# Crynostics vs Fladder

The clearest difference is in-app purchases: Crynostics at none against Fladder's 2. Fladder's advantage is update cadence (every 6 days vs monthly) and iOS requirement (15.1 vs 17.5). On price, ads and device support there is nothing between them.

Both are free to download. Fladder sells 2 in-app purchases, starting at $3.99 per month. Crynostics asks for nothing beyond the download.

Crynostics ships an update monthly, Fladder every 6 days. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Crynostics | Fladder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Size | 5 MB | 236 MB |
| Requires iOS | 17.5 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CRYNOSTICS INC.](https://appshunter.io/developer/1724305628) | [Remi Hindriks](https://appshunter.io/developer/1530413443) |

## What reviewers say

### Crynostics

[App page](https://appshunter.io/ios/app/crynostics/id6736761241)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fladder

[App page](https://appshunter.io/ios/app/fladder-birding-and-bird-id/id6747474454)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | per month |
| Premium | $24.99 | per year |


## Frequently asked questions

### Is Crynostics free?

Crynostics is free to download, with no in-app purchases.

### Is Fladder free?

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

### Do Crynostics or Fladder have ads?

Neither Crynostics nor Fladder shows ads.

### Which is updated more often, Crynostics or Fladder?

Crynostics ships an update monthly, and Fladder every 6 days. Most recently, Crynostics was updated on October 5, 2026 and Fladder on October 24, 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.*