Comparison

Calculator for iPad + vs Sunnook

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

Head to head
About

Calculator for iPad +

This app offers a scientific calculator experience designed for iPads. It provides unlimited access to all content and features through a monthly subscription. Pricing may vary by region, and subscriptions can be managed through account settings.

Highlights
  • Scientific calculator functionality
  • Unlimited access to content
  • iPad optimized interface
  • Subscription management
  • Auto-renewing subscription option
Features
Read full description

Redefining the new generation of calculators for the iPad SUBSCRIPTION PRICING AND TERMS This calculator offers an auto-renewing subscription to provide you with unlimited access to the calculator. the price is $2.99/month for unlocking all content and features. This price is for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew 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. Read more about our terms and conditions here: Terms of service: https://weibo.com/5580956204/I55tg3VVB Privacy policy: https://weibo.com/5580956204/HB9vBf59c Email: From2019219@gmail.com

About

Sunnook

Features
Read full description

See when direct sunlight can reach the room where you live, work, or grow plants. Sunnook turns the room dimensions, windows, north, date, and location you review into an interactive clear-sky sun preview. PLAN AROUND THE SUN - Scrub through the day to see where modeled direct light can land. - Explore direct-sun opportunities across dates and seasons. - Save Sun Pins for favorite spots such as a desk, chair, or plant. - Choose optional local reminders before a modeled Sun Pin interval. BUILD A REVIEWABLE ROOM MODEL - Start immediately with Sunnook's sample room. - Draw a room from measurements on any supported device. - Use a photo as visual reference while keeping scale, windows, and north editable. - On compatible LiDAR devices, use Apple RoomPlan to scan a room, then review every dimension and opening before saving. UNLOCK SUNNOOK PRO Free access includes the sample experience and one saved room. One lifetime in-app purchase unlocks unlimited saved rooms, the annual Sun Calendar, printable Light Maps, eight-second sun time-lapse exports, and modeled Sun Pin alerts. Purchases are handled by Apple, and Restore Purchases is available for the same Apple Account. KNOW WHAT THE MODEL INCLUDES Sunnook models theoretical direct sunlight under clear-sky conditions. It does not include clouds or live weather, exterior buildings or trees, curtains, glazing loss, tint, or reflected brightness. Treat the result as a planning opportunity, not a promise that a room will be bright. PRIVATE BY DESIGN Room models, photos, measurements, scans, and sunlight calculations are stored in local app storage. City searches and place names use Apple's Maps service. Optional TelemetryDeck analytics stay off unless you choose to share them, and can be turned off again from Privacy & Analytics. No Sunnook account is required.

Screenshots

Sunnook4 screens

Verdict

The call

The clearest difference is ads: Sunnook at none against Calculator for iPad +'s shown. Sunnook also leads on update cadence (every 4 days vs every 4 weeks). Calculator for iPad +'s advantage is iOS requirement (15.0 vs 26.0). On price, in-app purchases 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. Calculator for iPad + sells 2 in-app purchases, starting at $2.99 per month and Sunnook sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Calculator for iPad + ships an update every 4 weeks, Sunnook every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Calculator for iPad + versus Sunnook: the parameters behind the verdict, then further details
ParameterCalculator for iPad +Sunnook
PriceFreeFree
Rating4.3 (3.6K ratings) — better—
Positive reviews60.5% of reviews—
Number of ratings3.6K — better—
Update frequencyEvery 4 weeksEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPadiPhone, iPad — better
Requires iOS15.0 — better26.0
Further details — not scored
Size19 MB12 MB
Age rating4+4+
DeveloperBeijing Free Calculator Technology Co., Ltd.Build with Harry

Bugs and requests

Calculator for iPad +

Reported bugs

3 issues
  • Buttons not responsive
  • History/calculation display issues
  • Conversion feature not working properly

Requested features

4 requests
  • Fraction support
  • Memory function
  • Handwriting recognition improvements
  • No ads for paid users

Sunnook

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Calculator for iPad +

Subscriptions1
  • Monthly VIP$2.991 Month
One-time1
  • Calculator permanent purchase$9.99
1 purchases

Sunnook

One-time1
  • Sunnook Pro Lifetime$4.99

Questions

Is Calculator for iPad + free?
Calculator for iPad + is free to download, with in-app purchases available.
Is Sunnook free?
Sunnook is free to download, with in-app purchases available.
Do Calculator for iPad + or Sunnook have ads?
Calculator for iPad + shows ads; Sunnook does not.
Which is updated more often, Calculator for iPad + or Sunnook?
Calculator for iPad + ships an update every 4 weeks, and Sunnook every 4 days. Most recently, Calculator for iPad + was updated on November 3, 2026 and Sunnook on October 31, 2026.

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