Deflection Lite vs DeadLineTodo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Deflection Lite
This app provides interactive and precise structural beam analysis. Easily visualize beam bending by dragging loads and supports, and calculate key engineering results like reactions, shear force, and bending moment.
- Interactive beam bending visualization
- Calculate reactions, shear force, and bending moment
- Built-in cross-section databases
- Unlimited loads and supports
- Export design to shareable permalink
- Metric and standard units
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Deflection Lite is the most interactive, fast, and precise app available for structural beam analysis. Simply drag loads and supports on the beam, and see how it bends. RESULTS Calculate reactions, shear force, bending moment, and beam deflection quickly and easily. CROSS SECTION DATABASES Specify elastic modulus and moment of inertia values directly, or find common shapes and materials using the built-in databases, which include most international steel sections, as well as some aluminum and wood shapes. UNLIMITED LOADS AND SUPPORTS Simply drag any load or support on the beam. • Concentrated point loads • Distributed loads • Moment loads • Simple supports • Fixed supports • Fixed hinges • Floating Gerber hinges OTHER FEATURES • Export your design to a permalink that you can share. • Automatic detection of local maxima and minima in diagrams • Metric and standard measurement units CONTACT We like to hear from you! Please email contact@ketchep.com if you have any issues, questions, or comments.
DeadLineTodo
This app helps users manage tasks and combat procrastination with features like progress block tracking, daily widgets, and synchronized reminders. It offers detailed statistics on efficiency, time spent, and task status, with multi-device sync and a dark mode option.
- Progress Block Tracking
- Daily Task Widget
- Synchronized Reminders
- Calendar Synchronization
- Repeat Tasks
- Task Timer
- Efficiency Score Statistics
- iCloud Multi-Device Sync
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As an INFP I have a real headache with procrastination and decided to develop an efficiency app to help me catch up with DeadLine! -- Software Features -- Progress Block Tracking (width indicates time required for task) Daily Task Widget Reminders Synchronisation (to-do page drop down to refresh) Calendar Synchronisation (same as above) Repeat Tasks Task Timer Urgent/Timeout/Overdue Notification Reminders Efficiency Score Statistics Accumulated Time Spent Statistics Time Difference Statistics Heat Map Statistics Search Tasks Dark Mode iCloud Multi-Device Sync EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://privacy.1ts.fun/product/240215ZQ15RbX8mfZIgP Positive feedback is welcome!
Screenshots
Verdict
Deflection Lite and DeadLineTodo both sit at 4.5 stars, but that hides the real split: 100% of DeadLineTodo's written reviews are positive against 44% of Deflection Lite's. DeadLineTodo also leads on update cadence (every 3 days vs every 3 months). Deflection Lite's advantage is in-app purchases (none vs 3) and ratings volume (47 vs 2). On price, rating, 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. DeadLineTodo sells 3 in-app purchases, starting at $1.99 per month. Deflection Lite asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.5 for Deflection Lite against 4.5 for DeadLineTodo. That said, the two scores are not equally well evidenced: Deflection Lite has 47 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 44% of Deflection Lite's written reviews are positive against 100% of DeadLineTodo's.
Deflection Lite ships an update every 3 months, DeadLineTodo every 3 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | Deflection Lite | DeadLineTodo |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (47 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 44.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 47 — better | 2 |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 108 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Ketchep | 林琴 黄 |
Customer experience
Deflection Lite
DeadLineTodo
In-app purchases
Deflection Lite
No in-app purchases
DeadLineTodo
- Subscribe to Monthly Premium$1.991 Month
- Subscribe to Quarterly Premium$2.993 Months
- Purchase premium features$8.99









