Comparison

Mariabs · Interval Timer vs Next Round

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

Head to head
About

Mariabs · Interval Timer

Features
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Mariabs is a sharp, minimal interval timer for anyone who trains in rounds — tabata, HIIT, EMOM, circuits, or your own custom intervals. Set your prepare, work, rest, cycles, blocks, and block-rest durations in seconds. Press the white play button. Mariabs counts you in, calls out each phase, and chimes the final 3-2-1 of every interval so you can keep your eyes on what you're doing instead of on the screen. WHAT YOU GET • Six adjustable parameters: prepare, work, rest, cycles per block, number of blocks, and rest between blocks • Voice cues for every transition: "Prepare", "Work", "Rest", and "Block complete — get ready for the next" • Distinct musical chimes per phase, generated on-device, synced with light haptics • 3-2-1 countdown ticks before each phase change • Big, monochrome timer dial with a subtle progress ring tinted to the current phase • Cycle and block progress shown at all times so you always know where you are • Plays over whatever you're already listening to — music, podcasts, anything — and lowers it only for the moment Mariabs speaks • Stays awake automatically while a workout is running • Settings remembered between launches DESIGNED TO STAY OUT OF THE WAY The screen is dark, glanceable from across a gym, and built around one button. There are no menus, no levels, no streaks, no badges, no analytics. You configure once, then press play. PRIVACY Mariabs collects nothing. No account. No email. No analytics. No tracking. Your settings stay on your device. The privacy policy is one page; you can read it before you tap install. NO ADS Mariabs has no ads, no in-app purchases, and no premium tier. No account required.

About

Next Round

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A little stronger. Every round. Next Round is a simple interval timer for HIIT, Tabata, and your own work-rest sessions. Set your rhythm, press start, and let a double boxing bell tell you when it is time to move. YOUR PACE, YOUR RULES Start with HIIT or Tabata, then adjust work time, rest time, rounds, and a short preparation countdown. Each preset remembers your settings. The final work round ends your session without an extra rest. CLEAR AT A GLANCE A large countdown sits inside a clean progress dial. Lime means work; blue means rest. See your round and what comes next. Your screen stays awake while the timer runs in the app. HEAR YOUR NEXT MOVE An original double boxing bell marks interval changes, with a longer finish bell and optional haptics. Bells use your media volume, including in Silent Mode, and continue when your phone is locked. KEEP YOUR PLACE Pause, resume, skip an interval, or end the session. Your current timer survives leaving or reopening the app. A Live Activity mirrors your current interval countdown and round, with pause and resume on the Lock Screen. Dynamic Island is supported on compatible iPhones. Workout audio keeps the timer and bells running when locked. Calls and disconnected headphones pause the session. Optional local notifications add visual interval banners. If you force-quit the app, reopen it to restore your timer. JUST YOU AND THE TIMER No account, ads, subscriptions, or tracking. Your settings stay on your iPhone and are excluded from backups. No internet connection is needed to run your timer. Made for your next little effort.

Screenshots

Mariabs · Interval Timer4 screens
Next Round3 screens

Verdict

The call

The clearest difference is device support: Mariabs · Interval Timer at 3 against Next Round's 1. On price, ads, in-app purchases and iOS requirement 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.

Scorecard1 real difference · 5 level
Mariabs · Interval Timer versus Next Round: the parameters behind the verdict, then further details
ParameterMariabs · Interval TimerNext Round
PriceFreeFree
Update frequencyEvery 6 days—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS16.2 — better17.0
Further details — not scored
Size4 MB1 MB
Age rating4+4+
DeveloperPER MAGNE HELSETHFerdinand Johannes Mekelenkamp

In-app purchases

None

Mariabs · Interval Timer

No in-app purchases

None

Next Round

No in-app purchases

Questions

Is Mariabs · Interval Timer free?
Mariabs · Interval Timer is free to download, with no in-app purchases.
Is Next Round free?
Next Round is free to download, with no in-app purchases.
Do Mariabs · Interval Timer or Next Round have ads?
Neither Mariabs · Interval Timer nor Next Round shows ads.

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