# Penometer vs Boulder Strength

The clearest difference is update cadence: Penometer at fortnightly against Boulder Strength's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Penometer sells 3 in-app purchases, starting at $4.99 per month and Boulder Strength sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Penometer ships an update fortnightly, Boulder Strength every 3 months. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Penometer | Boulder Strength |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/penometer/id1561621238/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Freemium | — |
| Size | 16 MB | 36 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [TotalContent](https://appshunter.io/developer/1542541643) | [Dylan Stables](https://appshunter.io/developer/1886824134) |

## What reviewers say

### Penometer

[App page](https://appshunter.io/ios/app/penometer/id1561621238)

Measure and track your body size metrics over time. Compare your measurements to national and global averages, and gain insights with a built-in analysis tool. Your data is kept private and secure.

**Highlights:** Measure length, width, and girth, Track changes over time with graphs, Compare size to global and national averages, Micropenis analysis tool, Private and secure data storage, Unlimited measurement history (Premium), Advanced trend analysis (Premium)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $4.99 | per month |
| Full Access | $29.99 | per year |
| Full Access | $49.99 | one-time |


### Boulder Strength

[App page](https://appshunter.io/ios/app/boulder-strength/id6769417276)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Annual | $39.99 | per year |


## Frequently asked questions

### Is Penometer free?

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

### Is Boulder Strength free?

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

### Do Penometer or Boulder Strength have ads?

Neither Penometer nor Boulder Strength shows ads.

### Which is updated more often, Penometer or Boulder Strength?

Penometer ships an update fortnightly, and Boulder Strength every 3 months. Most recently, Penometer was updated on September 14, 2026 and Boulder Strength on September 21, 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.*