# Carnivore diet manager vs Letti

The clearest difference is rating: Letti at 5.0 against Carnivore diet manager's 4.7. Letti also leads on update cadence (every 2 weeks vs every 6 weeks). Carnivore diet manager's advantage is ratings volume (13 vs 1) and iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Carnivore diet manager sells 4 in-app purchases, starting at $5.99 per month and Letti sells 3 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Letti holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Carnivore diet manager has 13 ratings behind it against 1, so its average is the more settled of the two.

Carnivore diet manager ships an update every 6 weeks, Letti every 2 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Carnivore diet manager | Letti |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (13 ratings)](https://appshunter.io/ios/app/carnivore-diet-manager/id6743125582/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/letti/id6745814931/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 78 MB | 23 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Zinaida Davydova](https://appshunter.io/developer/1622534112) | [Bogdan Oleinik](https://appshunter.io/developer/1788646317) |

## What reviewers say

### Carnivore diet manager

[App page](https://appshunter.io/ios/app/carnivore-diet-manager/id6743125582)

This app helps you manage a carnivore diet by tracking meals, providing recipes, and scheduling fasting periods. It also monitors water intake and activity, syncing data with health platforms.

**Highlights:** Food search with carnivore rating, Daily meal logging, Meal plans and recipes, Water intake tracking, Activity logging, Fasting scheduler, Apple Health and Fitbit sync

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO user for 1 month | $5.99 | per month |
| PRO user for 3 months | $11.99 | per 3 months |
| PRO user for 1 year | $29.99 | per year |
| PRO user forever | $59.99 | one-time |


### Letti

[App page](https://appshunter.io/ios/app/letti/id6745814931)

Scan product barcodes to get detailed nutritional information, identify harmful substances, and check for allergens. It also highlights dietary labels like halal and vegetarian, and calculates the glycemic index.

**Highlights:** Barcode scanning for instant analysis, Detailed nutritional breakdown (calories, macros, vitamins, minerals), Identification of harmful additives and preservatives, Allergen detection (gluten, dairy, nuts, etc.), Dietary label identification (halal, kosher, vegan), Glycemic index calculation

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly - light | $9.99 | per year |
| Yearly - silver | $14.99 | per year |
| Yearly - gold | $19.99 | per year |


## Frequently asked questions

### Is Carnivore diet manager free?

Carnivore diet manager is free to download, with in-app purchases available.

### Is Letti free?

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

### Which has better reviews, Carnivore diet manager or Letti?

Letti is rated higher. Carnivore diet manager averages 4.7 out of 5 from 13 ratings, while Letti averages 5.0 from 1 ratings.

### Do Carnivore diet manager or Letti have ads?

Neither Carnivore diet manager nor Letti shows ads.

### Which is updated more often, Carnivore diet manager or Letti?

Carnivore diet manager ships an update every 6 weeks, and Letti every 2 weeks. Most recently, Carnivore diet manager was updated on November 4, 2026 and Letti on November 5, 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.*