InkDeck vs Simple Logarithm PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
InkDeck
Create and study flashcards with handwritten notes and drawings. Supports spaced repetition, multiple study modes, and engaging games to make learning fun. Syncs across devices via iCloud without an account.
- Handwritten notes and drawings
- Spaced repetition system
- Multiple study modes (Quiz, Typing, Match)
- Four built-in study games
- Import Anki and CSV 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
Simple Logarithm PRO
This app simplifies complex logarithm and exponentiation calculations with step-by-step solutions. It supports various input types, including decimals, fractions, and negative values, and provides a history of all calculations.
- Logarithm and exponentiation modes
- Step-by-step solution display
- Support for decimals, fractions, and negative values
- Calculation history
- Transformation between logarithm and exponentiation
- Logarithm rules infographic
- Solution sharing
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Using logarithm is a complicated task, but this app helps out! You can choose between 4 standard shapes of this topic. Then you can enter what you have to calculate what you need - base, exponent, antilogarithm, the logarithmic result, even the x-value of a term as exponent. The connection between logarithm and exponentiation is shown aswell. An infographic gives a deeper insight into some 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 - modes for exponentiation - exponent, base and some more values can be entered - results are calculated and shown in detail - transformations between logarithm and exponentiation are taken into account - shortened 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 Simple Logarithm PRO's $1.99. InkDeck also leads on update cadence (every 9 days vs monthly). Simple Logarithm PRO's advantage is in-app purchases (none vs 3). 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; Simple Logarithm PRO costs $1.99 up front. InkDeck sells 3 in-app purchases, starting at $2.99 per month. Simple Logarithm PRO asks for nothing beyond the download.
InkDeck ships an update every 9 days, Simple Logarithm PRO monthly. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.
| Parameter | InkDeck | Simple Logarithm PRO |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | Muhammad Mukhtar | Glindemann, Sennoun, Langer GbR |
Customer experience
InkDeck
Simple Logarithm PRO
In-app purchases
InkDeck
- App Access For 1 Month7 Days trial$2.991 Month
- App Access For 1 Year7 Days trial$24.991 Year
- Unlimited cards$7.99
Simple Logarithm PRO
No in-app purchases
Questions
Is InkDeck free?
Is Simple Logarithm PRO free?
Do InkDeck or Simple Logarithm PRO have ads?
Which is updated more often, InkDeck or Simple Logarithm PRO?
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