Comparison

Deflection vs Memento

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Deflection

Calculate structural behavior for beams, 2D trusses, and 2D frames. Visualize reaction forces, shear, bending moment, and deflection. Analyze internal stresses along the beam and cross-section.

Highlights
  • Beam, 2D truss, and 2D frame analysis
  • Graphical output of results
  • Internal shear and bending stress calculation
  • 2D frame and truss editor
  • Cross-section editor with automatic calculations
  • Built-in database and quick-start templates
Features
Read full description

Deflection is a powerful, versatile calculator for beams, 2D trusses, and 2D frames. The interface is simple and intuitive, and the graphical output is state-of-the-art. In addition to reaction, shear, bending moment, and deflection results, Deflection also computes internal shear and bending stress along the cross section and along the beam. 2D FRAME AND TRUSS EDITOR The 2D editor is seamlessly integrated with the beam editor. Draw arbitrary frame and truss structures and apply loads and constraints using the same simple interface as for beams. You can visualize results directly within the 2D editor, or you can select a beam and get additional insights. INTERNAL STRESSES Obtain internal bending and shear stress diagrams in addition to shear, bending, and deflection diagrams. The internal stresses can be visualized along the length of the beam as well as along the vertical axis of the cross section using the beam editor. CROSS SECTION EDITOR Edit built-in cross sections. Moment of inertia and area values are automatically calculated and applied to the rest of the beam calculations. MORE FEATURES • The built-in database contains more data for your reference and convenience. • Apply beam self-weight optionally • Unlimited design files • Quick-start templates CONTACT We like to hear from you! Please email contact@ketchep.com if you have any issues, questions, or comments.

About

Memento

This app offers a streamlined approach to managing your daily tasks and important items. Create organized lists with time or location-based alerts to ensure nothing is forgotten. It integrates with your devices and virtual assistants for seamless management.

Highlights
  • Create organized lists
  • Time and location alerts
  • Powerful notifications
  • iMessage app for sharing
  • Widgets for quick access
  • Siri support
  • iCloud synchronization
Features
Read full description

Memento is the simple, fast reminders app for people who actually rely on their reminders. There's no clutter and no learning curve, just your reminders, showing up at the right moment. Whether it's errands, groceries, chores or everyday to-dos, Memento makes it quick to jot something down and easy to remember what matters. It works with the reminders you already have in Apple's Reminders, synced through iCloud. Everything you need, nothing you don't: • Time and location alerts that remind you at the right moment or place • Due dates that nudge you on the day, at the time you choose • Priorities you can spot at a glance • Lists with their own colors and icons • Four layouts to see your reminders your way: Minimal, Peek, List or Card • Scheduled shows what's coming up by day, week and month. Drag a reminder to reschedule it • Links keeps every saved web page in one place, with previews • Search finds any reminder by its title, notes, list or date, even with a typo • Sort by hand, date or priority, with filters throughout • Actionable notifications, so you can get things done without opening the app • Widgets, Siri and Shortcuts • Send reminders to friends in Messages • Keyboard shortcuts, dark mode and full VoiceOver support • iCloud sync across iPhone, iPad, Mac, Apple Watch and Apple Vision Pro Memento is fast, energy-efficient and private. • No tracking • No accounts required • Optional anonymous crash reports, which you can turn off in Settings. Never your reminders. Your reminders stay on your devices and sync securely through iCloud. Since 2016, Memento has been made by one independent developer who believes reminders should be calm, quick and reliable. If that sounds like you, Memento is built for you.

Screenshots

Deflection4 screens
Memento4 screens

Verdict

The call

The clearest difference is price: Deflection at $4.99 against Memento's $7.99. Deflection also leads on review sentiment (74% vs 61%) and iOS requirement (15.0 vs 26.0). Memento's advantage is chart position (#129 vs unranked) and device support (5 vs 3). On rating, ratings volume, update cadence and 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

CostPrice · In-app purchases · Ads · Monetization

Deflection costs $4.99 and Memento $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Deflection holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 115 and 313 respectively. Written reviews point the same way: 74% of Deflection's written reviews are positive against 61% of Memento's.

UpkeepUpdate frequency

Deflection ships an update every 6 weeks, Memento every 5 weeks. Both last shipped on October 29, 2026.

Scorecard6 real differences · 5 level
Deflection versus Memento: the parameters behind the verdict, then further details
ParameterDeflectionMemento
Price$4.99 — better$7.99
Rating4.6 (115 ratings) — better4.4 (313 ratings)
Positive reviews73.6% of reviews — better61.3% of reviews
Number of ratings115313 — better
Update frequencyEvery 6 weeksEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank—#129 — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch, Vision Pro — better
Requires iOS15.0 — better26.0
Further details — not scored
Size160 MB31 MB
Age rating4+4+
DeveloperBlue KetchepMark DiFranco

Customer experience

Deflection

All ratings115 ratings
Positive90.4%
Neutral4.3%
Negative5.2%
Written reviews91 reviews
Positive73.6%
Neutral8.8%
Negative17.6%

Memento

All ratings313 ratings
Positive85.0%
Neutral5.4%
Negative9.6%
Written reviews212 reviews
Positive61.3%
Neutral17.9%
Negative20.8%

Bugs and requests

Deflection

Not enough reviews yet to summarise bugs or requests.

Memento

Reported bugs

4 issues
  • Reminders not syncing across devices
  • App crashing on launch or when editing reminders
  • Location-based reminders not triggering
  • Reminders disappearing or not marking as completed

Requested features

6 requests
  • Ability to rearrange reminders within lists
  • Option to set reminders on a weekly schedule
  • Expanded widget functionality
  • Apple Watch app and complications
  • Improved sorting and filtering options
Show 1 more
  • Ability to add notes, attachments, and more details to reminders

In-app purchases

None

Deflection

No in-app purchases

None

Memento

No in-app purchases

Questions

Is Deflection free?
Deflection costs $4.99, with no in-app purchases.
Is Memento free?
Memento costs $7.99, with no in-app purchases.
Which has better reviews, Deflection or Memento?
Deflection is rated higher. Deflection averages 4.6 out of 5 from 115 ratings, while Memento averages 4.4 from 313 ratings.
Do Deflection or Memento have ads?
Neither Deflection nor Memento shows ads.
Which is updated more often, Deflection or Memento?
Deflection ships an update every 6 weeks, and Memento every 5 weeks. Most recently, Deflection was updated on October 29, 2026 and Memento on October 29, 2026.

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