Rytek vs No Sugar Diary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rytek
Log your weightlifting sessions, track progress, and analyze your performance with this offline-first strength training journal. Create custom plans or follow popular routines, and review personal records and training readiness. Share workout summaries or export your data.
- Log weight, reps, RPE, and sets
- Create and run custom workout plans
- Track exercise progress and PRs
- Review volume, consistency, and readiness
- Generate workout recap cards
- Export training data and local backups
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Rytek is a local-first strength training log for recording workouts, following a plan, and reviewing progress over time. What you can do: • Log weight, reps, RPE, warm-up sets, and completion • Create and run 5x5, PPL, upper/lower, full-body, or custom plans • Start planned workout days from Today and track exercise progress • Review PRs, estimated 1RM, volume, consistency, and Training Readiness • See plan completions, skipped exercises, and extra work • Create workout recap cards to save or share • Export training data and use local backup and sync tools Core workout logging works offline, without a social feed or leaderboard. Pro is a one-time purchase, not a subscription. It unlocks multiple plans, plan copying, detailed plan stats, data export, local backups, and sync. Privacy Policy: https://rytek.naxs.top/privacy-policy Terms of Use: https://rytek.naxs.top/terms-of-use
No Sugar Diary
This habit journal helps you track and reduce any urge or habit you want to change, from food cravings to screen time. Record your progress, feelings, and successes to stay consistent and regain control over your lifestyle choices.
- Customizable habit labeling
- Daily progress tracking
- Streak and total count monitoring
- Journal entries with text, image, and voice
- Shareable progress cards
- Optional offline AI companion
- Apple Watch data sync
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No Sugar Diary is a habit journal app that helps you record change and stay consistent. Here, "sugar" does not have to mean only food. It can also stand for any urge or habit you want to reduce, resist, or gradually quit. You can give it your own label, such as sugar, milk tea, staying up late, scrolling, gaming, or anything else you want to regain control over. You can use it to: - Create your own habit label - Record whether you stayed on track each day - Track streaks and total counts - Write down your feelings and changes - Look back on your progress over time - Generate shareable cards for each step forward - Add text, image, and voice entries - Optionally enable local offline AI companion replies - Sync selected progress data with Apple Watch No Sugar Diary is more like a personal record of staying with yourself. It helps you notice urges, track fluctuations, and keep every small success and every fresh start. Great for tracking: - Quitting sugar - Drinking less milk tea - Snacking less - Staying up less late - Spending less time scrolling - Playing fewer games - Any lifestyle habit you want to change gradually Notes: - This app is for personal habit tracking, self-observation, and daily encouragement. It does not provide medical diagnosis, treatment advice, or professional health guidance. - Your diary entries and records stay on your device by default. If you enable local offline AI, replies and generation are designed to run on your device whenever possible. - The AI feature requires decent device performance. It is only supported on iPhone 13 or newer, and iPad Pro, iPad Air, iPad mini, and iPad released in 2021 or later with at least 6GB of RAM. Not available on older devices. AI responses are for encouragement and light support only and are not medical, nutrition, or other professional advice.
Screenshots
Verdict
The clearest difference is price: Rytek at Free against No Sugar Diary's $0.99. No Sugar Diary's advantage is in-app purchases (none vs 1) and device support (4 vs 1). On update cadence and ads 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
Rytek is free to download; No Sugar Diary costs $0.99 up front. Rytek sells 1 one-off in-app purchase. No Sugar Diary asks for nothing beyond the download.
Rytek ships an update weekly, No Sugar Diary every 9 days. Both last shipped on November 5, 2026.
| Parameter | Rytek | No Sugar Diary |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 73 MB | 483 MB |
| Age rating | 4+ | 12+ |
| Developer | 文超 李 | 林蓉 李 |
Customer experience
Rytek
No Sugar Diary
In-app purchases
Rytek
- Pro (Lifetime)$8.99
No Sugar Diary
No in-app purchases









