# 5Counter vs WhaleSpy

The clearest difference is in-app purchases: WhaleSpy at none against 5Counter's 2. WhaleSpy also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 5Counter sells 2 one-off in-app purchases. WhaleSpy asks for nothing beyond the download.

5Counter ships an update every 5 days, WhaleSpy every 2 days. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 5Counter | WhaleSpy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 5 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RYOYA GOJO](https://appshunter.io/developer/1868880653) | [Soon Chan Hwang](https://appshunter.io/developer/1874249132) |

## What reviewers say

### 5Counter

[App page](https://appshunter.io/ios/app/5counter-binomial-probs/id6757778131)

Easily record counts with large buttons and view real-time occurrence rates and probabilities. It also calculates binomial distribution probabilities based on actual occurrences and expected rates, helping you make data-driven decisions.

**Highlights:** Large, easy-to-use buttons for counting, Real-time occurrence rate calculation, Automatic probability updates, Binomial distribution probability calculations, View probability based on actual occurrences

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Preset Expansion | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |


### WhaleSpy

[App page](https://appshunter.io/ios/app/whalespy/id6758661753)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 5Counter free?

5Counter is free to download, with in-app purchases available.

### Is WhaleSpy free?

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

### Do 5Counter or WhaleSpy have ads?

5Counter shows ads; WhaleSpy does not.

### Which is updated more often, 5Counter or WhaleSpy?

5Counter ships an update every 5 days, and WhaleSpy every 2 days. Most recently, 5Counter was updated on October 25, 2026 and WhaleSpy on October 18, 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.*