Don't Forget vs Cronus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Don't Forget
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You start something. Something else pulls you away. An hour later you can't remember what you were doing before. Don't Forget is a task timer built for brains that switch. Instead of asking you to stop getting interrupted, it expects interruptions and keeps your place for you, so getting back takes one tap. HOW IT WORKS Start: name what you're working on and go. The timer runs and your task stays front and center. Switch: something urgent comes up? Tap Switch. Your current task is parked with its time saved, and a new one starts. Come back: a minute later, a gentle notification asks if you want to go back. Your parked task is waiting with its timer, steps and notes exactly as you left them. Resume in one tap. BREAK IT INTO STEPS Big tasks are easier to return to when you know the next step. Add steps to any task, focus on one at a time, and see how long each one really took. FOCUS THAT FOLLOWS REAL LIFE · Pomodoro sessions with focus and break lengths you choose · Pause any time, and the timer doesn't keep counting while you're gone · On Mac, tasks pause when your Mac sleeps, locks or starts the screen saver, and resume if you're back soon · A check-in when a timer has been running for hours, so forgotten timers don't skew your day · Fix the time afterwards with "stopped at" if you walked away and forgot to pause PLAN WITHOUT LOSING FOCUS Capture what's up next without breaking your current flow. Plan tasks with due dates and reminders, sort them into folders, and start the next one when you're ready. Finished something you do often? Run it again. SEE WHERE YOUR TIME WENT Honest statistics built from the time you actually focused: focus time, tasks finished, how often you were interrupted, and your sessions by day, week or month. EVERYWHERE YOU WORK · iPhone: Live Activity and Dynamic Island keep your running task visible in any app, plus Home and Lock Screen widgets to start a task · Apple Watch: see your current task and timer, tick off steps, pause, complete, or start what's next, with complications for your watch face · Mac: lives in the menu bar, with a small floating window that keeps your task in view · iPad: a two-column layout with your tasks and details side by side · Your tasks sync across your devices through your iCloud account DON'T FORGET PRO A one-time purchase, no subscription: · Focus patterns: your best hours and days, and what keeps pulling you away · Time by folder: see where your focus goes across projects · Siri & Shortcuts: start, switch and complete tasks hands-free or from automations BUILT FOR PEOPLE WHO SWITCH Many productivity apps assume you'll sit down with a list and work through it in order. Don't Forget is for people whose days don't go that way: people with ADHD, people who hyperfocus and lose track of time, and anyone whose work is full of interruptions. No streaks to break and no guilt. It remembers what you were doing so you don't have to. No account or sign-up needed.
Cronus
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Cronus is the iPhone companion to the Cronus time tracker for Mac. The Mac app watches what you actually work on and builds your day for you, with no timers to start and nothing to remember. This app puts that day in your pocket, and adds the two things a laptop cannot see: the time you spend away from it, and the time you spend on your phone. SEE WHERE YOUR TIME ACTUALLY GOES Open the app and today is already drawn: every block of work, every distraction, to scale. Pinch to zoom into a busy afternoon, swipe sideways to compare it to yesterday. No stopwatch, no tags to maintain, no timesheet to fill in on Friday. FIX A CATEGORY IN ONE TAP Cronus is context-aware rather than rule-based, because a rule cannot know that half an hour on LinkedIn was recruiting and the other half was doom scrolling. When it gets one wrong, tap the block and pick the right category. The correction stands from that day onward, and your Mac follows it. LOG THE TIME YOU WERE NOT AT A COMPUTER A conference, a coffee, a walk that turned into the best thinking of the week. Start an entry from the Track tab and stop it when you are done, or press and hold anywhere on the timeline to fill in a stretch you already spent. ADD YOUR PHONE'S DISTRACTIONS, IF YOU WANT THEM Instagram at 11pm is part of your day whether or not it happened on a laptop. Name an app, pick it once in the Screen Time picker iOS shows you, and the time you spend there lands on the same calendar as everything else. This is entirely opt-in and entirely specific: Cronus only ever sees the apps you point it at, it never gets a list of what is on your phone, and the names it stores are the names you typed. THE WEEK AT A GLANCE Seven days of bars, your categories ranked biggest first, and the apps and sites inside each one. Select a run of them and move them all to another category at once. WHAT YOU NEED Cronus for iPhone requires a Cronus account and the Cronus app for Mac, which is where the automatic tracking happens. The Mac app is free for 21 days of actual use, days you do not open it do not count, and $6 a month after that. There is no purchase inside this app. ON PRIVACY Cronus never captures, saves or transmits an image of your screen, on any platform. On the phone, the only thing measured is how long you spent in the specific apps you added yourself, and Apple's Screen Time API is built so that we cannot learn anything else: iOS hands the app an opaque token, never an app name, so what reaches our server is the label you chose and a duration. Screen Time access is optional and can be revoked in Settings at any time. Read the full policy at https://cronushq.com/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Cronus at none against Don't Forget's 1. Cronus also leads on update cadence (daily vs every 2 weeks). Don't Forget's advantage is device support (4 vs 1). On price, ads 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. Don't Forget sells 1 one-off in-app purchase. Cronus asks for nothing beyond the download.
Don't Forget ships an update every 2 weeks, Cronus daily. The most recent releases landed on November 5, 2026 and October 29, 2026 respectively.
| Parameter | Don't Forget | Cronus |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 26 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Francesco Leoni | Moritz Wallawitsch |
In-app purchases
Don't Forget
- Lifetime$19.99
Cronus
No in-app purchases









