# Aja vs PhysioTwin

The clearest difference is in-app purchases: PhysioTwin at none against Aja's 2. PhysioTwin also leads on update cadence (every 3 days vs every 5 weeks). Aja's advantage is ratings volume (26 vs 1) and iOS requirement (15.1 vs 17.0). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Aja sells 2 in-app purchases, starting at $9.99 per month. PhysioTwin asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Aja against 5.0 for PhysioTwin. That said, the two scores are not equally well evidenced: Aja has 26 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.

Aja ships an update every 5 weeks, PhysioTwin every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Aja | PhysioTwin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (26 ratings)](https://appshunter.io/ios/app/aja-nutrition-tracker/id6740185993/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/physiotwin/id6759465593/reviews) |
| Number of ratings | **26** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Freemium | **Free** |
| Size | 51 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Aja Nutrition LLC](https://appshunter.io/developer/1788811570) | [Camille Tran](https://appshunter.io/developer/1878763134) |

## What reviewers say

### Aja

[App page](https://appshunter.io/ios/app/aja-nutrition-tracker/id6740185993)

This gamified nutrition tracker helps you log meals, hit macro goals, and build healthy habits. Earn rewards by completing quests and watch your virtual garden grow as you make progress. Features AI-powered meal scanning and science-backed nutritional adjustments.

**Highlights:** Gamified nutrition tracking, AI meal scanning, Customizable macro targets, Virtual garden rewards, Barcode and label scanning, Dynamic calorie adjustments

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aja Club | $9.99 | per month |
| Aja Club | $49.99 | per year |


### PhysioTwin

[App page](https://appshunter.io/ios/app/physiotwin/id6759465593)

This app creates a real-time digital twin of your body to monitor stress and track your energy levels using Apple Watch data. It offers personalized wellness insights and guided activities to aid recovery.

**Highlights:** Real-time stress detection, Body battery tracking, Apple Watch integration, Personalized wellness insights, Guided recovery activities, ML activity classification

**In-app purchases:** none


## Frequently asked questions

### Is Aja free?

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

### Is PhysioTwin free?

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

### Which has better reviews, Aja or PhysioTwin?

Aja and PhysioTwin are both rated 5.0 out of 5 on the App Store, from 26 and 1 ratings respectively.

### Do Aja or PhysioTwin have ads?

Neither Aja nor PhysioTwin shows ads.

### Which is updated more often, Aja or PhysioTwin?

Aja ships an update every 5 weeks, and PhysioTwin every 3 days. Most recently, Aja was updated on October 24, 2026 and PhysioTwin 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.*