# PinPoint TRT vs Marker · Blood Test Tracker

The clearest difference is in-app purchases: PinPoint TRT at none against Marker · Blood Test Tracker's 2. Marker · Blood Test Tracker's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Marker · Blood Test Tracker sells 2 in-app purchases, starting at $24.99 per year. PinPoint TRT asks for nothing beyond the download.

PinPoint TRT ships an update every 3 months, Marker · Blood Test Tracker every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PinPoint TRT | Marker · Blood Test Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pinpoint-trt/id6770177264/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 4 MB | 9 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Bayou Labs LLC](https://appshunter.io/developer/1896721974) | [Jan Zellerhoff](https://appshunter.io/developer/1878750371) |

## What reviewers say

### PinPoint TRT

[App page](https://appshunter.io/ios/app/pinpoint-trt/id6770177264)

This private iOS tracker helps men on testosterone replacement therapy log injections, medications, lab results, and symptoms. It visualizes serum testosterone levels with a pharmacokinetic model and offers optional local notifications for your schedule. All data is stored securely on your device.

**Highlights:** Log injections, doses, and sites, Track ancillary medications, Record lab results with editable ranges, Monitor symptoms and notes, Visualize serum testosterone levels, Optional local reminders, Sync with Apple HealthKit

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

**In-app purchases:** none


### Marker · Blood Test Tracker

[App page](https://appshunter.io/ios/app/marker-blood-test-tracker/id6791303820)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marker Pro (Annual) | $24.99 | per year |
| Marker Pro (Lifetime) | $44.99 | one-time |


## Frequently asked questions

### Is PinPoint TRT free?

PinPoint TRT is free to download, with no in-app purchases.

### Is Marker · Blood Test Tracker free?

Marker · Blood Test Tracker is free to download, with in-app purchases available.

### Do PinPoint TRT or Marker · Blood Test Tracker have ads?

Neither PinPoint TRT nor Marker · Blood Test Tracker shows ads.

### Which is updated more often, PinPoint TRT or Marker · Blood Test Tracker?

PinPoint TRT ships an update every 3 months, and Marker · Blood Test Tracker every 3 weeks. Most recently, PinPoint TRT was updated on October 24, 2026 and Marker · Blood Test Tracker 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.*