Diddit vs Mark.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diddit
Create shared trackers for recurring life events with others. Easily log entries, view historical timelines, and manage household tasks, hobbies, or pet care. Your data is securely stored in iCloud with no third-party tracking.
- Create shared trackers
- One-tap logging
- Historical timelines
- Private or shared groups
- iCloud data storage
- No third-party tracking
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Keep track of the things that don't belong on a to-do list, and do it with others. Diddit allows you to create trackers, shared groups, and historical timelines for the things that recur in life. It's great for household tasks, caring for kids or pets, hobbies, and anything that requires a shared record. Your data is stored in your existing iCloud account -- there's no separate sign-up and no other server involved. There's also no third-party tracking, no analytics, and no metrics gathering. Start using Diddit immediately with no setup. It feels just like a built-in app. If you're comfortable with Reminders, you'll be right at home in Diddit. - Create groups to hold private or shared trackers - Add trackers for anything you want to keep track of - Use one-tap logging to easily add an entry to any trackers - Include a note if you need to refer back to it - View the historical timeline of each tracker, including the time elapsed between each entry - Ask Siri when you last did something, or to log a new entry in a tracker Diddit is made in New York City by an independent developer. -- Terms of Use https://didditapp.com/terms
Mark.
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Mark is a notes and lists app that looks like paper and stays out of your way. Write a note. Make a list. Everything saves as you type, so there is no save button anywhere. HIGHLIGHT ANY LINE Color a single line of a list, the way you would with a marker: the thing to buy first, the one that matters, the one that's late. Give a whole note a color too. ON THE GRID Every note sits on a printed grid of rows and columns. Lay your board out as Flow, Grid or List, whichever way you think. LISTS THAT KEEP UP Check things off and they drop to the bottom. Tuck items under others. A link shows its page's title instead of the address. FIND IT AGAIN Pin notes to the top, add labels, archive what's done and search everything. Deleted notes wait in Trash for 7 days. YOURS, EVERYWHERE Sign in with your email, no password, and your notes sync with Mark on the web at markdot.app. Mark works offline and catches up when you're back. LIGHT AND DARK Mark follows your iPhone's appearance, or pick one in Settings. PRIVATE BY DESIGN No ads and no trackers. Your notes are yours: export everything or delete your account from Settings at any time.
Screenshots
Verdict
The clearest difference is in-app purchases: Mark. at none against Diddit's 2. Mark. also leads on update cadence (daily vs monthly). On price, 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
Both are free to download. Diddit sells 2 in-app purchases, starting at $1.99 per month. Mark. asks for nothing beyond the download.
Diddit ships an update monthly, Mark. daily. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.
| Parameter | Diddit | Mark. |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 18.0 |
| Further details — not scored | ||
| Size | 18 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Christopher LoSacco | Geoform LLC |
In-app purchases
Diddit
- Diddit Plus (Monthly)$1.991 Month
- Diddit Plus$19.991 Year
Mark.
No in-app purchases









