# Injectly vs PeptideBros

The clearest difference is in-app purchases: Injectly at none against PeptideBros's 2. Injectly also leads on ratings volume (507 vs 5). PeptideBros's advantage is review sentiment (100% vs 87%). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. PeptideBros sells 2 in-app purchases, starting at $4.99 per month. Injectly asks for nothing beyond the download.

PeptideBros holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Injectly has 507 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 87% of Injectly's written reviews are positive against 100% of PeptideBros's.

Injectly ships an update every 2 weeks, PeptideBros every 3 weeks. The most recent releases landed on November 12, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Injectly | PeptideBros |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (507 ratings)](https://appshunter.io/ios/app/injectly/id6745237189/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/peptidebros/id6762238490/reviews)** |
| Number of ratings | **507** | 5 |
| Positive reviews | 86.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 48 MB | 43 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Matthias Gattermeier](https://appshunter.io/developer/1811476841) | [Adam Farrar](https://appshunter.io/developer/1832870508) |

## What reviewers say

### Injectly

[App page](https://appshunter.io/ios/app/injectly/id6745237189)

This app helps you track injectable medications, including weight, peptides, and GLP. Log injections, set reminders, and view your history. Optional account syncs data across devices and offers advanced scheduling. Gain insights into medication levels and active doses.

**Highlights:** Log injectable medication doses, Set custom reminders, View injection history (calendar/list), Cross-device data sync, Advanced scheduling options, Serum concentration insights, Data export and deletion

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

**In-app purchases:** none


### PeptideBros

[App page](https://appshunter.io/ios/app/peptidebros/id6762238490)

This app helps researchers manage and track their peptide injection protocols. It allows for custom protocol creation, detailed injection logging, and monitoring of progress over time. Features include streak tracking, adherence analytics, and an in-app peptide encyclopedia.

**Highlights:** Custom peptide protocol creation, Detailed injection logging, Automatic injection site rotation, Streak tracking for motivation, Adherence and analytics reporting, In-app peptide encyclopedia, Journal and notes for research experience

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lab Notebook Monthly | $4.99 | per month |
| Lab Notebook (Annual) | $39.99 | per year |


## Frequently asked questions

### Is Injectly free?

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

### Is PeptideBros free?

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

### Which has better reviews, Injectly or PeptideBros?

PeptideBros is rated higher. Injectly averages 4.8 out of 5 from 507 ratings, while PeptideBros averages 5.0 from 5 ratings.

### Do Injectly or PeptideBros have ads?

Neither Injectly nor PeptideBros shows ads.

### Which is updated more often, Injectly or PeptideBros?

Injectly ships an update every 2 weeks, and PeptideBros every 3 weeks. Most recently, Injectly was updated on November 12, 2026 and PeptideBros on November 13, 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.*