# PeptideJournal vs ColdStreak

The clearest difference is price: ColdStreak at Free against PeptideJournal's $5.99. ColdStreak also leads on rating (5.0 vs 4.3) and review sentiment (100% vs 63%). PeptideJournal's advantage is in-app purchases (none vs 5) and ratings volume (20 vs 5). On ads there is nothing between them.

ColdStreak is free to download; PeptideJournal costs $5.99 up front. ColdStreak sells 5 in-app purchases, starting at $3.99 per month. PeptideJournal asks for nothing beyond the download.

ColdStreak holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 20 and 5 respectively. Written reviews point the same way: 63% of PeptideJournal's written reviews are positive against 100% of ColdStreak's.

PeptideJournal ships an update weekly, ColdStreak every 2 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | PeptideJournal | ColdStreak |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [4.3 (20 ratings)](https://appshunter.io/ios/app/peptidejournal/id6751492210/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/coldstreak/id6762150604/reviews)** |
| Number of ratings | **20** | 5 |
| Positive reviews | 62.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 12 MB | 82 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Christopher Madrid](https://appshunter.io/developer/1835373775) | [Kevin Ellis](https://appshunter.io/developer/1893131184) |

## What reviewers say

### PeptideJournal

[App page](https://appshunter.io/ios/app/peptidejournal/id6751492210)

This app helps you precisely calculate peptide doses, manage your inventory, and track your usage history. It offers smart scheduling and detailed analytics, all while keeping your data private and secure on your device.

**Highlights:** Precision dose calculation, Reconstitution simulation, Inventory management, Dose history tracking, Usage analytics, Smart scheduling, Calendar integration

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

**In-app purchases:** none


### ColdStreak

[App page](https://appshunter.io/ios/app/coldstreak/id6762150604)

Track your cold plunges and build a consistent habit with this app. Log your sessions, earn achievements, and discover new cold water spots. Upgrade for advanced features and unlimited history.

**Highlights:** Cold plunge timer with automatic score calculation, Log temperature, duration, and location, Earn badges and achievements for consistency, Community leaderboards and location map, Offline functionality with data syncing, Optional Pro subscription for advanced features

**Features:** Apple Watch app

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ColdStreak Pro Monthly | $3.99 | per month |
| 1 Verified Location | $29.99 | per month |
| Verified Business 3 Locations | $79.99 | per month |
| Up to 10 Verified Locations | $129.99 | per month |
| ColdStreak Pro - Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is PeptideJournal free?

PeptideJournal costs $5.99, with no in-app purchases.

### Is ColdStreak free?

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

### Which has better reviews, PeptideJournal or ColdStreak?

ColdStreak is rated higher. PeptideJournal averages 4.3 out of 5 from 20 ratings, while ColdStreak averages 5.0 from 5 ratings.

### Do PeptideJournal or ColdStreak have ads?

Neither PeptideJournal nor ColdStreak shows ads.

### Which is updated more often, PeptideJournal or ColdStreak?

PeptideJournal ships an update weekly, and ColdStreak every 2 days. Most recently, PeptideJournal was updated on October 24, 2026 and ColdStreak on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*