Heatmap Studio vs Doodle Schedule
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Heatmap Studio
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Heatmap Studio shows a table of numbers as a color heatmap. You can start from a blank grid, paste a table, or import a CSV or TSV file. You can edit cells and labels, choose colors, and view basic figures such as the minimum, maximum, and average. Projects are stored in the app on this device. You can export a PNG image or a CSV file. The colors are there to help you view the numbers. Please check important numbers yourself.
Doodle Schedule
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Doodle Schedule turns your calendar into a hand-drawn journal. Instead of typing plain events into boxes, draw, write and decorate your days the way you would on paper, with all the flexibility of digital. DRAW AND WRITE ON YOUR CALENDAR • Sketch, highlight and jot notes on any month or day with Apple Pencil or your finger • Add typed text in a choice of fonts, including handwritten and Chinese calligraphy styles • Separate undo and redo for drawing, photos and text A JOURNAL PAGE FOR EVERY DAY • Tap any day to open its own page • Write about your day, add photos, and resize and rotate them freely STICKERS FOR EVERY MOOD • Floral, botanical and black-and-white sticker sets • Import your own images as stickers PAPER THAT FEELS REAL • Blank, cream, grid, lined, dot-grid and more, for your month and day pages YOUR REAL SCHEDULE, TOO • See your Apple Calendar events next to your doodles • Create and edit events without leaving the app • A month widget for your Home Screen shows every event as a colour bar YOURS, PRIVATELY • Syncs across your iPhone and iPad through your own iCloud account • Lock the app with Face ID or Touch ID • No accounts, no servers, no ads. Your journal never leaves your devices and your iCloud. KEEP IT FOREVER • Export any month or day as an image • Create a PDF keepsake of your whole journal to print or archive Unlock everything with a monthly or yearly subscription, each starting with a 1-month free trial, or with a one-time purchase. Privacy Policy: https://bymilly.co/doodleschedule-privacy-policy-en/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Heatmap Studio at none against Doodle Schedule's 3. Doodle Schedule's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 12 months). On price, 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
Both are free to download. Doodle Schedule sells 3 in-app purchases, starting at $2.99 per month. Heatmap Studio asks for nothing beyond the download.
Heatmap Studio ships an update every 12 months, Doodle Schedule every 2 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Heatmap Studio | Doodle Schedule |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Japality Limited | BY MILLY CO. LTD |
In-app purchases
Heatmap Studio
No in-app purchases
Doodle Schedule
- Monthly Subscription1 Month trial$2.991 Month
- Yearly Subscription1 Month trial$14.991 Year
- Lifetime Unlock$19.99
Questions
Is Heatmap Studio free?
Is Doodle Schedule free?
Do Heatmap Studio or Doodle Schedule have ads?
Which is updated more often, Heatmap Studio or Doodle Schedule?
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