FlowFast vs Doubtful
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlowFast
Manage your visual workflow and tasks on the go with this mobile application. It provides a streamlined interface for organizing and tracking your projects directly from your smartphone or tablet.
- Mobile visual management
- Card management
- On-the-go project tracking
- Streamlined interface
- Task organization
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Mobile version of FlowFast visual management system – manage your cards on the go.
Doubtful
This app helps you manage your workload by focusing on a limited number of tasks at a time. It allows you to capture, organize, and break down tasks into manageable steps, with features for progress tracking and task prioritization.
- Task capture and organization
- Break down tasks into steps
- Progress tracking
- Task prioritization
- Task templates for routines
- Daily achievement badges
- iCloud task sync
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When there is a lot to do, even starting one thing can feel difficult. Doubtful helps you choose what to work on now and give everything else a place to wait. Solving holds no more than three tasks. That limit is intentional: fewer things in front of you, more room for the next step. Your tasks. Your pace. • Get it out of your head. Add tasks one at a time or as a list. Capture thoughts and to-dos in Uncontrolled, move them to Postponing, or bring them into Solving when you are ready. • Start small. Break tasks into steps, check them off, and see your progress. Finish the required steps to complete a task; optional steps can wait. • Choose what matters. Consider a task's importance and the consequences of leaving it undone. Doubtful calculates its priority and sorts the tasks on your board. • Keep familiar steps ready. Save everyday routines as templates and add them to your board whenever you need them. Try a weekly reset or a checklist for tidying your home. • Notice what you have done. See today's completed tasks and earn daily achievement badges. Each day starts a fresh count. Tasks completed on previous days move from Resolved to Trash, where you can restore them. • Pick up on another device. Use Doubtful on iPhone and iPad, with task sync through iCloud. Sync is on by default and can be turned off in Settings. It requires an internet connection and the same iCloud account on your devices. Core features work offline, with no separate Doubtful account. Choose a light or dark appearance, use English, Spanish, or Russian, and create or restore backup files. No task reminders. Come back at your own pace, and begin with one small step.
Screenshots
Verdict
The clearest difference is rating: Doubtful at 5.0 against FlowFast's 3.4. Doubtful also leads on ads (none vs shown) and monetization model (free vs ad-supported). FlowFast's advantage is ratings volume (5 vs 1) and iOS requirement (15.0 vs 17.6). On price, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
Doubtful holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: FlowFast has 5 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | FlowFast | Doubtful |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Weekly | — |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 207 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | KAITEN SOFTWARE (CYPRUS) LTD | Aleksei Melnik |
Customer experience
FlowFast
Doubtful
In-app purchases
FlowFast
No in-app purchases
Doubtful
No in-app purchases









