On Top To vs Backlog by Time Engine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
On Top To
This app helps you become a "list person" with a minimalist design and intuitive swipe interface for organizing and prioritizing tasks. It's designed for those who struggle with organization and procrastination, consolidating all your to-dos into a single list.
- Minimalist design
- Intuitive swipe prioritization
- Single master to-do list
- Customizable task highlighting
- Organize life and work
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Have you always wanted to be a "list person" but never been able to make the habit stick? Do existing systems for managing time and getting things done seem great, but not match the way you think and organize? Have you tried and failed repeatedly to organize life and work with planners, bullet journals, and complex workflow apps? On Top will make YOU into a "list person" with its minimalist design and intuitive swipe method for organizing and prioritizing. On Top is THE master to do list app for the messy, disorganized, and procrastinators among us. There's just one list for EVERYTHING. Move every single thing you need to do, buy, or remember from your brain into On Top. When it's time, swipe right and the tasks will go to the top (and stay at the top) where they'll be highlighted in a color of your choosing. At the grocery store? Swipe right on all the groceries. Just get to your desk for the workday? Swipe right on all the tasks you intend to tackle this day.
Backlog by Time Engine
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Backlog is a time based todo list, add an backlog, add items and subitems to it, associate it with a time amount representing a how much it will take to be done with it. Backlog adds all your items time and show how much workload you have. Simply check and uncheck items, move them to prioritize them or delete them.
Screenshots
Verdict
The clearest difference is price: Backlog by Time Engine at Free against On Top To's $1.99. Backlog by Time Engine also leads on update cadence (every 3 weeks vs every 3 months). On Top To's advantage is device support (3 vs 1). On ads, in-app purchases 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
Backlog by Time Engine is free to download; On Top To costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On Top To ships an update every 3 months, Backlog by Time Engine every 3 weeks. Both last shipped on November 3, 2026.
| Parameter | On Top To | Backlog by Time Engine |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (10 ratings) — better | — |
| Positive reviews | 92.9% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 16.4 |
| Further details — not scored | ||
| Size | 22 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Unsquander LLC | 100-8 Studio |
In-app purchases
On Top To
No in-app purchases
Backlog by Time Engine
No in-app purchases
Questions
Is On Top To free?
Is Backlog by Time Engine free?
Do On Top To or Backlog by Time Engine have ads?
Which is updated more often, On Top To or Backlog by Time Engine?
Other comparisons
