90daysChallenge vs PartCycle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
90daysChallenge
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Focus 90 is your dedicated focus training companion, designed to help you build habits that stick. Key Features: 90-Day Challenge Tracker – Visualize your progress and stay on course. Deep Focus Mode – Achieve peak productivity with 90-minute immersive sessions. Sprint Mode – Perfect for a quick 2-minute burst of concentration. Daily Reminders – Personalized alerts to ensure you never miss a day. Daily Motivation – 100 inspiring bilingual (English & Chinese) quotes from legendary athletes. Start your 90-day focus journey today. Master your concentration and achieve your goals!
PartCycle
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PartCycle is a maintenance tracker designed for equipment consumables, parts, and replacement cycles. Record installation dates, set replacement intervals, receive reminders, and keep a clear history of every part you replace. Use PartCycle for water filters, home appliances, vehicle parts, office equipment, tools, machines, or any item that needs regular replacement. Key features: ・Part life tracking Set an installation date and replacement cycle for each part. PartCycle helps you see what is healthy, due soon, or overdue. ・Replacement reminders Choose when you want to be reminded before a part expires. Get notifications when maintenance is coming up or already overdue. ・Equipment and parts management Create equipment profiles and assign related parts to them. Keep filters, batteries, accessories, and consumables organized by device. ・Photos and thumbnails Attach photos to parts and equipment so you can quickly identify models, locations, and details. ・Replacement history Record each replacement and easily check when a part was last changed. ・Offline-first experience Your data is stored locally first, so you can manage your parts even without an internet connection. ・Pro A one-time purchase that unlocks local capacity for 200 parts and 50 equipment. Cloud sync is not included. ・Premium Unlock 1000 parts, 300 equipment, cloud sync, and backup. Download PartCycle and make maintenance easier, clearer, and more reliable. Privacy Policy: https://docs.google.com/document/d/10kBJ0UT7iY1FueKgsL1pfncuJGCyRkwuVWsayfd-8Lc/view Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: 90daysChallenge at none against PartCycle's 3. PartCycle's advantage is update cadence (every 10 days vs every 5 weeks). On price, ads, device support 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
Both are free to download. PartCycle sells 3 in-app purchases, starting at $1.49 per month. 90daysChallenge asks for nothing beyond the download.
90daysChallenge ships an update every 5 weeks, PartCycle every 10 days. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.
| Parameter | 90daysChallenge | PartCycle |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 175 MB |
| Age rating | 4+ | 4+ |
| Developer | HSIN JUI YU | HANGRUEI WEN |
In-app purchases
90daysChallenge
No in-app purchases
PartCycle
- Premium Monthly7 Days trial$1.491 Month
- Premium Yearly7 Days trial$6.491 Year
- Pro Lifetime$11.99
Questions
Is 90daysChallenge free?
Is PartCycle free?
Do 90daysChallenge or PartCycle have ads?
Which is updated more often, 90daysChallenge or PartCycle?
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