# DoserX vs Protokit

The clearest difference is in-app purchases: DoserX at none against Protokit's 1. DoserX also leads on iOS requirement (13.0 vs 15.1). Protokit's advantage is update cadence (every 6 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Protokit sells 1 one-off in-app purchase. DoserX asks for nothing beyond the download.

DoserX ships an update every 2 months, Protokit every 6 days. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | DoserX | Protokit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protokit-peptide-tracker/id6781553885/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 38 MB | 50 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Aqua-Trend](https://appshunter.io/developer/1612493517) | [Niklas Almstedt](https://appshunter.io/developer/6781553887) |

## What reviewers say

### DoserX

[App page](https://appshunter.io/ios/app/doserx/id1612493515)

**In-app purchases:** none


### Protokit

[App page](https://appshunter.io/ios/app/protokit-peptide-tracker/id6781553885)

Log and track peptide cycles, doses, and vials with a powerful, clean interface. Features include a reconstitution calculator, smart scheduling with reminders, and detailed statistics on adherence and progress. Integrates with BodyMetrics for correlating lab results with your protocol.

**Highlights:** Track peptides, blends, pre-mixed vials, and tablets, Reconstitution calculator for accurate dosing, Smart scheduling with custom reminders, Detailed statistics on adherence and progress, Injection site logging with rotation reminders, BodyMetrics integration for lab data correlation, Customizable themes and views

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pep Tracker Pro – Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is DoserX free?

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

### Is Protokit free?

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

### Do DoserX or Protokit have ads?

Neither DoserX nor Protokit shows ads.

### Which is updated more often, DoserX or Protokit?

DoserX ships an update every 2 months, and Protokit every 6 days. Most recently, DoserX was updated on September 23, 2026 and Protokit on September 19, 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.*