# 1RM Calculator vs TrailDog

The clearest difference is in-app purchases: TrailDog at none against 1RM Calculator's 3. TrailDog also leads on update cadence (every 6 days vs every 4 months). 1RM Calculator's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. 1RM Calculator sells 3 in-app purchases, starting at $1.99 per month. TrailDog asks for nothing beyond the download.

1RM Calculator ships an update every 4 months, TrailDog every 6 days. The most recent releases landed on October 25, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 1RM Calculator | TrailDog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (126 ratings)](https://appshunter.io/ios/app/1rm-calculator/id1566775126/reviews)** | — |
| Number of ratings | **126** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 28 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuri Koshiishi](https://appshunter.io/developer/1566775128) | [JACK OLIVER MECKLENBURGH](https://appshunter.io/developer/6789243954) |

## What reviewers say

### 1RM Calculator

[App page](https://appshunter.io/ios/app/1rm-calculator/id1566775126)

Easily calculate your one-rep max (1RM) strength with this app. It supports RPE input and allows you to estimate rep maxes based on your 1RM. Track your progress by saving your 1RM history for different exercises.

**Highlights:** 1RM calculation with RPE, Rep max estimation, Save 1RM history, Customizable exercises, Dark theme

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Rep Max Pro Monthly | $1.99 | per month |
| 1 Rep Max Pro Annual | $9.99 | per year |
| 1 Rep Max Pro Lifetime | $29.99 | one-time |


### TrailDog

[App page](https://appshunter.io/ios/app/traildog/id6789243952)

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

**In-app purchases:** none


## Frequently asked questions

### Is 1RM Calculator free?

1RM Calculator is free to download, with in-app purchases available.

### Is TrailDog free?

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

### Do 1RM Calculator or TrailDog have ads?

Neither 1RM Calculator nor TrailDog shows ads.

### Which is updated more often, 1RM Calculator or TrailDog?

1RM Calculator ships an update every 4 months, and TrailDog every 6 days. Most recently, 1RM Calculator was updated on October 25, 2026 and TrailDog on October 1, 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.*