# Baseline vs Bio Log

The clearest difference is iOS requirement: Baseline at 15.1 against Bio Log's 17.0. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Baseline sells 2 in-app purchases, starting at $4.99 per month and Bio Log sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Baseline against 5.0 for Bio Log. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Baseline ships an update weekly, Bio Log every 2 weeks. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Baseline | Bio Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/baseline-peptide-journal/id6762418903/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/bio-log-peptide-tracker/id6773158529/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 37 MB | 5 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Jules Martin](https://appshunter.io/developer/1894098292) | [alexander rieger](https://appshunter.io/developer/1839352038) |

## What reviewers say

### Baseline

[App page](https://appshunter.io/ios/app/baseline-peptide-journal/id6762418903)

This app helps you conduct personal research on health protocols by tracking your progress and analyzing results. It allows you to set hypotheses, log daily check-ins, and view clear reports comparing your baseline to active phases. Designed for privacy, all data is stored locally on your device.

**Highlights:** Personal research journal, Hypothesis setting, Daily check-ins, Baseline and active phase tracking, Trial reports with trend lines, Local-first data storage, CSV data export

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Baseline Pro Monthly | $4.99 | per month |
| Baseline Pro Yearly | $39.99 | per year |


### Bio Log

[App page](https://appshunter.io/ios/app/bio-log-peptide-tracker/id6773158529)

This app helps you meticulously track peptide doses, vial details, and personal notes in a centralized journal. It offers features for logging entries, managing injection sites, and reviewing historical data. Optional AI assistance can help organize notes and generate summaries.

**Highlights:** Dose and vial tracking, Injection site mapping, Journaling with notes, History search and filtering, Vial inventory management, AI-powered summaries, Data export

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bio Log Membership | $3.99 | per month |


## Frequently asked questions

### Is Baseline free?

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

### Is Bio Log free?

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

### Which has better reviews, Baseline or Bio Log?

Baseline and Bio Log are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Baseline or Bio Log have ads?

Neither Baseline nor Bio Log shows ads.

### Which is updated more often, Baseline or Bio Log?

Baseline ships an update weekly, and Bio Log every 2 weeks. Most recently, Baseline was updated on October 31, 2026 and Bio Log on November 10, 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.*