Comparison

Regularity vs Karu

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

Head to head
About

Regularity

Effortlessly track digestive health and bowel movements on iPhone and Apple Watch. Log urgency, pain, and consistency with optional notes and markers for diet or medication changes. Generate reports and export data to understand patterns and share with your doctor.

Highlights
  • Private bowel movement logging
  • Track urgency, pain, amount, leakage, blood
  • Bristol Stool Scale consistency
  • Log medication and diet changes
  • View frequency and consistency trends
  • Export data to PDF and Apple Health
  • One-time purchase for full features
Features
Read full description

Track your digestive health privately and effortlessly. Log bowel movements in seconds from your iPhone or Apple Watch — built for people managing IBS, IBD, Crohn's, colitis, or anyone who wants a clear record to understand their patterns and share with their doctor. No subscription, ever. Regularity is a one-time purchase. FAST, PRIVATE LOGGING One tap to record an event. Add detail only when it's useful: • Urgency level • Pain level • Amount (small, average, large) • Leakage • Blood presence • Bristol Stool Scale consistency (Type 1–7) • Free-text notes MARK WHAT CHANGES Log a medication start, diet change, or procedure as a marker on your timeline. It appears as a line across your charts, so you can see how your patterns shifted before and review with your doctor. REPORTS & EXPORT • View your daily activity at a glance — frequency, consistency, urgency, pain, amount, blood, and leakage trends. • Export today's summary as a PDF or send your events to Apple Health. REGULARITY FULL — One-Time Purchase Unlock everything with a single payment. No subscription, ever: • Choose any earlier day (the free plan covers today) • Weekly, monthly, 6-month, and yearly reports • "Since marker" before-and-after comparisons across every metric • Markers on long-range charts and in exported PDF reports • Full-range PDF reports • Reminders 100% PRIVATE • No accounts, no sign-in • No analytics, ads, or telemetry • HealthKit is opt-in and export-only — your data never leaves your device unless you choose to share it Requires iPhone with iOS 18 or later. Apple Watch with watchOS 10.5 or later recommended for watch capture.

About

Karu

This app uses a minimalist timer to help you focus. As you complete focus sessions, virtual grass grows, and you can then 'cut' it. Unlock additional features to grow trees and flowers.

Highlights
  • Minimalist focus timer
  • Virtual grass growth
  • Grass cutting mechanic
  • Mow mode for free cutting
  • Unlockable garden elements (trees, flowers)
Features
Read full description

A minimalist focus timer. Set timer, and wait for the grass to grow. Then enjoy the cut. Bonus - Mow mode. Cut as you please and earn "zen" points. Bonus unlock: Grow trees and flowers. $1.99 Terms: https://sites.google.com/view/talk-or-not/home

Screenshots

Regularity4 screens
Karu4 screens

Verdict

The call

The clearest difference is iOS requirement: Regularity at 18.0 against Karu's 26.5. On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Regularity sells 2 one-off in-app purchases and Karu sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Regularity against 5.0 for Karu. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard1 real difference · 8 level
Regularity versus Karu: the parameters behind the verdict, then further details
ParameterRegularityKaru
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS18.0 — better26.5
Further details — not scored
Size9 MB1 MB
Age rating4+4+
DeveloperCreative Stack, LLCTalk or Not, Inc.

Customer experience

Regularity

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Karu

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Regularity

One-time2
  • 14-Day Free TrialFree
  • Regularity Full Access$9.99
1 purchases

Karu

One-time1
  • Lifetime Premium$2.99

Questions

Is Regularity free?
Regularity is free to download, with in-app purchases available.
Is Karu free?
Karu is free to download, with in-app purchases available.
Which has better reviews, Regularity or Karu?
Regularity and Karu are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Regularity or Karu have ads?
Neither Regularity nor Karu shows ads.

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