# Fiber Coach vs Engine

Fiber Coach and Engine are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Fiber Coach sells 5 in-app purchases, starting at $4.99 per 7 days and Engine sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Fiber Coach ships an update weekly, Engine every 10 days. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Fiber Coach | Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fiber-coach-workout-planner/id6751199724/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free with in-app purchases | — |
| Size | 74 MB | 54 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Grim Works Sociedad Limitada](https://appshunter.io/developer/1797044004) | [Les Nants](https://appshunter.io/developer/1807100390) |

## What reviewers say

### Fiber Coach

[App page](https://appshunter.io/ios/app/fiber-coach-workout-planner/id6751199724)

This app creates personalized workout plans for strength training, muscle building, and weight loss. It adapts to your goals, fitness level, and available equipment, offering smart weight recommendations and real-time adjustments for effective progress.

**Highlights:** Personalized workout plans, Structured training programs, Smart progression and tracking, Adaptive training, Gym and home workouts, Extensive exercise library, Workout stats and progress charts

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fiber Premium Weekly | $4.99 | per 7 days |
| Fiber Premium Monthly | $12.99 | per month |
| Fiber Premium Quarterly | $29.99 | per 3 months |
| Fiber Premium Discount | $34.99 | per year |
| Fiber Premium Yearly | $59.99 | per year |


### Engine

[App page](https://appshunter.io/ios/app/engine-boost-your-vo2max/id6756730497)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $9.99 | per month |
| Yearly Plan | $39.99 | per year |


## Frequently asked questions

### Is Fiber Coach free?

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

### Is Engine free?

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

### Do Fiber Coach or Engine have ads?

Both Fiber Coach and Engine show ads.

### Which is updated more often, Fiber Coach or Engine?

Fiber Coach ships an update weekly, and Engine every 10 days. Most recently, Fiber Coach was updated on October 3, 2026 and Engine on September 30, 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.*