# Pump Fit vs NutrientOS

The clearest difference is in-app purchases: Pump Fit at none against NutrientOS's 2. Pump Fit also leads on update cadence (every 5 days vs fortnightly) and ratings volume (13 vs 1). NutrientOS's advantage is iOS requirement (15.0 vs 18.0). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. NutrientOS sells 2 in-app purchases, starting at $7.99 per month. Pump Fit asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Pump Fit against 5.0 for NutrientOS. That said, the two scores are not equally well evidenced: Pump Fit has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Pump Fit ships an update every 5 days, NutrientOS fortnightly. The most recent releases landed on September 13, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Pump Fit | NutrientOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (13 ratings)](https://appshunter.io/ios/app/pump-fit/id6757655790/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/nutrientos-calorie-tracker/id6765582312/reviews) |
| Number of ratings | **13** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 22 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Sam Bender](https://appshunter.io/developer/381126312) | [Jeremiyah Escobedo](https://appshunter.io/developer/1895999641) |

## What reviewers say

### Pump Fit

[App page](https://appshunter.io/ios/app/pump-fit/id6757655790)

This app guides you through tempo training with precise 4-phase rep structures and audio cues. Create custom workouts, track your progress, and build muscle with enhanced time under tension. It works offline and allows sharing routines with friends.

**Highlights:** 4-phase tempo training with timers, Custom workout creation and editing, Extensive exercise library, Workout history and weight tracking, Offline functionality, Workout sharing and community features

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

**In-app purchases:** none


### NutrientOS

[App page](https://appshunter.io/ios/app/nutrientos-calorie-tracker/id6765582312)

Track your nutrition, understand your meals, and build healthier habits with food logging, macro and micronutrient tracking, and workout logging. Optional AI tools offer advanced guidance and insights for personalized wellness.

**Highlights:** Food diary with calories, macros, and micronutrients, Barcode and food search, Restaurant menu browsing, Fitness, hydration, and sleep tracking, AI meal scan, AI Coach for guidance, AI recipe builder

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atlas Pro Monthly | $7.99 | per month |
| Atlas Premium Monthly | $12.99 | per month |


## Frequently asked questions

### Is Pump Fit free?

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

### Is NutrientOS free?

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

### Which has better reviews, Pump Fit or NutrientOS?

Pump Fit and NutrientOS are both rated 5.0 out of 5 on the App Store, from 13 and 1 ratings respectively.

### Do Pump Fit or NutrientOS have ads?

Neither Pump Fit nor NutrientOS shows ads.

### Which is updated more often, Pump Fit or NutrientOS?

Pump Fit ships an update every 5 days, and NutrientOS fortnightly. Most recently, Pump Fit was updated on September 13, 2026 and NutrientOS on September 19, 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.*