When oh When vs Zenniz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
When oh When
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.
- Simple event logging
- Customizable categories
- Frequency analysis
- Apple Watch logging
- Intuitive interface
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When oh When for iPhone is a a super-simple Event Logging App. Do you ever wonder “How many times did I take a walk in the last month? Well with When oh When you create a category named Walk and every time you Walk you click the button and When oh When logs it. You can then use the Analyzer to analyze the frequency of your Walks. It’s that simple! Log what you want, when you want, even from your Apple Watch.
Zenniz
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.
- 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
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Zenniz player app is a companion to the Zenniz court system. Use Zenniz app to login to the on court device and store your session data and videos to your phone. UNDERSTAND YOUR GAME Take your session data with you off the court. Check your session statistics and see where you could improve. See your shot decisions visualized on the 3-dimensional placement map. Live the on court moments again by watching through the session videos with all the dead time cut off for efficiency. TRACK YOUR PROGRESS Login to the on court system every time using the Zenniz app and see how your statistics and shot placements change overtime and depending on your opponent. Additionally, with a Zenniz Premium subscription (free 1 month trial), get access to even more features such as PLAYSTYLE IQ Playstyle IQ gives you a deeper understanding of your unique style of play. We assign unique badges that reflect your playstyle - some playstyles blend dominant and weak categories, such as high power with low reliability, highlighting a player's bold style. Which badge will you earn? PERFORMANCE RATING Your overall score is powered by Zenniz AI, analyzing every shot from your match. Using advanced data points like stroke speed, spin, placement, and rally dynamics, each shot is rated for effectiveness. SMARTVIEW PLAYER Relive every match moment with intuitive AI video tools. Filter footage to focus on key plays, rallies, or match-defining shots. Whether you're reviewing for fun or fine-tuning your skills, SmartView Player makes it easy to see the game your way. and more analysis tools and more in-depth statiscs. Read terms and conditions here: https://zenniz.com/service-terms
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | When oh When | Zenniz |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 5.0 (5 ratings) — better | 4.4 (5 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 5 | 5 |
| Update frequency | Every 16 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 14.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 9 MB | 150 MB |
| Age rating | 4+ | +4 |
| Developer | Matt Longmire | Zenniz Oy |
Customer experience
When oh When
Zenniz
In-app purchases
When oh When
No in-app purchases
Zenniz
- Zenniz Starter$3.991 Month
- Zenniz Premium1 Month trial$13.901 Month
- Zenniz Starter$39.991 Year
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- Zenniz Premium1 Month trial$130.991 Year
Questions
Is When oh When free?
Is Zenniz free?
Which has better reviews, When oh When or Zenniz?
Do When oh When or Zenniz have ads?
Which is updated more often, When oh When or Zenniz?
Other comparisons
