Comparison

Strengthiness Interval Timer vs Health Kitty

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

Head to head
About

Strengthiness Interval Timer

This interval timer offers a straightforward and efficient way to manage your workouts. It supports multiple named sets, unlimited intervals, and provides audio and vibration cues. Ideal for various interval training protocols, it simplifies setup and tracking.

Highlights
  • Super easy setup
  • Multiple named sets
  • Unlimited intervals
  • Countdown and count-up timers
  • Beep and vibration alerts
  • Stopwatch with lap counter
  • Set counter
Features
Read full description

Strengthiness Interval Timer is the easiest to use interval timer on the App Store. • Super easy setup • Multiple named sets • Unlimited intervals • Count rounds down to 0 or up until you decide to stop • Countdown timer gives you up to 10 seconds to prepare • Beeps and vibrates (on devices that support vibration) • Stopwatch accurate to hundredths of a second • Handy set counter for when you're not doing timed efforts You don't need fancy graphics. What you need is a simple timer that just works. Strengthiness Interval Timer is that timer; a simple app that does what it needs to and is easy to use. Strengthiness Interval Timer is perfect for all sorts of timed High Intensity Interval Training, whether it's the Tabata protocol, a CrossFit WOD, Sprint 8, Viking Warrior Conditioning, or any other type of interval training you may be doing. It comes with four built in examples and you can add as many different set lists as you want. A countdown timer gives you time to setup if you're working out alone. Loud beeps make it easy to use in a group setting, and different beep patterns differentiate the countdown, interval completion, and when the timer is finished. There's no fiddling with awkward time pickers or complicated setup screens, just type in the times you want. Ever forget that 180 seconds is 3 minutes? Stop converting in your head. Just enter the number of seconds you need and Strengthiness Interval Timer will do the math for you. Forgot your GymBoss® Timer? Strengthiness Interval Timer is the perfect stand in. Strengthiness Interval Timer includes a stopwatch function with an unlimited lap counter. Perfect for coaches or training partners working together. Doing sets that aren't timed? It can be easy to forget how many sets you've done while you're recovering, especially if you're counting breaths for breathing sets. Don't worry, the Set Counter has you covered. Just a single tap and Strengthiness Interval Timer will remember for you. Download it today and enjoy the simplicity and utility that is Strengthiness Interval Timer!

About

Health Kitty

Features
Read full description

Your health data is already on your iPhone — HealthKitty helps you make sense of it, just by having a conversation. Ask questions like "How much sleep did I get this week?" or "When was the last time I went for a run?" and get clear, simple answers from the data already stored in Apple Health. No complicated dashboards. No confusing charts. Just a friendly chat. Chat with your health data Ask about your sleep, heart rate, workouts, symptoms and more. HealthKitty uses Apple Intelligence to understand your questions and give you helpful, personalised answers. Ask "When was the last time I went swimming?" or "When did I last brush my teeth?" and you'll get the day and time it actually happened — not just a total. Ask Siri to open it Say "Open Insights in Health Kitty" or "Show my Goals in Health Kitty" and you'll land straight on the tab you wanted. Chat, Insights, Goals and Appointments all work, from Siri, Spotlight or a shortcut of your own. Your day at a glance The Insights tab shows you how today is going without you asking a thing. Your activity rings, the numbers that matter, a trend chart, your medication and how you've been feeling — all in one place. Kitty's read Every period opens with a short, plain-language summary of what stands out. It's written on your iPhone, it uses your actual numbers, and it talks to you like a person — never a diagnosis, never medical advice. Worth noticing HealthKitty surfaces the things a single number can't tell you: a run of days you've met your goal, and how many of your goals are on track. Your week and month, with Health Kitty+ Tap the title at the top of Insights to switch period. Today is there for everyone. This Week and This Month are part of Health Kitty+, and they show you what a single day can't: sleep, resting heart rate and HRV, how every number moved against the week or month before, your weight, body fat and lean mass, your full session log, and your strongest days. Health Kitty+ also lifts the limits on notes, goals and appointments. Better sleep insights HealthKitty detects your sleep accurately, so when you ask about last night or your week, you get a clear, reliable picture of your rest. See your workouts Ask about a run, ride or session and HealthKitty visualises it for you — so you can take in your workout at a glance, not just in words. You'll see how the session was spent zone by zone, and you can ask what your heart rate and power zones actually are. Set and track goals your way Want to hit 8,000 steps a day, sleep 7 hours a night, or reach a distance goal for cycling? Tell HealthKitty your goal and ask how you're tracking. You can choose whether a goal should be met exactly, or stay above or below a target — so your goals work the way you actually think about them. Keep notes from your conversations Found something useful? Save it as a note to revisit later or share with your doctor. Appointments, in the app and your calendar Add your health appointments and ask things like "When is my next check-up?" so you're always prepared. You can add them straight to your calendar, too, so nothing slips through the cracks. Symptom awareness Knowing about your symptoms is an important part of understanding your health. Ask HealthKitty about symptoms you've logged and get a clear picture of what's been going on. Menopause, when you want to ask Ask whether you're in menopause, when perimenopause started, or about bleeding after menopause, and HealthKitty answers from what you've recorded in Apple Health. It tells you what your own entries say and when you made them — never a diagnosis. Your data stays on your device HealthKitty is built with privacy at its core. Your health data never leaves your iPhone — your conversations and your insights are generated on-device using Apple Intelligence. Nothing is sent to external servers. Ever. Terms of Use: https://healthkitty.app/terms/ Privacy Policy: https://healthkitty.app/privacy/

Screenshots

Strengthiness Interval Timer4 screens
Health Kitty4 screens

Verdict

The call

The clearest difference is price: Health Kitty at Free against Strengthiness Interval Timer's $0.99. Health Kitty also leads on update cadence (every 2 weeks vs every 5 months). Strengthiness Interval Timer's advantage is in-app purchases (none vs 2) and chart position (#159 vs unranked). On ads and device support 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

Health Kitty is free to download; Strengthiness Interval Timer costs $0.99 up front. Health Kitty sells 2 in-app purchases, starting at $5.99 per month. Strengthiness Interval Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Strengthiness Interval Timer ships an update every 5 months, Health Kitty every 2 weeks. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

Scorecard5 real differences · 6 level
Strengthiness Interval Timer versus Health Kitty: the parameters behind the verdict, then further details
ParameterStrengthiness Interval TimerHealth Kitty
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
Best chart rank#159 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, Vision Pro
Requires iOS13 — better26.0
Further details — not scored
Size1 MB20 MB
Age rating4+4+
DeveloperStrengthiness, LLCDelightful Apps PTY LTD

In-app purchases

None

Strengthiness Interval Timer

No in-app purchases

2 purchases

Health Kitty

Subscriptions2
  • Health Kitty+ Monthly7 Days trial$5.991 Month
  • Health Kitty+ Annual1 Month trial$59.991 Year

Questions

Is Strengthiness Interval Timer free?
Strengthiness Interval Timer costs $0.99, with no in-app purchases.
Is Health Kitty free?
Health Kitty is free to download, with in-app purchases available.
Do Strengthiness Interval Timer or Health Kitty have ads?
Neither Strengthiness Interval Timer nor Health Kitty shows ads.
Which is updated more often, Strengthiness Interval Timer or Health Kitty?
Strengthiness Interval Timer ships an update every 5 months, and Health Kitty every 2 weeks. Most recently, Strengthiness Interval Timer was updated on October 23, 2026 and Health Kitty on October 17, 2026.

Other comparisons