NailInsight vs SweatDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NailInsight
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NailInsight – Break the Nail Biting Habit Break free from nail biting, one day at a time.NailInsight is your personal companion for overcoming the nail biting habit. With daily check-ins, streak tracking, and a lovable companion that grows alongside your progress, building a new habit becomes a motivating and rewarding journey.Grow Your Companion Choose your personal companion — a flower or a cat — and watch it flourish as you stay bite-free. Each successful day fills your companion with life, slowly transforming it into something beautiful. Personalize it with stunning colors like Emerald, Sapphire, Turquoise, and Rose to make your journey truly yours.Build Powerful Streaks Consistency is the key to breaking habits. Track your bite-free days with a motivating streak system, reach milestones, and celebrate your progress. Your longest streak is always visible to remind you how far you've come.Visualize Your Progress Stay motivated with a clear progress graph that shows how your journey evolves over time. Spot improvements, identify patterns, and celebrate every step forward.Smart Weekly Reminders Stay consistent with gentle weekly reminders that keep you on track. Never miss a check-in and keep your streak growing.Build Your Companion Collection Complete growth cycles to unlock and collect unique companion variations. Over time, you'll build a gallery of flowers and cats that represent your commitment and dedication.Key Features Daily bite-free / bitten check-in system Growing flower and cat companions with liquid-fill animations Streak tracking and milestone rewards Progress graph to visualize your journey Customizable companion colors (5 flower + 5 cat styles) Companion collection gallery Smart weekly reminders Beautiful dark glassmorphism interface Available in English and Turkish NailInsight Premium Unlock the full NailInsight experience with Premium: Unlimited habit tracking beyond the 14-day free trial Custom companion colors Smart reminder notifications Full companion collection system Subscription Options Monthly subscription Yearly subscription (best value) Payment will be charged to your Apple ID account upon confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current billing period. You can manage and cancel subscriptions in your Apple ID account settings. No cancellation of the current subscription is allowed during the active subscription period. Terms of Use: https://nailinsightai.web.app/terms-of-use.html Privacy Policy: https://nailinsightai.web.app/privacy-policy.html
SweatDiary
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Sweat Diary is a fast, distraction-free workout journal for your iPhone and Mac. Log your workouts, jot down notes, and find them later — no dashboards, no gamification, no clutter. • Log any workout in seconds - gym, running, cycling, rowing, kitesurfing, hiking, or your own custom type • Free-text notes for every entry - capture the details that matter to you • Attach photos to your sessions • See all your activities on a map • Full-text search to find any past workout instantly • Synch between Mac and iPhone via iCloud • Import via HealthKit on iPhone • Weekly activity strip and stats to stay aware without obsessing
Screenshots
Verdict
The clearest difference is in-app purchases: SweatDiary at none against NailInsight's 2. SweatDiary also leads on update cadence (every 4 days vs every 6 weeks). NailInsight's advantage is iOS requirement (13.0 vs 18.0). 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
Both are free to download. NailInsight sells 2 in-app purchases, starting at $2.99 per month. SweatDiary asks for nothing beyond the download.
NailInsight ships an update every 6 weeks, SweatDiary every 4 days. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.
| Parameter | NailInsight | SweatDiary |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, Mac |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 60 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Alim Keskin | Christoph Werner |
In-app purchases
NailInsight
- Premium Monthly Access$2.991 Month
- Premium Yearly Access$29.991 Year
SweatDiary
No in-app purchases









