# When oh When vs Zenniz

The clearest difference is review sentiment: When oh When at 100% against Zenniz's 50%. When oh When also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 4). Zenniz's advantage is price (Free vs $0.99) and update cadence (every 11 days vs every 16 months). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Zenniz is free to download; When oh When costs $0.99 up front. Zenniz sells 4 in-app purchases, starting at $3.99 per month. When oh When asks for nothing beyond the download.

When oh When holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 5 and 5 respectively. Written reviews point the same way: 100% of When oh When's written reviews are positive against 50% of Zenniz's.

When oh When ships an update every 16 months, Zenniz every 11 days. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | When oh When | Zenniz |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/when-oh-when/id991556114/reviews)** | [4.4 (5 ratings)](https://appshunter.io/ios/app/zenniz/id1643513477/reviews) |
| Number of ratings | 5 | 5 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 11 days** |
| Monetization | Paid | **Freemium** |
| Size | 9 MB | 150 MB |
| Requires iOS | **14.1** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Matt Longmire](https://appshunter.io/developer/583944876) | [Zenniz Oy](https://appshunter.io/developer/1255476194) |

## What reviewers say

### When oh When

[App page](https://appshunter.io/ios/app/when-oh-when/id991556114)

Easily log any event or activity you want to track, from walks to specific habits. Analyze the frequency of your logged events over time with simple, intuitive tools. Log directly from your Apple Watch for ultimate convenience.

**Highlights:** Simple event logging, Customizable categories, Frequency analysis, Apple Watch logging, Intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Zenniz

[App page](https://appshunter.io/ios/app/zenniz/id1643513477)

This app connects to an on-court system to record and analyze your sports sessions. Review your statistics, shot placements, and watch edited videos of your gameplay to identify areas for improvement and track progress over time.

**Highlights:** Login to on-court devices, Store session data and videos, View session statistics, 3D shot placement map, Edited session videos, Track progress over time, Playstyle IQ badges, AI-powered performance rating

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zenniz Starter | $3.99 | per month |
| Zenniz Premium | $13.90 | per month |
| Zenniz Starter | $39.99 | per year |
| Zenniz Premium | $130.99 | per year |


## Frequently asked questions

### Is When oh When free?

When oh When costs $0.99, with no in-app purchases.

### Is Zenniz free?

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

### Which has better reviews, When oh When or Zenniz?

When oh When is rated higher. When oh When averages 5.0 out of 5 from 5 ratings, while Zenniz averages 4.4 from 5 ratings.

### Do When oh When or Zenniz have ads?

Neither When oh When nor Zenniz shows ads.

### Which is updated more often, When oh When or Zenniz?

When oh When ships an update every 16 months, and Zenniz every 11 days. Most recently, When oh When was updated on October 19, 2026 and Zenniz on October 25, 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.*