# 1RM Calculator vs HABIT

The clearest difference is update cadence: HABIT at fortnightly against 1RM Calculator's every 4 months. 1RM Calculator's advantage is ratings volume (116 vs 1). On price, rating, review sentiment 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 and HABIT sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for 1RM Calculator against 5.0 for HABIT. That said, the two scores are not equally well evidenced: 1RM Calculator has 116 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

1RM Calculator ships an update every 4 months, HABIT fortnightly. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 1RM Calculator | HABIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (116 ratings)](https://appshunter.io/ios/app/1rm-calculator/id1566775126/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/habit-break-the-loop/id6766004821/reviews)** |
| Number of ratings | **116** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 28 MB | 51 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Yuri Koshiishi](https://appshunter.io/developer/1566775128) | [Barbara Pruett](https://appshunter.io/developer/1896159660) |

## 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 |


### HABIT

[App page](https://appshunter.io/ios/app/habit-break-the-loop/id6766004821)

This app helps you break unwanted habits by creating private, on-device plans. It uses daily check-ins and a growing virtual forest to visualize your progress and consistency.

**Highlights:** Private on-device planning, Daily check-ins, Growing virtual forest visualization, If-then habit planning, Local and optional online coach, Smart local reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HABIT Pro | $9.99 | per month |
| HABIT Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is 1RM Calculator free?

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

### Is HABIT free?

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

### Which has better reviews, 1RM Calculator or HABIT?

HABIT is rated higher. 1RM Calculator averages 4.9 out of 5 from 116 ratings, while HABIT averages 5.0 from 1 ratings.

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

Neither 1RM Calculator nor HABIT shows ads.

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

1RM Calculator ships an update every 4 months, and HABIT fortnightly. Most recently, 1RM Calculator was updated on October 16, 2026 and HABIT on October 9, 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.*