# Stackr vs PepLog

The clearest difference is in-app purchases: PepLog at none against Stackr's 7. PepLog also leads on review sentiment (100% vs 72%). Stackr's advantage is update cadence (every 4 days vs every 2 weeks) and chart position (#195 vs unranked). On price, rating, ads and device support there is nothing between them.

Both are free to download. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. PepLog asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.4 for Stackr against 4.4 for PepLog. That said, the two scores are not equally well evidenced: Stackr has 143 ratings behind it against 25, so its average is the more settled of the two. Written reviews are what separate them: 72% of Stackr's written reviews are positive against 100% of PepLog's.

Stackr ships an update every 4 days, PepLog every 2 weeks. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Stackr | PepLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (143 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) | [4.4 (25 ratings)](https://appshunter.io/ios/app/peplog-peptide-tracker/id6790928604/reviews) |
| Number of ratings | **143** | 25 |
| Positive reviews | 72.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Monetization | Freemium | **Free** |
| Best chart rank | **#195** | — |
| Size | 88 MB | 28 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 17+ |
| Developer | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) | [Moises Olivares](https://appshunter.io/developer/6794804081) |

## What reviewers say

### Stackr

[App page](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587)

**Currently charting:** #195 Top Free · Health & Fitness (US App Store)

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

**Highlights:** Log peptide and GLP-1 doses, Track vials, pens, and other supplies, Smart reminders for next doses, Home screen widgets, Estimated active level charts, Multi-peptide stack tracking, Reference pages for common compounds

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackr+ Weekly | $7.99 | per 7 days |
| Monthly | $12.99 | per month |
| Stackr+ Yearly | $29.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $59.99 | per year |
| Yearly | $69.99 | per year |


### PepLog

[App page](https://appshunter.io/ios/app/peplog-peptide-tracker/id6790928604)

This app helps users manage peptide protocols by providing a private, on-device logbook. Quickly record doses, track vial usage, monitor consistency with streaks and history, and log weight over time. It also includes a unit converter for precise measurements.

**Highlights:** Log doses in seconds, Track vial contents and remaining amounts, Monitor logging consistency and history, Chart weight over time with goals, Unit converter for syringe measurements, Private, on-device data storage

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

**In-app purchases:** none


## Frequently asked questions

### Is Stackr free?

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

### Is PepLog free?

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

### Which has better reviews, Stackr or PepLog?

Stackr and PepLog are both rated 4.4 out of 5 on the App Store, from 143 and 25 ratings respectively.

### Do Stackr or PepLog have ads?

Neither Stackr nor PepLog shows ads.

### Which is updated more often, Stackr or PepLog?

Stackr ships an update every 4 days, and PepLog every 2 weeks. Most recently, Stackr was updated on October 13, 2026 and PepLog on October 8, 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.*