Comparison

Custom Interval Timers vs Interval(x)

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

Head to head
About

Custom Interval Timers

Design personalized interval timers for workouts or productivity. Its intuitive editor allows for custom flows with various settings like countdowns and personalized interfaces. Offers light/dark modes and an option to disable ads.

Highlights
  • Customizable interval flows
  • Intuitive timer editor
  • Count up or down timers
  • Personalized running interface
  • Light/dark mode
  • Ad-free option
Features
Read full description

Create highly customizable interval timers in a beautiful Interface. Interval timers are useful for exercise, like High-intensity interval training (HIIT) or Tabata, and can also be used to manage productivity, events, and more! This app provides a fascinatingly simple and intuitive editor for setting up your own custom timers. With just a few building blocks you can create the exact experience you want. Multiple settings to match your preferences: - Count up or down - Personalize the running interface to show what matters to you - Light/dark mode - Disable ads for free!

About

Interval(x)

An open-source interval timer designed for precision and privacy. Configure work and rest periods with millisecond accuracy for training or daily routines. It offers a transparent, data-free experience for users who value control and simplicity.

Highlights
  • Open Source Transparency
  • Zero Data Collection
  • Millisecond Interval Precision
  • Customizable Work/Rest Periods
  • Lightweight and Power-Efficient
  • Privacy-First Design
Features
Read full description

Interval(x): Open Source Precision for Engineers Engineered for precision and transparency, Interval(x) is the ultimate interval timer for those who value control, simplicity, and privacy. Built by engineers for engineers, this app delivers unmatched timing accuracy without the frills—or the data collection. Why Engineers Love Interval(x): Open Source: Fully transparent and modifiable—because we believe in community-driven development. Zero Data Collection: Your data is yours. Interval(x) operates without tracking, analytics, or unnecessary permissions. Customizable and Precise: Configure work/rest intervals down to the millisecond to match your exact training needs. Efficient Design: Lightweight, power-efficient, and designed for those who demand performance. Privacy-First, Community-Driven Interval(x) is a privacy-focused tool that doesn't track your activity or collect your data. Its open-source codebase is available for review and contributions, ensuring transparency and trust. Whether you're training for endurance, strength, or just optimizing your daily routine, Interval(x) provides the precision and simplicity you need without sacrificing your privacy. Download Interval(x) today and experience fitness on your terms. Power your workouts with open source freedom and engineering-grade accuracy.

Screenshots

Custom Interval Timers4 screens
Interval(x)3 screens

Verdict

The call

The clearest difference is ads: Interval(x) at none against Custom Interval Timers's shown. Interval(x) also leads on update cadence (every 10 days vs every 4 months) and monetization model (free vs ad-supported). Custom Interval Timers's advantage is ratings volume (14 vs 1) and iOS requirement (15.1 vs 18.1). On price, rating, 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

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Custom Interval Timers against 5.0 for Interval(x). That said, the two scores are not equally well evidenced: Custom Interval Timers has 14 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Custom Interval Timers ships an update every 4 months, Interval(x) every 10 days. The most recent releases landed on August 24, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
Custom Interval Timers versus Interval(x): the parameters behind the verdict, then further details
ParameterCustom Interval TimersInterval(x)
PriceFreeFree
Rating5.0 (14 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings14 — better1
Update frequencyEvery 4 monthsEvery 10 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better18.1
Further details — not scored
Size40 MB2 MB
Age rating4+4+
DeveloperAlex RichShapeHaven Innovations LLC

Customer experience

Custom Interval Timers

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Interval(x)

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

In-app purchases

None

Custom Interval Timers

No in-app purchases

None

Interval(x)

No in-app purchases

Questions

Is Custom Interval Timers free?
Custom Interval Timers is free to download, with no in-app purchases.
Is Interval(x) free?
Interval(x) is free to download, with no in-app purchases.
Which has better reviews, Custom Interval Timers or Interval(x)?
Custom Interval Timers and Interval(x) are both rated 5.0 out of 5 on the App Store, from 14 and 1 ratings respectively.
Do Custom Interval Timers or Interval(x) have ads?
Custom Interval Timers shows ads; Interval(x) does not.
Which is updated more often, Custom Interval Timers or Interval(x)?
Custom Interval Timers ships an update every 4 months, and Interval(x) every 10 days. Most recently, Custom Interval Timers was updated on August 24, 2026 and Interval(x) on September 18, 2026.

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