every 4 months. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Body Battery | Sauna Tracker & Session Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (23 ratings)](https://appshunter.io/ios/app/body-battery/id6749822861/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nicola Eusebi](https://appshunter.io/developer/737311863) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### Body Battery

[App page](https://appshunter.io/ios/app/body-battery/id6749822861)

Understand your daily energy, stress, and sleep with clear scores and trends. This app translates your health data into actionable guidance to help you train smarter, recover better, and feel your best.

**Highlights:** Daily energy level score, Readiness and recovery insights, Stress level tracking, Sleep duration and consistency analysis, 7-day trend charts, Connects with Apple Health

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Weekly | $5.99 | per 7 days |
| Pro Yearly | $29.99 | per year |


### Sauna Tracker & Session Log

[App page](https://appshunter.io/ios/app/sauna-tracker-and-session-log/id6772261621)

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

**In-app purchases:** none


## Frequently asked questions

### Is Body Battery free?

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

### Is Sauna Tracker & Session Log free?

Sauna Tracker & Session Log is free to download, with no in-app purchases.

### Do Body Battery or Sauna Tracker & Session Log have ads?

Neither Body Battery nor Sauna Tracker & Session Log shows ads.

### Which is updated more often, Body Battery or Sauna Tracker & Session Log?

Body Battery ships an update every 2 weeks, and Sauna Tracker & Session Log every 4 months. Most recently, Body Battery was updated on October 15, 2026 and Sauna Tracker & Session Log on October 13, 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.*