Comparison

HIIT Timer vs MuscleMemo

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

Head to head
About

HIIT Timer

Features
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A simple timer app, perfect for HIIT training With an ultra-large full-screen timer display, you can instantly see your remaining time even in the middle of your workout. No complicated features—just the essential functions you need to keep your training smooth and focused. Main Features • Large, easy-to-read full-screen timer display • Automatic alternation between work and rest intervals • 3-second countdown before each start so you’re ready • Clear color coding: blue for work, orange for rest • Simple controls for pause, resume, and skip • Banner ads displayed on the home and timer screens Customization Options • Work time: freely set from 1 second to 15 minutes • Rest time: freely set from 1 second to 15 minutes • Sets: up to 99 sets supported • Dark mode & light mode • Available in both Japanese and English Training Records • Automatically saves completed sessions to history • Check up to your last 100 records • Stay motivated with visible training progress Designed for Usability • Runs in the background without interruption • Accurate timekeeping even with screen lock • Full accessibility support • User-friendly design to prevent misoperation Recommended for everyone—from beginners to advanced athletes—who wants to start HIIT training. No complex setup required. Download now and start your workout today! Privacy First All data is stored locally on your device and never shared externally.

About

MuscleMemo

Features
Read full description

The simplest workout log app — focused purely on recording your lifts. Tired of overly complex fitness apps? MuscleMemo lets you log a set in just 3 taps during your rest period. No social features, no complicated analytics — just fast, reliable tracking. ◆ Simple Recording Flow Select an exercise, enter weight and reps, save. Each set is saved individually in real-time. After saving, choose to continue with the same exercise or switch — one tap. ◆ Auto-fill Previous Records When you select an exercise, your last recorded weight and reps are filled in automatically. Just save if nothing changed, or make quick adjustments. ◆ 1RM Estimation (Epley Formula) See your estimated one-rep max in real-time as you enter your set data. Track your strength progress with science-backed calculations. ◆ Motivating Statistics ・Training streak (consecutive days) ・Workouts this month ・Most used exercises TOP 3 ・Personal records by exercise TOP 3 ◆ 40+ Preset Exercises + Custom All major compound and isolation movements included. Add your own exercises with custom names and body part categories. Favorite your go-to exercises for quick access. ◆ 100% Private & Offline All data stays on your device. No servers, no accounts, no tracking. Your training data is yours alone. ◆ Native iOS Design with Dark Mode Clean, distraction-free interface that feels right at home on iOS. Full dark mode support for low-light gym environments.

Screenshots

HIIT Timer4 screens
MuscleMemo4 screens

Verdict

The call

The clearest difference is in-app purchases: HIIT Timer at none against MuscleMemo's 1. MuscleMemo's advantage is update cadence (weekly vs every 5 weeks) and iOS requirement (17.0 vs 26.0). On price, ads 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. MuscleMemo sells 1 one-off in-app purchase. HIIT Timer asks for nothing beyond the download.

UpkeepUpdate frequency

HIIT Timer ships an update every 5 weeks, MuscleMemo weekly. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 3 level
HIIT Timer versus MuscleMemo: the parameters behind the verdict, then further details
ParameterHIIT TimerMuscleMemo
PriceFreeFree
Update frequencyEvery 5 weeksWeekly — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size36 MB13 MB
Age rating4+4+
DeveloperCaprio LabShuto Nishiyama

In-app purchases

None

HIIT Timer

No in-app purchases

1 purchases

MuscleMemo

One-time1
  • Remove Ads$2.99

Questions

Is HIIT Timer free?
HIIT Timer is free to download, with no in-app purchases.
Is MuscleMemo free?
MuscleMemo is free to download, with in-app purchases available.
Do HIIT Timer or MuscleMemo have ads?
Both HIIT Timer and MuscleMemo show ads.
Which is updated more often, HIIT Timer or MuscleMemo?
HIIT Timer ships an update every 5 weeks, and MuscleMemo weekly. Most recently, HIIT Timer was updated on October 3, 2026 and MuscleMemo on October 4, 2026.

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