# Aligner Diary vs Cave Cals

The clearest difference is device support: Aligner Diary at 3 against Cave Cals's 1. Aligner Diary also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Aligner Diary sells 3 in-app purchases, starting at $0.99 per month and Cave Cals sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Aligner Diary | Cave Cals |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cave-cals-ai-calorie-tracker/id6809208501/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | — | Freemium |
| Size | 47 MB | 29 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [思佳 李](https://appshunter.io/developer/1835312196) | [Phil Starkovich](https://appshunter.io/developer/1737048219) |

## What reviewers say

### Aligner Diary

[App page](https://appshunter.io/ios/app/aligner-diary/id6802318433)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Annual | $3.99 | per year |
| Pro Lifetime | $7.99 | one-time |


### Cave Cals

[App page](https://appshunter.io/ios/app/cave-cals-ai-calorie-tracker/id6809208501)

This app simplifies calorie and macro tracking with a prehistoric theme. Log meals quickly via search, barcode scanning, or voice, and monitor your weight progress. Optional AI features offer advanced analysis for a fee.

**Highlights:** Effortless calorie and macro logging, Barcode scanning and food search, Weight tracking and progress visualization, Optional AI-powered meal scanning, Siri and Shortcuts integration, Apple Health synchronization

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cave Cals AI Monthly | $9.99 | per month |
| Cave Cals AI Yearly | $59.99 | per year |


## Frequently asked questions

### Is Aligner Diary free?

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

### Is Cave Cals free?

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

### Do Aligner Diary or Cave Cals have ads?

Neither Aligner Diary nor Cave Cals shows ads.

### Which is updated more often, Aligner Diary or Cave Cals?

Aligner Diary ships an update weekly, and Cave Cals weekly. Most recently, Aligner Diary was updated on October 5, 2026 and Cave Cals on October 6, 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.*