# VectorShield vs AI Calorie Tracker by Oneleaf

The clearest difference is rating: VectorShield at 5.0 against AI Calorie Tracker by Oneleaf's 4.4. VectorShield also leads on in-app purchases (none vs 2). AI Calorie Tracker by Oneleaf's advantage is update cadence (every 5 days vs fortnightly). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. AI Calorie Tracker by Oneleaf sells 2 in-app purchases, starting at $9.99 per month. VectorShield asks for nothing beyond the download.

VectorShield holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

VectorShield ships an update fortnightly, AI Calorie Tracker by Oneleaf every 5 days. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | VectorShield | AI Calorie Tracker by Oneleaf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/vectorshield/id6759514220/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/ai-calorie-tracker-by-oneleaf/id6761541989/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 67 MB | 84 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Sam Hutcherson](https://appshunter.io/developer/1840285323) | [Oneleaf](https://appshunter.io/developer/1640028542) |

## What reviewers say

### VectorShield

[App page](https://appshunter.io/ios/app/vectorshield/id6759514220)

This app helps individuals with Alpha-Gal Syndrome manage their condition by providing a database of medication and restaurant safety. It allows users to log meals, track vitals, and connect with a community of fellow patients.

**Highlights:** Medication safety database, Restaurant and menu item safety ratings, Meal logging (voice, text, photo, barcode), Apple Watch vitals tracking, Community forum for patients, Personalized sensitivity calibration

**Features:** Apple Watch app

**In-app purchases:** none


### AI Calorie Tracker by Oneleaf

[App page](https://appshunter.io/ios/app/ai-calorie-tracker-by-oneleaf/id6761541989)

Easily track your calorie and macronutrient intake by simply snapping a photo of your meal. Get instant nutritional estimates and set personalized weight loss goals. Log meals in seconds and monitor your progress with visual tools.

**Highlights:** AI food scanning for instant nutrition estimates, Calorie, macro, and micronutrient tracking, Personalized weight loss goal setting, Quick meal logging via photo or search, Weight progress tracking and trend visualization, Daily calorie budget and macro rings

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $9.99 | per month |
| Premium Yearly | $34.99 | per year |


## Frequently asked questions

### Is VectorShield free?

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

### Is AI Calorie Tracker by Oneleaf free?

AI Calorie Tracker by Oneleaf is free to download, with in-app purchases available.

### Which has better reviews, VectorShield or AI Calorie Tracker by Oneleaf?

VectorShield is rated higher. VectorShield averages 5.0 out of 5 from 2 ratings, while AI Calorie Tracker by Oneleaf averages 4.4 from 5 ratings.

### Do VectorShield or AI Calorie Tracker by Oneleaf have ads?

Neither VectorShield nor AI Calorie Tracker by Oneleaf shows ads.

### Which is updated more often, VectorShield or AI Calorie Tracker by Oneleaf?

VectorShield ships an update fortnightly, and AI Calorie Tracker by Oneleaf every 5 days. Most recently, VectorShield was updated on October 20, 2026 and AI Calorie Tracker by Oneleaf on October 7, 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.*