# Biorhythm Calculator Simple vs Biladai

The clearest difference is in-app purchases: Biorhythm Calculator Simple at none against Biladai's 2. Biorhythm Calculator Simple also leads on iOS requirement (13.0 vs 16.4). Biladai's advantage is ads (none vs shown) and update cadence (every 5 days vs every 10 months). On price and device support there is nothing between them.

Both are free to download. Biladai sells 2 in-app purchases, starting at $2.99 per month. Biorhythm Calculator Simple asks for nothing beyond the download.

Biorhythm Calculator Simple ships an update every 10 months, Biladai every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Biorhythm Calculator Simple | Biladai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/biladai/id6785263322/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 34 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kouji Yamauchi](https://appshunter.io/developer/1519365107) | [Levi Blumenfeld](https://appshunter.io/developer/6785263324) |

## What reviewers say

### Biorhythm Calculator Simple

[App page](https://appshunter.io/ios/app/biorhythm-calculator-simple/id1542322175)

**Features:** macOS Compatibility

**In-app purchases:** none


### Biladai

[App page](https://appshunter.io/ios/app/biladai/id6785263322)

Discover daily moments of awe and insight into the Creator's intelligence, presented through nature's wonders. Tailor your experience by mood or category, and receive daily reminders to inspire reflection and action.

**Highlights:** Daily posts across six categories, Mood-based content navigation, Browse by category or surprise me, Daily reminder notifications, Personalized user experience, Multiple color themes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biladai Premium | $2.99 | per month |
| Biladai Premium | $24.99 | per year |


## Frequently asked questions

### Is Biorhythm Calculator Simple free?

Biorhythm Calculator Simple is free to download, with no in-app purchases.

### Is Biladai free?

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

### Do Biorhythm Calculator Simple or Biladai have ads?

Biorhythm Calculator Simple shows ads; Biladai does not.

### Which is updated more often, Biorhythm Calculator Simple or Biladai?

Biorhythm Calculator Simple ships an update every 10 months, and Biladai every 5 days. Most recently, Biorhythm Calculator Simple was updated on November 3, 2026 and Biladai 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.*