InkDeck vs Logarithmic Identities PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
InkDeck
Create and study with interactive flashcards using handwriting, typed text, and images. Engage with your material through five study methods and six learning games. Track your progress visually and sync across devices without an account.
- Handwritten and typed text on cards
- Spaced repetition study schedules
- Five study methods (Review, Quiz, Typing, Match, Cloze)
- Six learning games
- Import Anki decks
- Progress tracking and stats
- iCloud sync across devices
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InkDeck is the flashcard app you write by hand. Every card is a real drawing canvas — sketch diagrams, write formulas and practice characters with Apple Pencil or your finger, on iPhone, iPad and Mac. Free to start. InkDeck Pro is a one-time purchase — no subscription. STUDY FIVE WAYS • Review — flip and rate yourself; spaced repetition schedules every card at the right moment, with reminders so you never miss a session • Quiz — four-choice questions with instant feedback • Typing — type the answer; fuzzy matching forgives small typos • Match — pair terms in Quick Fire, Batch Submit or Sliding Window • Cloze — fill in the blank from context SIX GAMES MADE FROM YOUR CARDS Card Shooter, Balloon Pop, Pair Hunt, Word Forge, Deckle and Letter Trail turn any deck into a game, so review stops feeling like review. WRITE IT, DON'T JUST TYPE IT • Handwriting and typed text on the same card • Lasso to select, move and resize your ink • Images, backgrounds and color gradients • Record audio for pronunciation practice • Markdown for formatted text • Pick how your cards flip BRING YOUR DECKS Import Anki .apkg decks with their images and audio, or start from a CSV file. Ask the AI tool you already use to write cards, then paste them straight in. Share decks with the .inkdeck format. TRACK YOUR PROGRESS A calendar heatmap, review history, accuracy stats and retention curves show exactly how you're improving. Keep your study streak alive. EVERY DEVICE, NO ACCOUNT Your decks sync through iCloud across iPhone, iPad and Mac. No sign-up. Available in 11 languages: English, Spanish, French, German, Japanese, Korean, Portuguese, Russian, Turkish, Arabic and Chinese. The free plan includes 3 sets of up to 10 cards each. InkDeck Pro removes the limits with a single purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://inkdeck.gittrics.com/privacy
Logarithmic Identities PRO
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In many cases you can calculate the logarithm by transforming it and changing its shape. This app focuses on the basic operations: addition, subtraction, multiplication, division and changing the base of the logarithm. You need to enter all values and the app shows the usage of certain calculation rules of the logarithm step by step. There you see how the transformation of the logarithm may lead to an easier way of calculation but with the same results. An infographic contains all calculation rules of the logarithm. Decimals, fractions and negative values are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Contents ] - modes for logarithm (addition, subtraction, multiplication, division, change of base) - all logarithm values must be entered - results are calculated and shown in detail - the application of the transformations of the logarithm - full list of logarithm rules - history function to save the input - detailed solution - negative values, decimal numbers and fractions are supported - no ads! [ Usage ] - there are fields for entering values using a special keyboard - press the check mark button at the bottom right to start the calculation - if values are missing, the relevant field is highlighted in yellow - if the values are wrong, the affected field will be highlighted in red - the entries in the history can be deleted or sorted - if you select an entry in the history, it will be automatically loaded for the calculation - the whole history can be deleted by pressing a button - solutions can be shared - touching the question mark button displays information about the topic
Screenshots
Verdict
The clearest difference is price: InkDeck at Free against Logarithmic Identities PRO's $1.99. InkDeck also leads on update cadence (every 2 weeks vs monthly). Logarithmic Identities PRO's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement 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
InkDeck is free to download; Logarithmic Identities PRO costs $1.99 up front. InkDeck sells 2 in-app purchases, starting at $2.99 per month. Logarithmic Identities PRO asks for nothing beyond the download.
InkDeck ships an update every 2 weeks, Logarithmic Identities PRO monthly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | InkDeck | Logarithmic Identities PRO |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 182 MB |
| Age rating | 4+ | 4+ |
| Developer | Muhammad Mukhtar | Glindemann, Sennoun, Langer GbR |
In-app purchases
InkDeck
- App Access For 1 Month7 Days trial$2.991 Month
- Unlimited cards$7.99
Logarithmic Identities PRO
No in-app purchases
Questions
Is InkDeck free?
Is Logarithmic Identities PRO free?
Do InkDeck or Logarithmic Identities PRO have ads?
Which is updated more often, InkDeck or Logarithmic Identities PRO?
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