Comparison

Basic Calculator+ vs UltraBoard

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

Head to head
About

Basic Calculator+

Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.

Highlights
  • Basic four functions
  • Clear display
  • Large buttons
  • Portrait and landscape modes
  • iPad compatible
Features
Read full description

This simple calculator with a clear display and large buttons makes calculations easy. Portrait and landscape modes both available on iPad. This app uses the basic functions of the calculator to make the simplest, best, free calculator in the app store.

About

UltraBoard

Create and organize digital notes and boards using your Apple Pencil, stylus, or finger. Customize line color and width, and save your creations into categorized folders. This app offers a subscription for enhanced features.

Highlights
  • Digital whiteboard and blackboard
  • Apple Pencil, stylus, and finger input
  • Customizable line color and width
  • Save and categorize notes/boards
  • Folder organization
Features
Read full description

This is WhiteBoard & BlackBoard, ChalkBoard App. Please touch the screen with Apple Pencil, stylus pen or your finger. - For iPad: Apple Pencil, stylus pen and your finger - For iPhone: Stylus pen & your finger *You can change the line color with buttons and the line width with slider. *You can save and categorize(make folder for) each note/board. Auto-renewal Subscription: *UltraBoard offers an auto-renewal subscription of $8.99/month. *Payment will be charged to iTunes Account at confirmation of purchase. *Subscription automatically renews unless auto-renewal is turned off at least 24-hours before the end of the current period. *Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. *Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. *Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. *Current subscription may not be canceled during an active subscription period. *You have also cancel your subscription at following web address: https://support.apple.com/en-us/HT202039 Privacy Policy : http://www.lisfee.com/privacy-policy.html Terms and Conditions : http://www.lisfee.com/about-rule.html

Screenshots

Basic Calculator+2 screens
UltraBoard1 screens

Verdict

The call

The clearest difference is in-app purchases: Basic Calculator+ at none against UltraBoard's 1. Basic Calculator+ also leads on rating (4.9 vs 4.5) and ratings volume (243K vs 188). UltraBoard's advantage is update cadence (every 2 days vs every 4 months). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. UltraBoard sells 1 in-app purchase, starting at $8.99 per month. Basic Calculator+ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Basic Calculator+ holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Basic Calculator+ has 243K ratings behind it against 188, so its average is the more settled of the two. Written reviews point the same way: 87% of Basic Calculator+'s written reviews are positive against 80% of UltraBoard's.

UpkeepUpdate frequency

Basic Calculator+ ships an update every 4 months, UltraBoard every 2 days. The most recent releases landed on October 1, 2026 and September 16, 2026 respectively.

Scorecard5 real differences · 5 level
Basic Calculator+ versus UltraBoard: the parameters behind the verdict, then further details
ParameterBasic Calculator+UltraBoard
PriceFreeFree
Rating4.9 (243K ratings) — better4.5 (188 ratings)
Positive reviews87.5% of reviews — better80.0% of reviews
Number of ratings243K — better188
Update frequencyEvery 4 monthsEvery 2 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS10.0 — better11.0
Further details — not scored
Size44 MB73 MB
Age rating4+4+
DeveloperBest Free AppsLisfee, Inc.

Customer experience

Basic Calculator+

All ratings242,697 ratings
Positive97.6%
Neutral1.8%
Negative0.6%
Written reviews542 reviews
Positive87.5%
Neutral1.5%
Negative11.1%

UltraBoard

All ratings188 ratings
Positive87.2%
Neutral6.4%
Negative6.4%
Written reviews10 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Bugs and requests

Basic Calculator+

Reported bugs

2 issues
  • Incorrect calculation results
  • Ads covering the screen

Requested features

3 requests
  • Add fraction button
  • Implement order of operations
  • Include memory function

UltraBoard

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Basic Calculator+

No in-app purchases

1 purchases

UltraBoard

Subscriptions1
  • Gold Plan$8.991 Month

Questions

Is Basic Calculator+ free?
Basic Calculator+ is free to download, with no in-app purchases.
Is UltraBoard free?
UltraBoard is free to download, with in-app purchases available.
Which has better reviews, Basic Calculator+ or UltraBoard?
Basic Calculator+ is rated higher. Basic Calculator+ averages 4.9 out of 5 from 243K ratings, while UltraBoard averages 4.5 from 188 ratings.
Do Basic Calculator+ or UltraBoard have ads?
Both Basic Calculator+ and UltraBoard show ads.
Which is updated more often, Basic Calculator+ or UltraBoard?
Basic Calculator+ ships an update every 4 months, and UltraBoard every 2 days. Most recently, Basic Calculator+ was updated on October 1, 2026 and UltraBoard on September 16, 2026.

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