PartCycle vs PlainLock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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/
PlainLock
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PlainLock is a deliberately simple screen-time self-control tool. TWO WAYS TO SET A LIMIT • Schedule blocks: choose days and times, then the selected apps are blocked. • Daily limits: after the minutes you set are used, the apps stay blocked until tomorrow. • Shared group limits: put distracting apps in one group so switching apps cannot bypass the limit. • Group app limit: each group supports up to 50 apps, with a clear message when the limit is exceeded. • Cooling-off period: when you really need temporary access, wait 5 seconds, then unlock for the short duration you chose. LANGUAGES • Available in Traditional Chinese, English, Japanese, and Spanish. READ BEFORE YOU BUY • One purchase. No subscription. No in-app purchases. • Every rule stays on your device. The app makes no network requests and collects no app data. • This is a self-control tool, not a security tool. You can always remove restrictions by disabling its Screen Time permission in Settings. • Applying or clearing a block depends on iOS scheduling and can take one to two minutes. • Requires iOS 17.0 or later. Only iOS versions tested at release are supported; future compatibility and continuing updates are not guaranteed.
Screenshots
Verdict
The clearest difference is price: PartCycle at Free against PlainLock's $2.99. PartCycle also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). PlainLock's advantage is in-app purchases (none vs 3) and update cadence (every 5 days vs every 10 days). On 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
PartCycle is free to download; PlainLock costs $2.99 up front. PartCycle sells 3 in-app purchases, starting at $1.49 per month. PlainLock asks for nothing beyond the download.
PartCycle ships an update every 10 days, PlainLock every 5 days. The most recent releases landed on September 22, 2026 and September 14, 2026 respectively.
| Parameter | PartCycle | PlainLock |
|---|---|---|
| Price | Free — better | $2.99 |
| Update frequency | Every 10 days | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 175 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | HANGRUEI WEN | Chang Jhih Yeh |
In-app purchases
PartCycle
- Premium Monthly7 Days trial$1.491 Month
- Premium Yearly7 Days trial$6.491 Year
- Pro Lifetime$11.99
PlainLock
No in-app purchases





