# Lean AI vs SCALA

The clearest difference is review sentiment: Lean AI at 75% against SCALA's 0%. Lean AI also leads on rating (4.6 vs 3.0) and ratings volume (84 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Lean AI sells 14 in-app purchases, starting at $0.99 per 7 days and SCALA sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Lean AI holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Lean AI has 84 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 75% of Lean AI's written reviews are positive against 0% of SCALA's.

Lean AI ships an update every 3 days, SCALA every 2 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Lean AI | SCALA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (84 ratings)](https://appshunter.io/ios/app/lean-ai-calorie-tracker/id6737275965/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/scala-macro-tracker/id6745275059/reviews) |
| Number of ratings | **84** | 1 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 69 MB | 135 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AI Star LLC](https://appshunter.io/developer/1775701825) | [Flow Labs Oy](https://appshunter.io/developer/1806635537) |

## What reviewers say

### Lean AI

[App page](https://appshunter.io/ios/app/lean-ai-calorie-tracker/id6737275965)

Effortlessly track your nutrition and fitness with AI-powered meal analysis. Snap photos of your food or describe your meals for instant calorie and macro breakdowns. Log workouts to monitor your progress and simplify your health journey.

**Highlights:** Snap photos to track macros, Scan barcodes for nutrition info, Describe meals for AI analysis, Log weightlifting and cardio workouts, AI-powered nutrition estimation, Featured on TikTok

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access for 1 Week | $0.99 | per 7 days |
| All Access for 1 Week | $5.99 | per 7 days |
| All Access for 1 Week | $7.99 | per 7 days |
| All access | $7.99 | per 7 days |
| All access | $7.99 | per 7 days |
| All Access for 1 Month | $9.99 | per month |
| All access for 1 Month | $14.99 | per month |
| All access for 1 Year | $19.99 | per year |
| All Access for 1 Year | $29.99 | per year |
| All Access for 1 Year | $29.99 | per year |
| All Access for 1 Year | $29.99 | per year |
| All Access for 1 Year | $39.99 | per year |
| All Access for 1 Year | $49.99 | per year |
| All Access for 1 Year | $49.99 | per year |


### SCALA

[App page](https://appshunter.io/ios/app/scala-macro-tracker/id6745275059)

Discover how your body uniquely reacts to food. Log meals, track your energy levels, and uncover personalized patterns to improve daily focus and stability without needing any sensors.

**Highlights:** Log meals via photo, voice, or text, Track post-meal energy and mood, Identify food-related energy patterns, Receive a daily energy stability score, No external sensors required, Personalized insights into food reactions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SCALA Monthly | $4.99 | per month |
| SCALA Annual Plan | $29.99 | per year |


## Frequently asked questions

### Is Lean AI free?

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

### Is SCALA free?

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

### Which has better reviews, Lean AI or SCALA?

Lean AI is rated higher. Lean AI averages 4.6 out of 5 from 84 ratings, while SCALA averages 3.0 from 1 ratings.

### Do Lean AI or SCALA have ads?

Neither Lean AI nor SCALA shows ads.

### Which is updated more often, Lean AI or SCALA?

Lean AI ships an update every 3 days, and SCALA every 2 weeks. Most recently, Lean AI was updated on October 13, 2026 and SCALA 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.*