# EaterIQ vs Rhythm LightScore

The clearest difference is in-app purchases: Rhythm LightScore at none against EaterIQ's 2. Rhythm LightScore also leads on update cadence (every 4 days vs every 4 weeks). EaterIQ's advantage is iOS requirement (15.6 vs 18.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. EaterIQ sells 2 in-app purchases, starting at $2.99 per month. Rhythm LightScore asks for nothing beyond the download.

EaterIQ ships an update every 4 weeks, Rhythm LightScore every 4 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | EaterIQ | Rhythm LightScore |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/rhythm-lightscore/id6799837500/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Monetization | Freemium | **Free** |
| Size | 42 MB | 26 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Ridham Avaiya](https://appshunter.io/developer/1864814753) | [Rhythm Innovations, Inc.](https://appshunter.io/developer/6799837502) |

## What reviewers say

### EaterIQ

[App page](https://appshunter.io/ios/app/eateriq/id6757137222)

Instantly understand your food with this intelligent assistant. Scan products, decode nutrition labels, and make healthier choices by transforming complex food information into clear, actionable insights for grocery shopping and daily tracking.

**Highlights:** Scan food products instantly, Decode nutrition labels, Make healthier choices, Understand hidden ingredients, Actionable food insights

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EaterIQ Pro Monthly | $2.99 | per month |
| Pro Yearly | $14.99 | per year |


### Rhythm LightScore

[App page](https://appshunter.io/ios/app/rhythm-lightscore/id6799837500)

This app provides a daily "LightScore" based on your exposure to daylight, its consistency, and your pre-bedtime phone use. It offers insights into your light habits and suggests improvements for better well-being.

**Highlights:** Daily LightScore out of 100, Measures Light Time, Consistency, and Dark Time, Integrates with Apple Watch Health data, Uses phone camera as a light meter, Visualizes daily progress with Sol character, Sunset photo capture and sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is EaterIQ free?

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

### Is Rhythm LightScore free?

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

### Do EaterIQ or Rhythm LightScore have ads?

Neither EaterIQ nor Rhythm LightScore shows ads.

### Which is updated more often, EaterIQ or Rhythm LightScore?

EaterIQ ships an update every 4 weeks, and Rhythm LightScore every 4 days. Most recently, EaterIQ was updated on October 28, 2026 and Rhythm LightScore on October 25, 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.*