# Super Duper Age Calculator vs Librista

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.

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.

## The numbers

| Metric | Super Duper Age Calculator | Librista |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (16 ratings)](https://appshunter.io/ios/app/super-duper-age-calculator/id427263139/reviews) | **[4.8 (2.9K ratings)](https://appshunter.io/ios/app/librista/id1175532865/reviews)** |
| Number of ratings | 16 | **2.9K** |
| Positive reviews | **50.0% of reviews** | 45.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 8 MB | 67 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Super Duper Publications](https://appshunter.io/developer/427263142) | [Book Systems, Inc](https://appshunter.io/developer/535871819) |

## What reviewers say

### Super Duper Age Calculator

[App page](https://appshunter.io/ios/app/super-duper-age-calculator/id427263139)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use for standardized tests
- 👍 Calculates age in years-months-days standard
- 👍 Useful for assessment work
- 👍 Saves time
- 👍 Sleek interface

**What reviewers complain about**

- 👎 Slow swiping through dates
- 👎 Incorrect calculations (days borrowed)
- 👎 App shuts down immediately
- 👎 Steep learning curve
- 👎 Not intuitive

**Reported bugs**

- 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

**Requested features**

- 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

[App page](https://appshunter.io/ios/app/librista/id1175532865)

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.

**Highlights:** 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)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient library access
- 💡 Helpful tool for librarians
- 🤝 Friendly and resourceful staff

**What reviewers complain about**

- 🐛 Frequent loading issues
- 🔍 Difficult to switch between library accounts
- 🔍 Limited functionality after updates
- 🔍 Inconsistent user experience

**Reported bugs**

- Endless loading loops
- Disappearing reading history
- Login and account management issues
- Incompatibility with older devices

**Requested features**

- Ability to view and manage multiple library accounts
- Improved stability and reliability
- Faster loading times
- More intuitive user interface


## Frequently asked questions

### Is Super Duper Age Calculator free?

Super Duper Age Calculator is free to download, with no in-app purchases.

### Is Librista free?

Librista is free to download, with no in-app purchases.

### Which has better reviews, Super Duper Age Calculator or Librista?

Librista is rated higher. Super Duper Age Calculator averages 2.8 out of 5 from 16 ratings, while Librista averages 4.8 from 2.9K ratings.

### Do Super Duper Age Calculator or Librista have ads?

Neither Super Duper Age Calculator nor Librista shows ads.

### Which is updated more often, Super Duper Age Calculator or Librista?

Super Duper Age Calculator ships an update every 9 months, and Librista every 2 months. Most recently, Super Duper Age Calculator was updated on November 1, 2026 and Librista on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*