Comparison

Length vs Intervals

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

Head to head
About

Length

Features
Read full description

Turn your device into a ruler and measure small distances in either imperial inches or metric cm and convert any value between the two units. Features: - inch/cm converter for any arbitrary value - tap and drag the line to snap to multiple values of 0.05in (left side) or 0.1cm (right side) - supports the iPad Pro, iPad Mini and all iPhones - support for the iPad multitasking (split view..)

About

Intervals

This app helps you manage work and rest periods with customizable timers. It features a visual countdown, interval tracking, and audible alerts to keep you focused and balanced during workouts, study sessions, or tasks.

Highlights
  • Customizable work and rest intervals
  • Round and total time calculation
  • Visual circular timer
  • Pause, resume, and navigate controls
  • Audible chime alerts
  • Progress indicators
Features
Read full description

Intervals: Your Ultimate Time Management Tool Take control of your time with Intervals, the ultimate app for managing work and rest periods. Whether you're working out, studying, or focusing on tasks, Intervals helps you stay productive and balanced. Customizable Intervals: - Work Time: Set the duration for your work periods to stay focused and productive. - Rest Time: Define your rest intervals to ensure you get the necessary breaks. - Rounds: Specify the number of sets you want to complete for an efficient routine. - Total Time Calculation: Automatically calculates and displays the total time for your configured intervals and sets.   User-Friendly Timer: - Visual Timer: A sleek circular timer visually indicates the remaining time for the current interval. - Interval Display: Clearly shows the current interval type (work or rest) and the remaining time. - Control Buttons: Easily pause, resume, or navigate through intervals with intuitive controls (previous, restart, next). - Progress Indicators: Keep track of the number of rounds completed with simple progress indicators. Alerts and Notifications: - Chime Alert: Enable an audible chime to notify you when an interval is over, keeping you on track without constantly checking your device. Easy Setup and Start: - Quick Configuration: Set up your intervals quickly and start your session with a single tap on the prominent "Go" button. Versatile Usage: Ideal for various activities such as workouts, study sessions, focus tasks, and more. With Intervals, you can optimize your time management, stay productive, and maintain a healthy balance between work and rest. Download Intervals today and take the first step towards better productivity and time management!

Screenshots

Length4 screens
Intervals3 screens

Verdict

The call

The clearest difference is price: Intervals at Free against Length's $0.99. Intervals also leads on update cadence (every 2 weeks vs every 11 months). Length's advantage is iOS requirement (12.0 vs 17.5). On 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

Intervals is free to download; Length costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Length ships an update every 11 months, Intervals every 2 weeks. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
Length versus Intervals: the parameters behind the verdict, then further details
ParameterLengthIntervals
Price$0.99Free — better
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 11 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.5
Further details — not scored
Size34 MB1 MB
Age rating4+4+
DeveloperPiet JonasAydin Metel

In-app purchases

None

Length

No in-app purchases

None

Intervals

No in-app purchases

Questions

Is Length free?
Length costs $0.99, with no in-app purchases.
Is Intervals free?
Intervals is free to download, with no in-app purchases.
Do Length or Intervals have ads?
Neither Length nor Intervals shows ads.
Which is updated more often, Length or Intervals?
Length ships an update every 11 months, and Intervals every 2 weeks. Most recently, Length was updated on October 18, 2026 and Intervals on October 6, 2026.

Other comparisons