Comparison

Strengthiness Interval Timer vs Silent Sleep Training

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

Silent Sleep Training

Read full description

Silent Sleep Training® - solution against sleep apnea without CPAP Eliminate the causes of snoring and sleep apnea permanently - in a few weeks. The Silent Sleep Training is a certified medical product, Made in Switzerland. Playfully you train your connective tissue in the throat and your throat muscles. The app, your instructor guides you through the training and ensures that you always train optimally.

Screenshots

Strengthiness Interval Timer4 screens
Silent Sleep Training3 screens

Verdict

The call

The clearest difference is price: Silent Sleep Training at Free against Strengthiness Interval Timer's $0.99. Strengthiness Interval Timer's advantage is chart position (#174 vs unranked) and iOS requirement (13 vs 16.5). On update cadence, ads, in-app purchases 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

Silent Sleep Training is free to download; Strengthiness Interval Timer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Strengthiness Interval Timer ships an update every 5 months, Silent Sleep Training every 4 months. The most recent releases landed on October 1, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 8 level
Strengthiness Interval Timer versus Silent Sleep Training: the parameters behind the verdict, then further details
ParameterStrengthiness Interval TimerSilent Sleep Training
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#174 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13 — better16.5
Further details — not scored
Size1 MB48 MB
Age rating4+17+
DeveloperStrengthiness, LLCAsate AG

In-app purchases

None

Strengthiness Interval Timer

No in-app purchases

None

Silent Sleep Training

No in-app purchases

Questions

Is Strengthiness Interval Timer free?
Strengthiness Interval Timer costs $0.99, with no in-app purchases.
Is Silent Sleep Training free?
Silent Sleep Training is free to download, with no in-app purchases.
Do Strengthiness Interval Timer or Silent Sleep Training have ads?
Neither Strengthiness Interval Timer nor Silent Sleep Training shows ads.
Which is updated more often, Strengthiness Interval Timer or Silent Sleep Training?
Strengthiness Interval Timer ships an update every 5 months, and Silent Sleep Training every 4 months. Most recently, Strengthiness Interval Timer was updated on October 1, 2026 and Silent Sleep Training on September 28, 2026.

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