# 1RM 계산기 vs HIGHTEMP

The clearest difference is in-app purchases: 1RM 계산기 at none against HIGHTEMP's 10. HIGHTEMP's advantage is update cadence (daily vs weekly) and iOS requirement (15.0 vs 17.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. HIGHTEMP sells 10 one-off in-app purchases. 1RM 계산기 asks for nothing beyond the download.

1RM 계산기 ships an update weekly, HIGHTEMP daily. The most recent releases landed on October 27, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | 1RM 계산기 | HIGHTEMP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 0 MB | 85 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JISU LEE](https://appshunter.io/developer/1676174439) | [NEWPEAK CO., LTD.](https://appshunter.io/developer/6786673795) |

## What reviewers say

### 1RM 계산기

[App page](https://appshunter.io/ios/app/1rm-1rm-calculator/id6695736929)

This app calculates your one-rep max (1RM) using the Epley formula. Simply input your weight lifted and the number of repetitions performed to estimate your maximum strength.

**Highlights:** 1RM calculation, Epley formula, Weight input, Repetition input, Strength estimation

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

**In-app purchases:** none


### HIGHTEMP

[App page](https://appshunter.io/ios/app/hightemp/id6786673403)

This app provides personalized workout routines and meal plans based on your fitness goals and experience. Track your progress, log exercises with detailed notes, and receive one-on-one feedback from trainers. Access a library of fitness classes to enhance your training.

**Highlights:** Personalized daily routines, Exercise logging with rest timer, Customizable meal plans, 1:1 trainer feedback, Extensive class library, Progress tracking journal

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Class 12-Month Upgrade | $19.99 | one-time |
| Full Upgrade: 2 Chapters | $19.99 | one-time |
| 가슴·팔 90일 이용권 | $59.99 | one-time |
| 어깨·하체 90일 이용권 | $59.99 | one-time |
| Back & Prep 90-Day Access | $59.99 | one-time |
| Chest & Arms 90-Day Access | $59.99 | one-time |
| Shoulder & Lower Body 90-Day Access | $59.99 | one-time |
| Full Class 12-Month Upgrade | $79.99 | one-time |
| Full Upgrade: 1 Chapter | $99.99 | one-time |
| Full Class 12-Month Access | $149.99 | one-time |


## Frequently asked questions

### Is 1RM 계산기 free?

1RM 계산기 is free to download, with no in-app purchases.

### Is HIGHTEMP free?

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

### Do 1RM 계산기 or HIGHTEMP have ads?

Neither 1RM 계산기 nor HIGHTEMP shows ads.

### Which is updated more often, 1RM 계산기 or HIGHTEMP?

1RM 계산기 ships an update weekly, and HIGHTEMP daily. Most recently, 1RM 계산기 was updated on October 27, 2026 and HIGHTEMP on November 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.*