Super Duper Age Calculator vs Librista
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Super Duper Age Calculator
This application allows for rapid and precise calculation of chronological ages between any two dates. It provides a clear breakdown of years, months, and days, and offers convenient access to past calculations. Users can easily navigate dates and quickly return to the current day.
- Calculate chronological ages
- See years, months, and days between dates
- Recall previous calculations
- Instantly go to today's date
- Scroll through days, months, and years
- Standard date picker
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- Calculate chronological ages quickly and accurately - Easily see years, months, and/or days between any two dates - Quickly recall previous calculations from the history section - Double-tap either date or calendar to go instantly to today's date - Scroll directly through days, months, and years, or ... - Tap the cake icon or calendar icon to bring up the standard date picker Super Duper makes educational materials for kids. Learn more at http://www.SuperDuperInc.com
Librista
This app allows library patrons to access their library's online catalog, manage borrowed items, and discover new resources. Users can renew and reserve materials, create personalized book lists, and stay updated on new acquisitions. It also provides access to eBooks and information about library events.
- Search online library catalog
- Renew and reserve items
- Create personalized book lists
- View trending and new items
- Access eBooks
- Scan ISBNs to check library availability
- View account information (items out, fines)
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If your library uses Atriuum as its cataloging software, you can download Librista - the companion app for patrons. With Librista, you can search the library’s online catalog and view your items out, renew and reserve items, create book lists, and more. To begin, use the Library Locator to find your Atriuum library by location or searching. To log on, enter the same credentials you normally use to access your library’s account. Based on your library’s policies, you may be able to register for a new account. Librista features: - View trending and newly added items. - Access eBooks if your library partners with other providers. - Place holds on books, DVDs, etc. - Watch subjects, authors, or series to be notified if your library acquires new items. - Save items and categorize them in book lists, such as Favorites, To Be Read, etc. - Find out about community groups/events if your library posts this information. - View account information, including items out, fines, etc. - Set preferences for when you receive alerts (based on your library’s notification policies). - Scan ISBNs to see if your library has a specific book before you purchase it. - Switch between different catalogs if you sometimes visit other libraries in your area.
Screenshots
Verdict
The clearest difference is rating: Librista at 4.8 against Super Duper Age Calculator's 2.8. Librista also leads on ratings volume (2.9K vs 16) and update cadence (every 2 months vs every 9 months). Super Duper Age Calculator's advantage is iOS requirement (8.0 vs 16.0). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Librista holds the better App Store score, 4.8 against 2.8. That said, the two scores are not equally well evidenced: Librista has 2.9K ratings behind it against 16, so its average is the more settled of the two. Written reviews complicate that: 50% of Super Duper Age Calculator's written reviews are positive against 46% of Librista's, so the app with the better star average is not the one people write more warmly about.
Super Duper Age Calculator ships an update every 9 months, Librista every 2 months. Both last shipped on November 1, 2026.
| Parameter | Super Duper Age Calculator | Librista |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (16 ratings) | 4.8 (2.9K ratings) — better |
| Positive reviews | 50.0% of reviews — better | 45.7% of reviews |
| Number of ratings | 16 | 2.9K — better |
| Update frequency | Every 9 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 8 MB | 67 MB |
| Age rating | 4+ | 9+ |
| Developer | Super Duper Publications | Book Systems, Inc |
Customer experience
Super Duper Age Calculator
Librista
User reviews
Super Duper Age Calculator
From 16 App Store ratingsWhat we love
- 👍 Easy to use for standardized tests
- 👍 Calculates age in years-months-days standard
- 👍 Useful for assessment work
- 👍 Saves time
- 👍 Sleek interface
Room to improve
- 👎 Slow swiping through dates
- 👎 Incorrect calculations (days borrowed)
- 👎 App shuts down immediately
- 👎 Steep learning curve
- 👎 Not intuitive
Librista
From 2.9K App Store ratingsWhat we love
- 👍 Easy to use
- 🚀 Convenient library access
- 💡 Helpful tool for librarians
- 🤝 Friendly and resourceful staff
Room to improve
- 🐛 Frequent loading issues
- 🔍 Difficult to switch between library accounts
- 🔍 Limited functionality after updates
- 🔍 Inconsistent user experience
Bugs and requests
Super Duper Age Calculator
Reported bugs
10 issues- Automatic force stops occurring since IOS 12.0.1 update
- Shuts down immediately after opening
- App resets every time it is closed and reopened
- Calculates age incorrectly on days that have to be 'borrowed'
- Off by 2 days
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- When adjusting day, often causes month to change on its own
- Misalignments cause incorrect chronological age calculations
- Can't change birthday year
- Bumps you out for no reason
- Crashes multiple times
Requested features
5 requests- Highlight clicking on birthday cake and calendar icons at the beginning
- Add toggable weeks function
- Manually type in dates
- Add more features down to the hr:min:seconds
- Option for preferred layout
Librista
Reported bugs
4 issues- Endless loading loops
- Disappearing reading history
- Login and account management issues
- Incompatibility with older devices
Requested features
4 requests- Ability to view and manage multiple library accounts
- Improved stability and reliability
- Faster loading times
- More intuitive user interface
In-app purchases
Super Duper Age Calculator
No in-app purchases
Librista
No in-app purchases
Questions
Is Super Duper Age Calculator free?
Is Librista free?
Which has better reviews, Super Duper Age Calculator or Librista?
Do Super Duper Age Calculator or Librista have ads?
Which is updated more often, Super Duper Age Calculator or Librista?
Other comparisons
