# Calorithm vs Calorie Ledger Book

The clearest difference is ads: Calorie Ledger Book at none against Calorithm's shown. Calorithm's advantage is update cadence (every 3 days vs every 9 days) and device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Calorithm sells 1 one-off in-app purchase and Calorie Ledger Book sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Calorithm ships an update every 3 days, Calorie Ledger Book every 9 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Calorithm | Calorie Ledger Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 9 days |
| Size | 60 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shunsuke Maeda](https://appshunter.io/developer/1815285078) | [Atsushi Takahashi](https://appshunter.io/developer/6806662954) |

## What reviewers say

### Calorithm

[App page](https://appshunter.io/ios/app/calorithm/id6746127712)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Points | $0.99 | one-time |


### Calorie Ledger Book

[App page](https://appshunter.io/ios/app/calorie-ledger-book/id6806662952)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $3.99 | per month |
| Premium (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is Calorithm free?

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

### Is Calorie Ledger Book free?

Calorie Ledger Book is free to download, with in-app purchases available.

### Do Calorithm or Calorie Ledger Book have ads?

Calorithm shows ads; Calorie Ledger Book does not.

### Which is updated more often, Calorithm or Calorie Ledger Book?

Calorithm ships an update every 3 days, and Calorie Ledger Book every 9 days. Most recently, Calorithm was updated on October 28, 2026 and Calorie Ledger Book on October 29, 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.*