BookKeep vs ByWhen
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
BookKeep
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If you're managing compliance deadlines for dozens of clients, you already know the risk: one missed Sales Tax filing, one late 1099, one forgotten LLC fee โ and a client has a problem you can't undo. BookKeep is built for bookkeepers who carry the compliance calendar for multiple clients and need everything organized in one place. Add each client, then attach their specific obligations: Sales Tax, Payroll, 1099s, W-2s, Estimated Tax, LLC Fees, Franchise Tax, Insurance Renewals, Property Tax, and more. Set the recurrence, due date, and reminder timing so every client deadline stays visible. BookKeep helps you see what is overdue, what is due this week, and what is coming next. Add local reminders on your iPhone or iPad so important deadlines stay front and center. When a deadline is handled, mark it complete and add notes or a confirmation number. Every completed obligation is logged, giving you a cleaner follow-through history for each client. BookKeep is local-first. Your client list and deadline tracking stay on the device where you use the app. The free plan supports up to 5 clients. BookKeep Pro unlocks unlimited clients and export tools for $5.99/month, $59.99/year, or $99 as a one-time lifetime purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bookkeep-privacy.netlify.app BookKeep is the focused compliance calendar for bookkeepers who need to know what is due, what is done, and what needs attention next.
ByWhen
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A deadline is not just a date. It is a promise your future self needs help keeping. ByWhen helps you turn important tasks into practical reminder plans. Instead of relying on one alert, ByWhen looks at what needs to be done, when it is due, how long it may take, what kind of attention it needs, and when your day has realistic space for it. Add a task, set the due date, estimate the effort, choose the task type, and ByWhen helps you stay aware of the work before it turns into last-minute pressure. ByWhen is built for: - Work projects with real due dates - Assignments, exams, and study sessions - Calls, forms, paperwork, and admin tasks - Errands that need time away from home or work - Personal tasks that are easy to postpone - Daily, weekly, monthly, yearly, and selected-day routines DEADLINE PLANS ByWhen helps you think beyond a simple due date. It considers time remaining, estimated effort, task priority, task type, and available windows in your day. A short call can fit differently than a focused work session. An errand that requires leaving home can be treated differently from a quick task you can do during a break. REMINDERS WITH CONTEXT ByWhen keeps the deadline visible as time passes. It highlights whether a task is on track, needs attention, is at risk, or has become critical. If you do not act on a reminder right away, the task remains part of your plan so you can return to it later. OPEN-TIME PLANNING With your permission, ByWhen can use calendar busy blocks to avoid suggesting times that are already occupied. You can choose what to include, ignore imported blocks, and keep control of your schedule. ROUTINE SETTINGS Set your wake time, sleep time, work hours, and workdays so reminder timing fits your real life. ByWhen can avoid unhelpful times and protect parts of the day when reminders would not make sense. TASK TYPES Different tasks need different kinds of time. ByWhen supports task types such as focused work, admin, calls, study, errands, and away-from-home tasks. This helps ByWhen suggest more realistic moments instead of treating every reminder the same way. REPEATING TASKS Create repeating tasks for daily, weekly, monthly, yearly, or selected days of the week. When you complete a repeating task, ByWhen moves the next cycle forward so you are not reminded again for the period you already finished. QUICK ACTIONS Act from a reminder when possible. Start work, be reminded later, log time, or mark the task done so your plan can stay up to date. PRIVATE BY DESIGN ByWhen is built with privacy in mind. Your tasks, schedule blocks, routine settings, and reminder plans stay on your device. No account is required to start. If you choose to export a backup, it goes to your own selected destination. BYWHEN PREMIUM Your first 7 days are ByWhen Premium. During this time, all smart planning features are available. ByWhen Premium keeps every reminder active and unlocks the full planning experience, including unlimited active reminders, deadline plans, open-time planning, task-specific reminder styles, repeating tasks, quick actions, and routine personalization. After the first 7 days, your reminders stay safe, but Premium is required to keep all smart reminders active. Download ByWhen and give your deadlines a plan you can trust. Privacy Policy: https://nionlite.com/bywhen-privacy.html Terms of Use: https://nionlite.com/bywhen-terms.html
Screenshots
Verdict
The clearest difference is in-app purchases: BookKeep at none against ByWhen's 2. BookKeep also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price and ads there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. ByWhen sells 2 in-app purchases, starting at $4.99 per month. BookKeep asks for nothing beyond the download.
| Parameter | BookKeep | ByWhen |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Every 3 days |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 15.1 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 30 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | MindSprout Studios LLC | NiONlite LLC |
In-app purchases
BookKeep
No in-app purchases
ByWhen
- Monthly Premium$4.991 Month
- Annual Premium$39.991 Year









