# RepKit Workout Tracker Gym Log vs MassBuilder

The clearest difference is update cadence: MassBuilder at daily against RepKit Workout Tracker Gym Log's every 4 months. MassBuilder also leads on device support (3 vs 1). RepKit Workout Tracker Gym Log's advantage is iOS requirement (18.5 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. RepKit Workout Tracker Gym Log sells 3 in-app purchases, starting at $5.99 per month and MassBuilder sells 8 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

RepKit Workout Tracker Gym Log ships an update every 4 months, MassBuilder daily. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | RepKit Workout Tracker Gym Log | MassBuilder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/massbuilder-workout-tracker/id6818775727/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | — | Freemium |
| Size | 110 MB | 85 MB |
| Requires iOS | **18.5** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Vincent CORRU](https://appshunter.io/developer/1786117888) | [Oskar Ege](https://appshunter.io/developer/561555492) |

## What reviewers say

### RepKit Workout Tracker Gym Log

[App page](https://appshunter.io/ios/app/repkit-workout-tracker-gym-log/id6749794058)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Annual | $34.99 | per year |
| Lifetime Plan | $59.99 | one-time |


### MassBuilder

[App page](https://appshunter.io/ios/app/massbuilder-workout-tracker/id6818775727)

This app helps you build muscle by logging sets, planning weight increases, and checking your form with your camera. It offers daily challenges, workout programs, and detailed progress tracking with charts and photos.

**Highlights:** One-tap set logging, Automated weight progression, Camera-based form checking, Daily exercise challenges, Customizable workout programs, Detailed progress charts, Nutrition tracking

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MassBuilder Pro | $9.99 | per month |
| MassBuilder Coach | $20.00 | per month |
| MassBuilder Pro | $49.99 | per year |
| Give up today | $1.99 | one-time |
| Give up today | $3.99 | one-time |
| Give up today | $7.99 | one-time |
| Give up today | $14.99 | one-time |
| MassBuilder Pro Lifetime | $74.99 | one-time |


## Frequently asked questions

### Is RepKit Workout Tracker Gym Log free?

RepKit Workout Tracker Gym Log is free to download, with in-app purchases available.

### Is MassBuilder free?

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

### Do RepKit Workout Tracker Gym Log or MassBuilder have ads?

Neither RepKit Workout Tracker Gym Log nor MassBuilder shows ads.

### Which is updated more often, RepKit Workout Tracker Gym Log or MassBuilder?

RepKit Workout Tracker Gym Log ships an update every 4 months, and MassBuilder daily. Most recently, RepKit Workout Tracker Gym Log was updated on November 5, 2026 and MassBuilder on November 6, 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.*