Comparison

WTR Notebook vs 11x13

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

Head to head
About

WTR Notebook

Features
Read full description

The WTR Notebook App is a writing app with a sounding keyboard. Using the app, you can listen to the letter sounds while you are writing, and hear your text being read by a speech synthesizer. You can insert images from your image library or take new pictures with your camera. Focusing mainly on kindergarten, pre-school and school, the WTR Notebook App supports multiple users, making it a perfect tool for environments where several users share the same iPad. As a teacher or a parent, you are able to create as many accounts as you wish. You can easily switch between different users. Users are only able to view their own texts. Using the WTR Notebook App, the writer will type words using the sounding keyboard. Pressing the letter key, the app will sound out the letter for the writer, in order to connect the sign of the letter to its sound. Every word is read by the speech synthesizer when the writer hits space or a punctuation mark. The writer can move back and forwards in her text and listen to the whole text at any time. This makes text development easier. The WTR Notebook App enables you to create any number of documents. This app allows you to choose between several fonts, some similar to hand-written letters. The finished text can be converted into a PDF or saved as plain text for Microsoft Word or Apple Pages. Additionally, text files can be imported from other sources such as DropBox, OneDrive, Google Drive, iCloud. The WTR Notebook App provides many possibilities for teachers and parents to adapt the contents of the app such as spell check, autocorrect, language, and speech synthesizer. The app contains no in-app purchases, rewards, music or sound effects. The sounding keyboard supports Swedish and English, whilst the sound synthesizer can be used with any language supported by Apple. This app has full support for Voice Over.

About

11x13

This app offers daily math practice to improve number familiarity and overcome math reservations. It focuses on basic arithmetic operations with visual progress tracking through charts and grids. Daily practice sessions can enhance fundamental mathematical skills.

Highlights
  • Daily math practice
  • Basic arithmetic operations
  • Progress visualization
  • Personalized calculation levels
  • Leaderboard integration
  • Number range grids
Features
Read full description

A short problem, nine answers, one correct β€” 11x13 trains mental math with no clutter and no words in the problems. THE BASIC OPERATIONS ARE FREE. NOW AND FOREVER. Addition, subtraction, multiplication and division with level bands that grow with you: from small times tables over carrying to the 11–19 tables β€” the app's namesake β€” plus chained problems like 47 + 8 + 6 at high levels. WITH β€œEVERYTHING” YOU PRACTICE EVERY OPERATION. Unlock every package permanently with a one-time purchase or for the duration of a subscription. The 14-day app trial ends automatically without starting a subscription: β€’ Percentages: from 50% of round numbers to surcharge and discount β€’ Roots: squares and cube roots β€’ Powers: up to powers of two and ten β€’ Derivatives and integrals: from monomials to binomials β€’ Geometry: symbol equations (β–² + β–² = 12), counting corners, matching shapes β€’ Fractions: adding like fractions, simplifying, unlike denominators, multiplying Your progress grows per operation, syncs via iCloud, with progress charts and a Game Center leaderboard. Easy to keep at it: a daily practice reminder at the time you choose, a Home Screen widget with the problem of the day, and statistics with streak, week-over-week comparison and band history. With a true iPad layout and hardware keyboard support (keys 1–9). Subscriptions renew automatically until cancelled in App Store subscriptions. A one-time purchase provides permanent access. Mistake notebook: The last 100 tasks you answered incorrectly are saved on this device. Review up to ten tasks without time pressure. A task leaves the notebook after a correct first answer in two separate rounds. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

WTR Notebook4 screens
11x134 screens

Verdict

The call

The clearest difference is price: 11x13 at Free against WTR Notebook's $4.99. 11x13 also leads on update cadence (every 2 weeks vs every 2 months). WTR Notebook's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 15.6). On ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

11x13 is free to download; WTR Notebook costs $4.99 up front. 11x13 sells 2 in-app purchases, starting at $0.99 per month. WTR Notebook asks for nothing beyond the download.

UpkeepUpdate frequency

WTR Notebook ships an update every 2 months, 11x13 every 2 weeks. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

Scorecard4 real differences Β· 4 level
WTR Notebook versus 11x13: the parameters behind the verdict, then further details
ParameterWTR Notebook11x13
Price$4.99Free β€” better
Positive reviewsβ€”100.0% of reviews
Update frequencyEvery 2 monthsEvery 2 weeks β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
Monetizationβ€”Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 β€” better15.6
Further details β€” not scored
Size14 MB3 MB
Age rating4+4+
DeveloperDigitalt Hjarta ABMatthias Hennemeyer

In-app purchases

None

WTR Notebook

No in-app purchases

2 purchases

11x13

Subscriptions1
  • Everything – monthly$0.991 Month
One-time1
  • Everything$5.99

Questions

Is WTR Notebook free?
WTR Notebook costs $4.99, with no in-app purchases.
Is 11x13 free?
11x13 is free to download, with in-app purchases available.
Do WTR Notebook or 11x13 have ads?
Neither WTR Notebook nor 11x13 shows ads.
Which is updated more often, WTR Notebook or 11x13?
WTR Notebook ships an update every 2 months, and 11x13 every 2 weeks. Most recently, WTR Notebook was updated on October 14, 2026 and 11x13 on October 12, 2026.

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