# Mass Building Program vs Proof90

The clearest difference is ads: Proof90 at none against Mass Building Program's shown. Proof90 also leads on update cadence (weekly vs every 46 months). Mass Building Program's advantage is iOS requirement (11.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Mass Building Program sells 9 one-off in-app purchases and Proof90 sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Mass Building Program ships an update every 46 months, Proof90 weekly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Mass Building Program | Proof90 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/mass-building-program/id1550724390/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 46 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 156 MB | 23 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Fitric](https://appshunter.io/developer/1545172045) | [Royal Nation LLC](https://appshunter.io/developer/1846033811) |

## What reviewers say

### Mass Building Program

[App page](https://appshunter.io/ios/app/mass-building-program/id1550724390)

This workout application focuses on maximizing muscle mass gain over a 4-week period. It utilizes heavy compound exercises to intensely train each muscle group multiple times weekly. The program aims to build strength, improve physique, and boost confidence.

**Highlights:** 4-week mass gain plan, Heavy compound exercises, Intense muscle group training, Focus on strength and physique, Promotes confidence and discipline

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Removal of advertisements | $0.99 | one-time |
| Dumbbell Workout Plan | $1.99 | one-time |
| Exercises for Beginners | $1.99 | one-time |
| Butt, Thighs and Legs | $1.99 | one-time |
| Six Pack Abs | $1.99 | one-time |
| Upper Body Workout | $1.99 | one-time |
| Build Bigger Arms | $1.99 | one-time |
| Building Muscle and Strength | $1.99 | one-time |
| Full Program Bundle | $4.99 | one-time |


### Proof90

[App page](https://appshunter.io/ios/app/proof90-90-day-challenge/id6813857145)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proof90 Pro (Monthly) | $9.99 | per month |
| Proof90 Pro (Annual) | $59.99 | per year |


## Frequently asked questions

### Is Mass Building Program free?

Mass Building Program is free to download, with in-app purchases available.

### Is Proof90 free?

Proof90 is free to download, with in-app purchases available.

### Do Mass Building Program or Proof90 have ads?

Mass Building Program shows ads; Proof90 does not.

### Which is updated more often, Mass Building Program or Proof90?

Mass Building Program ships an update every 46 months, and Proof90 weekly. Most recently, Mass Building Program was updated on October 9, 2026 and Proof90 on October 24, 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.*