Comparison

Thoughts by OPTEN vs Streak Stack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Thoughts by OPTEN

Effortlessly transform spoken thoughts into text using advanced AI. This tool ensures you never miss an idea, even when you're on the move, by converting voice notes into written messages sent directly to your email.

Highlights
  • Capture ideas quickly
  • AI voice conversion
  • Send directly to email
  • Minimize driving distractions
  • Safe and efficient idea capture
Features
Read full description

Turn your ideas into text with ChatGPT - even on the go! With our app, you can quickly and easily convert spoken messages into text and send them to your private email address. Never lose a flash of inspiration again, especially when you're on the move! Features: - Capture your ideas safely and quickly - Artificial intelligence for high accuracy voice conversion - Ease of use minimises distractions while driving - Send directly to your email address Download the app now and experience how easy it is to convert voice recordings into text – safely and efficiently, even while driving!

About

Streak Stack

Features
Read full description

Build better habits, finish important tasks, and stay consistent—all in one focused daily planner. Streak Stack combines a simple habit tracker, practical task management, flexible reminders, a calendar, and progress analytics. Use it to organize your day, turn small actions into lasting routines, and keep important commitments from slipping through the cracks. BUILD HABITS THAT LAST Create a habit in seconds, choose a goal, and check in each day. Every completion grows your streak and makes your progress easy to see. • Create personalized daily habits • Set a target and daily completion goal • Choose an icon and theme color • Add up to five reminder times per habit • Check in quickly and keep momentum growing • Review completion history and total check-ins PLAN AND COMPLETE TASKS Keep one-time work, study, health, and personal tasks beside your habits. Add the details that matter without turning your day into a complicated project. • Create tasks with a title and description • Organize tasks by category • Set high, medium, or low priority • Choose a due date and time • Mark tasks complete from your daily view • See open and completed tasks in analytics SET OFFLINE REMINDERS Schedule reminders that are stored on your device and can alert you without an internet connection. Use them for appointments, deadlines, errands, routines, or anything you cannot afford to forget. SEE YOUR DAY IN ONE PLACE Switch between streaks and tasks from one clear home screen. The calendar brings your habits, scheduled tasks, and reminders together by date, so you always know what is next. UNDERSTAND YOUR PROGRESS Use visual analytics to review weekly consistency, best streaks, check-ins, completed tasks, open tasks, and your recent activity. Clear feedback helps you adjust your routine and keep improving. PERFECT FOR • Morning and evening routines • Exercise, hydration, and mindfulness • Reading and study goals • Work tasks and personal errands • Appointments and deadlines • Focus and productivity routines • Learning new skills • Daily self-improvement WHY STREAK STACK? • Habits and tasks together • Fast, distraction-free check-ins • Multiple habit reminders • On-device offline task reminders • Categories, priorities, dates, and times • Calendar planning and progress analytics • Clean, simple, and motivating design Consistency creates change. Start with one habit, plan the next task, and build a day you can repeat. Download Streak Stack: Habit Tracker and start building better routines today.

Screenshots

Thoughts by OPTEN3 screens
Streak Stack4 screens

Verdict

The call

Thoughts by OPTEN and Streak Stack are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Thoughts by OPTEN ships an update every 9 days, Streak Stack fortnightly. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.

ScorecardNo meaningful differences
Thoughts by OPTEN versus Streak Stack: the parameters behind the verdict, then further details
ParameterThoughts by OPTENStreak Stack
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 9 days — betterFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size38 MB34 MB
Age rating4+4+
DeveloperOPTEN AGSergio Vazquez

In-app purchases

None

Thoughts by OPTEN

No in-app purchases

None

Streak Stack

No in-app purchases

Questions

Is Thoughts by OPTEN free?
Thoughts by OPTEN is free to download, with no in-app purchases.
Is Streak Stack free?
Streak Stack is free to download, with no in-app purchases.
Do Thoughts by OPTEN or Streak Stack have ads?
Neither Thoughts by OPTEN nor Streak Stack shows ads.
Which is updated more often, Thoughts by OPTEN or Streak Stack?
Thoughts by OPTEN ships an update every 9 days, and Streak Stack fortnightly. Most recently, Thoughts by OPTEN was updated on October 10, 2026 and Streak Stack on October 9, 2026.

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