Keel vs Tairoku
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Keel
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Log your weight in seconds. See the trend over time. Keel makes a daily weigh-in simple: one number, a clear chart and a seven-day average that helps you see beyond everyday fluctuations. - Log in kilograms or pounds. - See your recent weights and seven-day average. - Set an optional target and a daily reminder that fits your routine. - Edit a weight or undo a change. - Connect Apple Health, free and entirely optional. Share the weights you log from then on, or bring in existing weights with a one-time import. Keel keeps days you have already logged and imports one reading per missing day. No account. No advertising. No analytics. Keel stores your weights on your device. Your weights are never sent to Mono Studio or our servers. If you choose to connect Apple Health, Keel can save weights to Health and import the weights you allow it to read. Apple Health may sync through Apple's services according to your device settings. You control access, and Keel never edits Health entries created by another app.
Tairoku
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A weight log only helps if you keep it. Tairoku is a weight-only tracker built so that today's entry is done by nudging yesterday's number โ nothing to type. โ Two taps, starting from last time The record sheet opens with your previous weight already in place. Move it with โ0.1 / +0.1 for whatever changed, and save. โ Weight makes sense as a line, not a number Day-to-day readings swing with food and water. View 7 days, 30 days, 90 days, or a year as a line chart with a 7-day moving average on top, so one morning's number doesn't decide how you feel. โ How far is the goal Set a goal weight and a progress ring shows how much of the distance you have covered since you started. Reaching it gets a short celebration. โ Days kept, and the basics See your recording streak, the change in your weekly average, and the lowest and highest weight for the period. Add your height and BMI appears alongside them. Body fat percentage is optional. โ Check it and log it from the Home Screen Home Screen and Lock Screen widgets show your latest weight, the change since last time, a 7-day trend, and goal progress. Tap one to open the record sheet. A daily reminder is there too โ and it works fine left off. โ Apple Health, CSV export, and history calendar Apple Health sync lets you turn reading and writing on or off separately; both are off by default. Browse past entries on a monthly calendar, and export your records as a CSV file. Units: kg and lb. Works in Dark Mode and on iPad. โ Records stay on your device No account and no sign-in. Weight, body fat, and notes are stored only on the device and are not sent anywhere. The network is used to show ads and to send anonymous usage and crash data that help improve the app. We do not collect information that identifies you personally.
Screenshots
Verdict
The clearest difference is ads: Keel at none against Tairoku's shown. Keel also leads on iOS requirement (15.1 vs 17.0). Tairoku's advantage is update cadence (every 4 weeks vs every 5 months). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Keel ships an update every 5 months, Tairoku every 4 weeks. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | Keel | Tairoku |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 4 weeks โ better |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 29 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | ALASDAIR CUNNINGHAM | Daisuke Minami |
In-app purchases
Keel
No in-app purchases
Tairoku
No in-app purchases









