Comparison

Interval(x) vs Stretch Timer

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

Head to head
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.

About

Stretch Timer

Features
Read full description

Flexibility built into your day, one routine at a time. Stretch Timer helps you reduce tension and improve mobility with guided routines that actually fit your schedule. FEATURES: • 3 pre-built routines: 5min Quick, 10min Full Body, 15min Deep Stretch • Auto-advance timer guides you through each stretch • Full body coverage: Neck, Shoulders, Back, Hips, Legs, Arms • Track completion counts for each routine • Log how you feel after each session • Weekly completion report • Fun flexibility facts during stretches • Build streaks with protective shields INSIGHTS & TRENDS: • See which routines you do most • Track mood improvements post-stretch • Monitor weekly consistency • Identify which body parts you target most PRIVACY FIRST: All data is stored locally on your device. No accounts required. No cloud sync. No one sees your data but you. Stretch Timer is free and ad-supported. Download now and start stretching today.

Screenshots

Interval(x)3 screens
Stretch Timer4 screens

Verdict

The call

The clearest difference is ads: Interval(x) at none against Stretch Timer's shown. Stretch Timer's advantage is iOS requirement (15.1 vs 18.1). On price, 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.

Scorecard2 real differences · 7 level
Interval(x) versus Stretch Timer: the parameters behind the verdict, then further details
ParameterInterval(x)Stretch Timer
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 10 days—
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.115.1 — better
Further details — not scored
Size2 MB26 MB
Age rating4+4+
DeveloperShapeHaven Innovations LLCBlas Prieto

In-app purchases

None

Interval(x)

No in-app purchases

None

Stretch Timer

No in-app purchases

Questions

Is Interval(x) free?
Interval(x) is free to download, with no in-app purchases.
Is Stretch Timer free?
Stretch Timer is free to download, with no in-app purchases.
Do Interval(x) or Stretch Timer have ads?
Stretch Timer shows ads; Interval(x) does not.

Other comparisons