Time vs Manual Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Time
This app simplifies time calculations for personal flight logs. It exclusively handles addition and subtraction of hours and minutes, automatically interpreting the last two digits of any input as minutes.
- Time addition
- Time subtraction
- Automatic minute interpretation
- Personal flight log focus
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A simple time calculator (hours + minutes) designed specifically for personal flight log calculations — it only performs addition and subtraction. The last two digits of any entered number are automatically treated as minutes.
Manual Sync
Easily transfer annotations and bookmarks between PDF documents. This tool uses precise matching for professionals who update manuals frequently, ensuring notes stay in place. All processing is done locally for enhanced privacy.
- Smart word-based annotation matching
- Bookmark hierarchy migration
- Split-view manual review
- Local device processing
- Annual and lifetime subscription options
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ManualSync: Effortless PDF Revision Assistant Seamlessly transfer your annotations and bookmarks to revised PDF manuals in seconds. Designed for professionals who handle frequent document updates, ManualSync uses high-precision matching to ensure your notes land exactly where they belong. Key Features: Smart word-based annotation matching Bookmark hierarchy migration Split-view manual review Privacy First: All processing happens locally on your device. Your manuals never leave your side. [Subscription Information] • ManualSync Annual Premium: $9.99/year (Includes a 3-day free trial) • ManualSync Lifetime Access: $24.99 (One-time purchase) [Payments and Renewal] • Payment will be charged to your iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Your account will be charged for renewal within 24-hours prior to the end of the current period. • You can manage or turn off auto-renew in your Apple ID Account settings at any time after purchase. • No cancellation of the current subscription is allowed during the active period. • Terms of Use (Standard Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://aerosyncstudio.kr/privacy-manualsync.html
Screenshots
Verdict
The clearest difference is rating: Manual Sync at 5.0 against Time's 3.0. Manual Sync also leads on update cadence (every 2 days vs every 6 days). Time's advantage is in-app purchases (none vs 2). On price, ratings volume, 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. Manual Sync sells 2 in-app purchases, starting at $9.99 per year. Time asks for nothing beyond the download.
Manual Sync holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Time ships an update every 6 days, Manual Sync every 2 days. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.
| Parameter | Time | Manual Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 6 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Kazuyuki Saito | AeroSync Studio |
Customer experience
Time
Manual Sync
In-app purchases
Time
No in-app purchases
Manual Sync
- ManualSync Annual Premium$9.991 Year
- ManualSync Annual Premium$24.99
