Cycling through all six. Tap any point to stop.
Measured on six things
A HIIT and Tabata interval timer cued entirely in sound, like counting a storm's distance: the flash is silent, the sound carries the timing. Voice and beep cues call every interval and the halfway mark over your playlist, each at an independent volume, and the session works with the screen off. An incoming call resumes from the exact second. 0 ads, unlimited sessions, 0 accounts.
Security
41HTTP probe: HTTPS enforced, SPF present, but no HSTS, CSP, frame protection, X-Content-Type-Options, Referrer-Policy, or Permissions-Policy; DMARC absent. Checklist 3/12. No SOC 2, ISO, or pen-test signals found.
Screenshots
1 / 2
About this app
Thunder reaches you late by design: light arrives in silence, sound arrives seconds later, and the distance between them is something you measure with a count — no dial, no screen, ears doing the arithmetic. Intertakt is an interval timer built on that same trust in hearing. Your playlist keeps playing; over it a clear voice calls out each work period, each rest and the halfway mark, with countdown beeps ahead of every change, each channel at an independent volume. Start the session and train: it works with the screen off, on Do Not Disturb, through calls and app switches, resuming from the exact second anything interrupted it. The free tier is unlimited — 0 ads, ∞ sessions, 0 accounts — and Premium is a one-time purchase (custom plans, history, JSON export), not a subscription. Built with Flutter, offline-first. In pre-release: coming soon to Google Play; the waitlist and founding pricing are open at intertakt.com.
Key features
- 1Audio-first interval timer: voice cues and countdown beeps over your own music, with independent volumes for music, voice, and beeps.
- 2Screen-off, background operation: runs with the phone locked or in your pocket, survives calls and app switches, resumes from the exact second.
- 3Free tier with unlimited sessions, no ads, no account required; Premium is a one-time $3.99/$6.99 purchase (custom plans, history, JSON export).
Target customer profile
Drawn from the product itself, not from a survey.
Demographic
HIIT and Tabata athletes who train with headphones on
Pain points
Mid-set the screen is unreachable: gloves tied, hands full, phone face-down, and most timers still demand eyes
Primary needs
Interval timing delivered as sound over their own music, resuming to the exact second after interruptions
Demographic
Personal Trainers and Coaches
Pain points
Need to time multiple clients' intervals without being tethered to a phone or tablet.
Primary needs
Customisable intervals per exercise, loud cues over gym noise, and easy session management.
Demographic
Home Workout Enthusiasts
Pain points
Distractions from phone notifications, difficulty following complex routines without looking at screen.
Primary needs
Simple setup, voice guidance, and no ads to break focus during workouts.
Scout Review
Written by AI from measured evidence, scored out of 100.
Intertakt is a pre-release Android interval timer with a genuinely differentiated pitch: audio-first cues over your own music, screen-off operation, no accounts, no ads, and a one-time purchase instead of a subscription. The site is well-written and specific — it names real problems (screen unreachable mid-set, interruptions killing rounds, subscription fatigue) and answers them in a clear FAQ. The free tier is unlimited, which is rare and generous. But the product isn't shipped yet: it's 'coming soon to Google Play,' so nothing can be tested end-to-end. The security probe found only 3 of 12 checklist points, with no HSTS, CSP, or DMARC. No Lighthouse performance or accessibility data was available. The idea is strong and the positioning is sharp; the execution is still a promise. For a pre-release indie app, that's a reasonable place to be — but the score reflects what's verifiable today, not what's claimed.
Measure by measure
Usability
62Strong usability claims: 30-second setup, three-step flow, unlimited free tier, no account, FAQ covering real edge cases (calls, music, 15s intervals). Pre-release, so onboarding is untestable end-to-end.
Design
58No homepage render or app UI was available to audit this run; only maker promo cards were supplied. Site copy suggests a dark, audio-first aesthetic, but actual visual craft is unverified. Scored in the category-typical band.
Speed
58No Lighthouse performance measurement was available this run — no LCP, TBT, or CLS data. Site content is text-heavy with inline mockups; no benchmarks or lag complaints found. Scored in the category-typical band.
Security
41HTTP probe: HTTPS enforced, SPF present, but no HSTS, CSP, frame protection, X-Content-Type-Options, Referrer-Policy, or Permissions-Policy; DMARC absent. Checklist 3/12. No SOC 2, ISO, or pen-test signals found.
Accessibility
55No Lighthouse accessibility measurement was available this run — no contrast, alt-text, or keyboard audit data. Site claims EN / RU / ES voice cues and shows a language switcher. Android-only, pre-release, no WCAG statement found.
Growth
68Specific wedge: audio-first, screen-off interval timer for headphone-wearing HIIT athletes, no accounts, one-time purchase. Competitors are subscription-based or visual-first. Real underserved angle in a growing category.
Improvement areas
- Product is pre-release: not yet on Google Play, so onboarding, reliability, and the actual UI cannot be verified.
- Security headers are incomplete: no HSTS, CSP, frame protection, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, or DMARC (3/12 checklist points).
- No accessibility or performance data published; no WCAG statement or Lighthouse report to back up usability claims.
Design & Usability
Intertakt's design story is unverifiable this run — no homepage render, no app screenshots, only maker-supplied promo cards. The site copy paints a coherent dark, audio-first aesthetic with live timer mockups and preset cards, but none of that is the actual product. On usability, the claims are strong: 30-second setup, a three-step flow, unlimited free tier, no account, and an FAQ that answers real edge cases like call interruptions and 15-second interval steps. The free tier is genuinely free — no ads, no session caps — and Premium is a one-time $3.99/$6.99 purchase, not a subscription. That's a real differentiator against Seconds and the ad-supported Tabata timers. The catch: the app is pre-release, so none of this can be tested end-to-end. The waitlist is the only thing live. For a pre-release product, the usability positioning is sharp and specific; the execution is still a promise.
Speed & Security
Speed is a blank this run — no Lighthouse measurement, no LCP, TBT, or CLS data, and no published benchmarks. The site is text-heavy with inline mockups, which suggests a lightweight page, but that's an inference, not a measurement. Security is more concrete and less flattering: the HTTP probe found HTTPS enforced and SPF present, but no HSTS, no CSP, no frame protection, no X-Content-Type-Options, no Referrer-Policy, no Permissions-Policy, and no DMARC. That's 3 out of 12 checklist points. The product's no-account, no-cloud, on-device data model genuinely reduces attack surface — there's no user database to breach — but that's a design choice, not a security program. No SOC 2, ISO, pen-test, or bug bounty signals were found. For a pre-release indie app, the missing headers are common but still worth fixing before launch.
Accessibility & Growth
Accessibility has no measurement this run — no Lighthouse a11y data, no contrast or keyboard audit. The site claims EN / RU / ES voice cues and shows a language switcher, which is a real signal for multi-language support, but there's no WCAG statement, no screen-reader notes, and the product is Android-only and pre-release. Growth is where Intertakt has a genuine story. The category — interval timers for HIIT and Tabata — is crowded with Seconds (subscription-based, polished), Interval Timer (PFA) (visual-first, built to be watched), and generic ad-supported Tabata timers. Intertakt's wedge is specific and defensible: audio-first cues over your own music, screen-off operation, no accounts, and a one-time purchase instead of a subscription. That's aimed at a real underserved segment — athletes who train with headphones and can't look at a screen mid-set. The category has headroom, and the positioning is clear. The limit is execution: it's pre-release, the domain is 0.1 years old, and the app isn't on Google Play yet. The idea is good; the traction is zero so far.
Conclusion
Intertakt is aiming at a real gap: most interval timers are built to be watched, and most of the ones that aren't are either subscription-based or ad-supported. The audio-first, screen-off, no-account, one-time-purchase combination is a coherent answer to a specific athlete's problem. The site communicates that clearly and the FAQ handles the obvious objections. What's missing is the product itself — it's pre-release, so the waitlist is the only thing live. The security headers need work before launch, and there's no accessibility or performance data to evaluate. If the app ships and delivers on the background-audio reliability it promises, this could be a genuinely useful tool for a niche that's been underserved. Until then, it's a well-argued landing page and a $3.99 founding-price bet.
Suggestions for improvement
- Ship the Google Play build and publish real app screenshots so the UI can actually be evaluated.
- Add HSTS, CSP, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and DMARC before launch.
- Publish a Lighthouse performance and accessibility report to back up the '30 seconds to first interval' claim.
- Add a WCAG statement or accessibility page, especially given the voice-cue and multi-language features.
Alternatives comparison
Named competitors, point by point. Nobody paid to appear here or to be left out.
 Intertakt |  Interval Timer (PFA) |  Seconds | Tabata Timer | |
|---|---|---|---|---|
| Pricing model | Free tier unlimited; Premium one-time $3.99 (first 100) / $6.99, no subscription | Subscription-based (Seconds Pro) | Subscription-based | Ad-supported, free |
| Primary interaction model | Audio-first: voice cues and beeps over music, designed for screen-off use | Visual-first: big visual countdowns, built to be watched | Polished visual timer with speech alerts | Simple visual Tabata timer |
| Account requirement | No account required; data stored on device, offline-first | Not specified in collected evidence | Not specified in collected evidence | Not specified in collected evidence |
| Background / screen-off operation | Runs with screen off, survives calls and app switches, resumes from exact second | Not specified in collected evidence | Not specified in collected evidence | Not specified in collected evidence |
| Multi-language voice cues | EN / RU / ES voice cues | Not specified in collected evidence | Speech alerts (language support not specified) | Not specified in collected evidence |
Interval Timer (PFA)
Popular HIIT timer with big visual countdowns; built to be watched
Seconds
Polished interval timer with speech alerts; subscription-based
Tabata Timer
Simple Tabata timers; ad-supported
Comparing options? See Intertakt alternatives, scored side by side
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