ZanZan vs Kizami 刻み
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZanZan
Read full descriptionHide full description
Turn effort into rewards. ZanZan is a to-do list and habit tracker with rewards you choose. Plan your day, log reading or exercise, and earn Effort Coins using rules you set. Save up for a movie night, a coffee you love, or time for a game. Connect what you want to do with something to look forward to. You choose the activities, the coin rules, and the rewards. For example, you could earn 1 Effort Coin for reading a chapter and redeem a movie night for 20 coins. You decide what to do, how many coins to earn, and what to reward yourself with. TO-DO LIST & RECURRING TASKS Create one-time or recurring tasks for work, study, and daily life. Assign coin rewards to your tasks and earn them when you meet the rules you've set. HABIT TRACKING & ACTIVITY LOGS Log reading time, running distance, or other everyday activities. Create your own repeatable activities, add numbers, notes, and photos, and choose how each activity earns coins. CHOOSE YOUR OWN REWARDS Add a reward you'd enjoy, set its coin cost and requirements, and work toward it at your own pace. Redeem it when you have enough coins and meet the requirements, then look back through your reward history. EFFORT COINS & PROGRESS STATS Create different coin types for areas such as study, exercise, or daily life. See your balances, check where each coin came from, and follow your progress over time. FOCUS TIMER, WIDGETS & ICLOUD SYNC Start a focus timer when it's time to begin. Keep tasks and progress close with widgets. Store your data on your device, with optional iCloud sync. Start with one small task. Save up for something you want to reward yourself with. Effort Coins are for personal motivation within the app. They are not real money and cannot be exchanged for cash. You choose and arrange your own rewards; ZanZan does not provide or deliver prizes. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Kizami 刻み
Read full descriptionHide full description
Kizami records whether you did it, at the time you set. What you kept and what you didn't are kept with the same weight. Neither can be deleted or rewritten afterwards. The app writes the misses, not you In most habit trackers, a day you missed is an empty square. An empty square can be filled in tomorrow. Kizami writes a line into the ledger — "missed" — once the deadline passes. Entries are accepted only from 30 minutes before the time until the deadline; after that, nothing can be added. Forgetting does not quietly become nothing at all. The stake is a record, not money There are services that charge you when you fail. They appear to work, but they need a card on file, a monthly payment, and trust in a third party. Kizami puts the same irreversibility in a ledger on your own device. Nothing is sent anywhere, and no one collects from you. It simply stays written. You can explain. You cannot rewrite. You can add a reason to a slot you dropped — forgot, no time, unwell, not up to it, other. But it is added as a separate line; the original line does not move. There is room to say your piece. There is none to change what happened. It cannot be erased. That is the design. Saying this first: the ledger has no delete and no edit, and the screens carry no path to one. If you record something by mistake, you add a note rather than remove the line. The ways around it are closed too. - Nothing can be backdated (30 minutes before, until the deadline) - Stopping a commitment does not remove its past entries - Lowering a goal does not change a past "18 / 30" — it stays partial - A pause can only be set for today or a future date - Entries made while the device clock looks rolled back are marked Recording itself stays free Today's screen, the ledger and the notifications all work without paying, and every single entry in the ledger is readable. One payment (no subscription) opens three things: - As many commitments as you want (free: up to 3) - Stats and monthly reports over the full history (free: last 30 days) - Recording from Apple Watch There is a 7-day trial. It starts when you tap to start it, so it does not run down while you are only looking. Also - Three ways to count: repetitions (30 reps), time (15 min), or simply done / not done - Not all-or-nothing: 18 out of 30 is kept as partial - On the 1st of each month, the previous month is sealed as a report. That does not change either - 日本語 / English / 简体中文 / 繁體中文 What it does not do - Notifications are local iOS notifications. Delivery is up to iOS, so they cannot be guaranteed. If one does not arrive, the slot past its deadline is still recorded the same way - The timed notification comes from the iPhone. If the iPhone is off, the watch alone will not sound (you can still record from the watch alone) - Data lives on the device. Nothing is sent to a server. There is currently no sync across devices - This is not an app that gives exercise, health or medical advice
Screenshots
Verdict
ZanZan and Kizami 刻み are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ZanZan sells 2 in-app purchases, starting at $0.99 per month and Kizami 刻み sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ZanZan ships an update every 3 days, Kizami 刻み every 2 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.
| Parameter | ZanZan | Kizami 刻み |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 18.2 | 17.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | 昊岩 鲁 | GYOU GI |
In-app purchases
ZanZan
- Steps Monthly Membership$0.991 Month
- Steps Lifetime Access$6.99
Kizami 刻み
- Kizami, one payment$12.99









