Zenther vs Delta Timer △
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zenther
Intelligently track workouts, nutrition, and progress with personalized insights. This app prioritizes your privacy by processing all data on your device, offering a secure and user-friendly fitness companion.
- AI-powered fitness tracking
- Private on-device data processing
- Workout and nutrition logging
- Personalized daily targets
- Streak tracking and achievements
- Home and lock screen widgets
- Apple Health and Watch integration
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**Your fitness journey, intelligently tracked and completely private.** Zenther helps you understand your workouts, nutrition, and progress with smart insights - all while keeping your data secure on your device. **COMPLETE FITNESS TRACKING** Sleep quality tracking with personalized recommendations. Daily steps and activity monitoring. Workout streak tracking with milestone celebrations. **NUTRITION MADE SIMPLE** Easy food logging with photo, voice, or manual entry. Smart macro tracking based on your fitness goals. Calorie balance tracking for weight management. Personalized daily targets that adapt to your activity. Progress tracking for weight loss, gain, or maintenance. **MOTIVATION THAT WORKS** Streak tracking with visual progress indicators. Personal record detection and achievements. Smart insights about your workout patterns. Contextual motivation based on your actual progress. Gentle reminders that respect your schedule. **BEAUTIFUL WIDGETS** 8 different widgets for quick access to your stats. Live workout data on your home screen and lock screen. Privacy-protected as the data is hidden when your phone is locked. Beautiful design that complements iOS. **YOUR DATA STAYS YOURS** Everything processed on your device and nothing sent to servers. No account required, no data collection. Full transparency about what we access. You control all permissions. **WORKS WITH YOUR APPLE DEVICES** It directly integrates with Apple Health and Apple Watch. Siri shortcuts for quick progress checks. Automatic sync across all your devices. Native iOS design that feels right at home. **FOR EVERYONE** Whether you are just starting out or training seriously, Zenther adapts to your level. Beginner-friendly with helpful guidance. Advanced analytics for serious athletes. Flexible goals that match your lifestyle. No judgment, just helpful insights like a partner. **SMART INSIGHTS** Instead of overwhelming you with data, Zenther highlights what matters. When you perform best during the week. Whether you are on track with your nutrition goals. Simple suggestions to improve your consistency. Download Zenther today and start your journey toward optimal health and fitness! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Delta Timer △
This interval timer app guides users through various training routines like HIIT and Tabata. It offers customizable workouts with adjustable exercise and rest periods, featuring a minimalist design with light and dark modes for focused training.
- Customizable workout creation
- Adjustable exercise and rest durations
- Minimalist, distraction-free interface
- Light and dark modes
- Supports HIIT, Tabata, EMOM, and circuits
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Delta Timer is a simple yet powerful interval timer built to keep you focused during training. It helps guide your HIIT, Tabata, or any other interval-based workout with ease and precision. Whether it’s HIIT, Tabata, EMOM, strength circuits, or a custom routine, Delta Timer adapts to your rhythm — guiding you through every round. Check some of the Delta Timer features: Customizable workouts: Create and fine-tune your training structure — from quick Tabata bursts to complete circuit sessions. Adjust exercise, rest, warmup, cooldown, and round durations with ease. Minimal and intuitive design: A distraction-free interface that keeps you aware of every phase of your workout, even mid-movement. Light and Dark Modes: Train comfortably anywhere, with a look that adapts to your environment. Free and ad-free: All essential features are available for free. No subscriptions, no clutter.
Screenshots
Verdict
The clearest difference is rating: Delta Timer △ at 5.0 against Zenther's 3.7. Delta Timer △ also leads on in-app purchases (none vs 4) and iOS requirement (18.1 vs 26.0). Zenther's advantage is update cadence (every 4 days vs every 10 days) and ratings volume (3 vs 1). 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
Both are free to download. Zenther sells 4 in-app purchases, starting at $1.59 per 7 days. Delta Timer △ asks for nothing beyond the download.
Delta Timer △ holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
Zenther ships an update every 4 days, Delta Timer △ every 10 days. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.
| Parameter | Zenther | Delta Timer △ |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 4 days — better | Every 10 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 18.1 — better |
| Further details — not scored | ||
| Size | 17 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Rudrank Riyam | Thomas Delgado Dias |
In-app purchases
Zenther
- Weekly$1.597 Days
- Monthly$3.891 Month
- Annual$28.491 Year
- Lifetime$59.99
Delta Timer △
No in-app purchases









