# Gym Day vs Optimability

The clearest difference is in-app purchases: Optimability at none against Gym Day's 6. Optimability also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Gym Day sells 6 in-app purchases, starting at $4.99 per month. Optimability asks for nothing beyond the download.

Gym Day ships an update weekly, Optimability every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Gym Day | Optimability |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.4K ratings)](https://appshunter.io/ios/app/gym-day-workout-routine-and-log/id1409190654/reviews)** | — |
| Number of ratings | **1.4K** | — |
| Positive reviews | 89.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 159 MB | 25 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Anthony Ng](https://appshunter.io/developer/1409190653) | [Optimability Performance Solutions Inc.](https://appshunter.io/developer/6811428185) |

## What reviewers say

### Gym Day

[App page](https://appshunter.io/ios/app/gym-day-workout-routine-and-log/id1409190654)

Easily plan, log, and track your weightlifting workouts. Create custom routines or use built-in plans, and visualize your progress with detailed charts. This app simplifies strength training for all levels.

**Highlights:** Create custom workout plans, Log reps and weights, Built-in workout schedules, Visualize progress with charts, Exercise library with instructions, Rest timer, Plate calculator

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Coach Subscription | $4.99 | per month |
| Premium Monthly Subscription | $5.99 | per month |
| Premium Annual Subscription | $29.99 | per year |
| Annual Coach Subscription | $34.99 | per year |
| Premium | $9.99 | one-time |
| Premium Lifetime | $79.99 | one-time |

**What reviewers like**

- 🚀 Most complete training app
- 👍 Easy to use with lots of features
- 👍 Customizable workouts and plans
- 👍 Effective training programs
- 👍 Constantly updated with user feedback

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔋 No Apple Watch integration
- 🔋 Lack of ability to share workouts with friends
- 🔋 Limited cardio and bodyweight exercises

**Reported bugs**

- Inconsistent units when switching between metric and imperial
- Pie chart not accurately reflecting muscle group balance
- Workout notes field has poor visibility in dark mode

**Requested features**

- Add ability to save multiple workout plans
- Improve superset and exercise reordering functionality
- Integrate with Apple Health and Strava
- Add more advanced exercise options (e.g., landmine, cable)
- Implement a warm-up set protocol for programs


### Optimability

[App page](https://appshunter.io/ios/app/optimability/id6811428183)

**In-app purchases:** none


## Frequently asked questions

### Is Gym Day free?

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

### Is Optimability free?

Optimability is free to download, with no in-app purchases.

### Do Gym Day or Optimability have ads?

Neither Gym Day nor Optimability shows ads.

### Which is updated more often, Gym Day or Optimability?

Gym Day ships an update weekly, and Optimability every 4 days. Most recently, Gym Day was updated on November 3, 2026 and Optimability on October 31, 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.*