Comparison

KATACHI Workout & Body Tracker vs Interval Routine Timer

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

KATACHI Workout & Body Tracker

Features
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Numbers and photos, together. KATACHI brings your lifts, body weight and progress photos into one calm, private place, so you can look back on how you’ve changed. LOG IN SECONDS Pick an exercise, enter weight and reps. Or type a line like β€œBench Press 135lb 5 reps 3 sets” and it’s read for you. A gentle target from last time is suggested. Running is logged too, by distance or by speed, time and incline. TRACK YOUR BODY Weight and body fat trends, goal weight, and optional import from Apple Health. PROGRESS PHOTOS Take front, side and back photos with a self-timer camera, with your last photo faintly overlaid so every shot lines up. Compare before and after, and export a timelapse. Faces can be pixelated automatically when you share. MONTHLY LOG A one-card recap of your month β€” training days, volume, weight change β€” made to share or keep. TOOLS Plate calculator, rest timer with Live Activity, estimated 1RM, weekly volume by body part. UNITS THAT FIT kg or lb, cm or ft/in, km or miles, ml or fl oz β€” your choice. PRIVATE BY DESIGN Your records and photos stay on your device. No ads, no tracking. Optional Face ID lock and iCloud backup with Pro. FREE, AND PRO WHEN YOU WANT MORE Free to use with the last 10 days visible. KATACHI Pro keeps your full history, with Apple Health import, iCloud backup and shareable Monthly Log cards. Choose a monthly or yearly subscription, or a one-time purchase: pay once, no renewal. KATACHI is a logging tool and does not provide medical advice. ABOUT KATACHI PRO β€’ Monthly and yearly plans are auto-renewing subscriptions. β€’ Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically for the same period unless auto-renew is turned off at least 24 hours before the end of the current period. β€’ Manage or cancel any time in Settings > Apple Account > Subscriptions. β€’ The one-time purchase is paid once and does not renew. Terms of Use (EULA): https://pohoda.jp/en/legal/terms.html Privacy Policy: https://pohoda.jp/en/legal/privacy.html

About

Interval Routine Timer

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A training timer that simply plays a sequence of work and rest. It is a routine player, not a logging app: press play and move to the chimes. BUILD A ROUTINE - Line up "how many seconds" and "what that time is for" and save it as a routine - Name each interval anything you like: "Bench Press", "Rest", "Stretch". Whatever you write becomes its label - Set each length as either Time or Reps. Time is chosen with minute and second wheels - For exercises you count, such as squats and push-ups, a Reps interval waits until you finish. Write how many in the name ("Squats 20") - Duplicate, reorder and delete routines, so a "Chest Day" and a "Back Day" with the same rests are quick to make PLAY, THEN FOLLOW ALONG - Once you start, each timed interval moves on to the next by itself - A Reps interval moves on when you tap inside the ring after you finish - A ring shows the time left, and you can see what comes next - Pause, skip and stop are supported. In a timed interval, you can also tap inside the ring to pause and resume CHIMES FOR EVERY CHANGE - Chimes start a little before each change and finish exactly on it, so you know it is ending before it does - Choose a countdown (a beep each second, then a long high tone) or a steady beep - Set how long the chime lasts - They sound even when the silent switch is on and the screen is locked SCREEN OFF, PHONE IN YOUR POCKET - While the phone is locked, chimes sound at the same moment as when the app is open - The current interval and time left appear on the Lock Screen and Dynamic Island, and advance with each change (Live Activities) - Each change also arrives as a notification, and shows on your wrist if you wear an Apple Watch (notification permission required) A CALENDAR OF THE DAYS YOU TRAINED - Days you play a routine to the end are marked automatically. Add days by hand for sessions you ended early or did without the app - Only the date and routine name are stored. Reps, weights and calories are not tracked SYNC WITH ICLOUD - Routines, the days you trained, and the ring color stay in step across iPhones and iPads signed in with the same Apple Account - The app works without iCloud, too. Syncing happens only between devices signed in to iCloud - Chime settings (style and length) stay on each device AND MORE - Choose the ring color; the app icon changes to match - Dark Mode - Japanese and English (follows your device language) - iPhone and iPad - No sign-up, no ads. Your data is stored on your device and in your own iCloud, where neither the developer nor third parties can see it ABOUT CALORIES This app does not show calories burned. To record calories and heart rate, use it together with the Workout app on your Apple Watch.

Screenshots

KATACHI Workout & Body Tracker4 screens
Interval Routine Timer4 screens

Verdict

The call

The clearest difference is update cadence: Interval Routine Timer at daily against KATACHI Workout & Body Tracker's every 3 days. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

KATACHI Workout & Body Tracker ships an update every 3 days, Interval Routine Timer daily. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

Scorecard1 real difference Β· 5 level
KATACHI Workout & Body Tracker versus Interval Routine Timer: the parameters behind the verdict, then further details
ParameterKATACHI Workout & Body TrackerInterval Routine Timer
PriceFreeFree
Update frequencyEvery 3 daysDaily β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad β€” better
Requires iOS18.018.0
Further details β€” not scored
Size11 MB52 MB
Age rating4+4+
DeveloperKeisuke Sugimotojunto yanai

In-app purchases

None

KATACHI Workout & Body Tracker

No in-app purchases

None

Interval Routine Timer

No in-app purchases

Questions

Is KATACHI Workout & Body Tracker free?
KATACHI Workout & Body Tracker is free to download, with no in-app purchases.
Is Interval Routine Timer free?
Interval Routine Timer is free to download, with no in-app purchases.
Do KATACHI Workout & Body Tracker or Interval Routine Timer have ads?
Neither KATACHI Workout & Body Tracker nor Interval Routine Timer shows ads.
Which is updated more often, KATACHI Workout & Body Tracker or Interval Routine Timer?
KATACHI Workout & Body Tracker ships an update every 3 days, and Interval Routine Timer daily. Most recently, KATACHI Workout & Body Tracker was updated on October 10, 2026 and Interval Routine Timer on October 9, 2026.

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