# IronLog vs NutrientOS

The clearest difference is update cadence: IronLog at every 5 days against NutrientOS's fortnightly. NutrientOS's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. IronLog sells 6 one-off in-app purchases and NutrientOS sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

IronLog ships an update every 5 days, NutrientOS fortnightly. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | IronLog | NutrientOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nutrientos-calorie-tracker/id6765582312/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 22 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Yana Mishenina](https://appshunter.io/developer/1891140605) | [Jeremiyah Escobedo](https://appshunter.io/developer/1895999641) |

## What reviewers say

### IronLog

[App page](https://appshunter.io/ios/app/ironlog-workout-planner/id6761731973)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Nice Tip | $1.99 | one-time |
| Kind Tip | $2.99 | one-time |
| Big Tip | $4.99 | one-time |
| Huge Tip | $9.99 | one-time |
| Mega Tip | $19.99 | one-time |


### 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 IronLog free?

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

### Is NutrientOS free?

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

### Do IronLog or NutrientOS have ads?

Neither IronLog nor NutrientOS shows ads.

### Which is updated more often, IronLog or NutrientOS?

IronLog ships an update every 5 days, and NutrientOS fortnightly. Most recently, IronLog was updated on September 9, 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.*